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1. plug is inserted in the Instrument Input jack Note The Pad and Polarity Inverter Phase Reverse do not apply to the Instrument Input If these functions are needed the use of an external Direct Injection DI box connected to the Microphone Input is suggested 11 The controls for the 548B Preamp section function as follows No Buttons Engaged Line Input selected MIC Selects the Microphone Preamp as the input for the channel e The MIC button must be engaged for the Instrument Input to be used e Illuminates in blue when engaged e he MIC button provides a peak Indicator by turning red whenever the peak threshold is crossed Note The signal from the Microphone Input is replaced when a 1 4 plug is inserted in the Instrument Input jack GAIN Provides up to 65dB of gain for the Microphone and 45dB for the Instrument Inputs Line Input The gain control does not affect the Line input 48V Provides 48 Volt Phantom Power to the MIC INPUT XLR connector on the rear panel e Illuminates in red when engaged PAD Inserts a 20 Pad for the Microphone or a 6dB pad for Line inputs e Illuminates when engage Inserts a Polarity Inverter Phase Reverse for the Microphone and Line inputs e Illuminates when engaged 12 2 4 Echo Auxiliary Sends The 548B Channel module provides eight fully functional echo auxiliary sends four mono Sends 1 4 and two stereo Sends 5 6 and 7 8 Accordingly the 1608 is equipped with eight
2. CONTROL ROOM CONTROL ROOM MONITOR LEVEL Controls the output level of the Monitor Control section e Volume control for the selected monitor system e The largest and most dangerous knob on the console please use it wisely 33 Monitor Source Selectors The 845B Monitor Source Selectors CR SOURCE provide a choice of nine different sources to feed the Control Room monitors The selections are divided into three categories e Program Bus PGM BUS e Echo Sends e Six Channel Playback 6 TRK PLAYBACK The 845B Monitor Source Selectors function as follows 6 LI K A Lu 6 TRK PLAYBACK 6TKAUX 6TK1 6TK2 6TK3 Routes the signal from the selected six track playback source to the Monitor Control x section 3 e The input from the selected external six track playback GTK PLAYBACK source connector on the rear panel is fed to the Monitor Control section e he selected 6 Track Playback button illuminates in red when engaged e 6 TRK PLAYBACK 6TKAUX is currently inactive and is reserved for future use ECHO SENDS 1 2 3 4 5 6 7 8 Routes the output of the selected Echo Send to the Monitor Control section e he Echo Send output is fed to the Monitor Control section ECHO SENDS e The selected Echo Send button illuminates when engaged PGM BUS Program Bus Routes the output of the Program Bus Output Masters to the Monitor Control section e he output from the Program Bus Output Masters are fed to the Monitor Cont
3. o If engaged a module mounted in the slot will process the audio before it arrives at the Echo Return module o Ifa slot is empty the signal will loop through the slot to feed the corresponding Echo Return input when a Bypass Card is inserted into the card edge connector of the corresponding slot These cards are supplied by API when the console is delivered without 500 modules in any 500 slot o The modules in the Echo Return 500 Slots may be used elsewhere by using the ECHO RETURN 500 SLOT INPUT and OUTPUT patch points on the rear panel o Inserting a plug into the ECHO RETURN 500 SLOT INPUT jack will defeat the signal from the Echo Return Input connector but the output of the slot is still sent to the Echo Return module o The Echo Return 500 Slot may be bypassed by using the Echo Return Auxiliary Input Note Please refer to section 3 3 Echo Return 500 Slots for further information Echo Returns Auxiliary Input Accepts the balanced line level input from the ECHO RETURNS AUX INPUT 1 4 connector on the rear panel The Echo Return Aux Input signal will replace the Echo Return and Echo Send MIX signals when the AUX IN button is engaged Echo Send Output Routes the output of the Echo Send section to the input of the Echo Return section The Echo Send output will replace the Echo Return signal when the MIX button is engaged The Echo Return section provides two simultaneous audio output options e Summing Buses Any of eight Summing Bus
4. 2 6 7 8 9 Connect the returns outputs from the recorder DAW or other sources to the channel Line Inputs as desired e If a DAW is used tracks could be sub grouped as needed before feeding the DAW Additional mix inputs can be created using e Echo Returns see below e Echo Send External Input see below e Program Bus Mix Inputs see below Select Line Input on the channels connected to multitrack returns the Line Input is the default channel input so no buttons need to be engaged Engage the PGM buttons to assign the channels and other inputs to the Left and Right Program Buses stereo mix buses The Summing Buses and or Echo Aux sends can be used to create the additional mix outputs needed for multichannel mixing LCRS 5 1 5 1EX 7 1 Use the onboard filter and EQ as needed e Additional signal processors such as a compressor may be patched into various places in the channel audio path via the Insert and other connections on the rear panel The contribution to the mix will be controlled by the channel Fader Mute and Pan pot The channel Echo Sends and Auxiliary Buses can be used for e Echo sends to feed effects units e Pre fader cue foldback sends for tracking overdubbing broadcasting live events e Sub group sends e Additional output paths for multichannel mixing LCRS 5 1 5 1EX 7 1 Summing Buses can also be used as e Multitrack summing e Additional post fader mono auxiliary sends e Audio sub
5. SUB 1 8 can also be routed to the Program Bus via individual Left and Right assignment buttons The controls for each 168B Summing Bus Sub master SUB 1 8 function as follows L and R PGM ASSIGN Individual assignment of the Summing Bus ACA output to the Left and Right Program Buses e The Left and Right Program Bus Assignment switches are actually fed from the PGM BUS MIX INPUT jacks on the rear L amp panel o These jacks are normalled to the output of the Summing Buses ACA but break that connection when PGM ASSIGN e a jack is inserted o The normal or inserted signal present at the PGM BUS MIX INPUT jack feeds the Left and Right Program PGM Bus Assignment switches e SUB 8 e e Illuminates when engaged NOTE Sub masters assigned to the Program Bus will mute if the console is in Solo In Place and a channel or Echo Return is soloed SOLO Activates the PFL or AFL Solo function e Illuminates when engaged ON On off switch for the Summing Bus Sub master SUB 1 8 e Illuminates in when engaged e Provides max kill in off position with TRIM fully clockwise this is the calibrated position of the Send TRIM Serves as a OdB to 84dB trim control for the Bus Out application or OdB to 30dB trim control for Return to Program Bus e Cut only calibrate level to infinite cut CAL trim pot The trim pot calibrates the output of the Active Combining Amplifier 168B Connections The rear panel connections for
6. Summing Bus Master Quitputs 1 4 Left and Right Mix Inputs DAW Audio Center Sub Interfaces Ls Rs Mix Inputs 56 10 3 Basic Record and Mix Connections The diagram below shows the connections between a 1608 and a DAW or other multitrack recorded for both recording and mixing without changing connections on the rear panel For recording select the Mic or Instrument input on the 1608 channels and output to the DAW via the Channel Direct Output or Summing Bus assignments The Echo Returns can be used as addition input channels as needed feeding the DAW via assignments to the Summing Buses During recording a stereo mix can be created in the DAW and monitored as described in the Multitrack Recording scenarios above For mixing select the Line input on the channels and assign them to the Program Bus for stereo mixing and the Program Bus and or Summing Buses for surround mixing The Echo Returns can be assigned accordingly and used to return additional channels from the DAW or returns from outboard effects processors Channel Line Inputs 1 16 e Channel Direct TT l Outputs 1 16 PUT LIL ECHO RETURNS AUX INPUT DIRECT OUTPUT PGM BUS MIX INPUT 0000 0000 O JO ererere y r Line Input Line Output LL 0 0 Audio BUS OUTPUT 1 8 Interfaces Line Input Line Qutput 9 JO 17 24 17 24 ACA DUTPUT Summing Bus Outputs 1 8 Echo Return Inputs 1 8 DAW Hybrid It is possible to u
7. The mix of the multitrack returns could be routed back to the console via channels echo returns an external control room monitor input or even the Program Bus insert return for further processing routing and or monitoring Mixing Scenarios The diagram below shows the connections between a Digital Audio Workstation DAW with 24 line outputs and a 1608 for stereo or surround mixing The first 16 channels are fed from the DAW outputs 1 16 via the Channel Line Inputs DAW outputs 17 24 are fed to the 1608 Echo Return Inputs 1 8 Channel Line Inputs 1 16 e ECHO RETURNS AUX INPUT o e P B Line Qut O G i O DAW 1 16 Audio INPUT 1 8 Interfaces Line Qut O 17 24 Echo Return Inputs 1 8 Select the Line input on channels For stereo mixing make assignments to the Program Bus For surround mixing use Program and Summing Bus 1 4 assignments to create six mix paths for 5 1 mixing as follows Left Program Bus Left Right Program Bus Right Center Summing Bus 1 Sub LFE Summing Bus 2 Left Surround Summing Bus 3 Right Surround Summing Bus 4 Make Program and Summing Bus assignments as need to route the channels to the appropriate mix bus es Turn ON Aux Sends 7 and 8 and engage the TO BUS button This will allow Aux Sends 7 and 8 to act as level mute and pan controls for contributions to the mix via Summing Buses 1 4 54 Center Sub Ls Rs When the PRE button is engaged Aux Sends 7 and 8 are fed pre fade
8. This page left blank 1 0 Overview Gems m anil L J C i L i ii mn mn aw Building on API s rich heritage of extremely high quality recording consoles we are proud to introduce the new Model 1608 a full featured small format recording console based on the vintage API 1604 console which has held its demand and value for over three decades The 1608 gives all of the advantages of the 1604 Vintage Consoles while adding new modern features valuable to today s Engineers Producers and Musicians Features e 16 Input Channels each with Mic Pre and Equalizer Accepts up to eight API 500 Series Modules 8 Main Buses 8 Auxiliary Buses 1 Stereo Bus 8 Echo Returns with main and stereo bus assign Full Center Section Control Analog Metering 5 1 Center Section Monitoring Comprehensive Rear Patch Connections The 1608 is built to the same exacting API build standards as our Vision consoles Legacy consoles and modular products The standard fit of a 1608 Console is 16 548B Inputs with Mic Line and Direct Output 12 550A Equalizers 4 560 Equalizers 8 Echo Returns 1 Complete Central Facilities Section 16 Manual Faders 1 Stereo Fader This page left blank 2 0 548B Channel Module The 548B Channel module provides a single audio path for bringing signals into the console for mixing and or routing to external destinations Together with the 440B Fader it provides a comprehensive audio path for a variety of application
9. equipment pre Program Fader The controls for the 268B Left and Right Program Bus Output Masters PGM L and PGM R function as follows ACA CAL trim pot The trim pot calibrates the output of the Active Combining Amplifier BSTR CAL trim pot The trim pot calibrates the output booster TRIM Controls the output level of the Program Bus ACA e 5 5bB to 1 5dB ON On off switch for the Program Bus Output Master PRG INS Program Insert Activates the Left and Right Program Insert Return e he Program Insert Send is fed pre fader from the output of the Program ACA The Program Insert Send is always active The Program Insert Send is a balanced line level signal routed to the PROGRAM BUS INSERT SEND ACA OUTPUT 1 4 tip ring sleeve jack on the rear panel e he Program Insert Return accepts a balanced line level signal from the PROGRAM BUS INSERT RETURN FADER INPUT 1 4 tip ring sleeve jack on the rear panel e he Program Insert Return is located post ACA and pre fader e The Program Insert Return is active only when the INS button is engaged 29 5 2 5 3 440B Stereo Master Fader Module The 440B Stereo Master Fader feeds the Left and Right Program Outputs of the console It is the main stereo output and provides the Left and Right outputs for 5 1 mixing e At OVU the fader is at unity gain Monitor Output Controls The 268B Monitor Output section supports one set of main 5 1 monitors and two sets of st
10. 24 Output JACA OUTPUT Summing Bus Outputs 1 8 NOTE This scenario requires the use of a pair of Summing Bus Masters to return the stereo mix to the Program Bus If used for this purpose the selected Summing Buses cannot be used as multitrack sends 51 Multitrack Recording Scenario 2 The diagram below shows the connections as above except the mix return from the DAW is routed directly to the 845B Control Room Monitor module for monitoring In this scenario the Program Bus Inserts and Master Fader are bypassed This scenario requires the engineer to sum the recorded channels to a stereo or 5 1 mix within the DAW and output this mix for monitoring via the 845B Control Room Monitor module Channel Direct Outputs 1 16 If DIRECT 2 OUTPUT G TRACK PLAYBACK a r FIGHT PGM BUS MIX INPUT e jp l 1 d O O O O 6 TRACK PLAVEACK 2 O O 7 m e DAW Audio Interfaces b TRACK PLAYBACK 3 BUS OUTPUT 1 8 Line Input Mix O O O JO 17 24 Line Outputs ACA DUTFUT Summing Bus Outputs 1 8 52 10 2 Multichannel Mixing This setup uses the 1608 as a return path and mixer from a multitrack recorder DAW stage or other sources It can be used while tracking overdubbing and mixing If used during tracking or overdubbing the input to the recorder or DAW might be fed by unused 1608 channels echo returns or an audio path that s external to the console 1 2 3 4
11. WARNING WARNING WARNING WARNING WARNING The use of NON VPR Alliance approved 500 series modules in the 1608 is vehemently discouraged and may cause operational difficulties with the console Improper operation excessive current draw and poor module fit are all potential issues with these devices For the most recent list of VPR Alliance approved modules please visit www apiaudio com API reserves the right to deny warranty claims when non VPR Alliance 500 series modules are used 17 2 7 548B Connections The rear panel connections for the 548B Channel module are as follows INSERT RETURN FADER INPUT INSERT SEND EQUALIZER OUT EQUALIZER INPUT PREAMP OUTPUT INSTRUMENT INPUT DIRECT OUTPUT e Balanced Line level e Male XLR INSERT RETURN FADER INPUT e Balanced Line level e 1 4 tip ring sleeve switching jack e Replaces the EQ Out signal when a jack is inserted and the INS button is engaged INSERT SEND EQUALIZER OUT e Balanced Line level e 1 4 tip ring sleeve switching jack e The feed to the Insert Return Fader Input is defeated when a jack is inserted EQUALIZER INPUT e Balanced Line level e 1 A tip ring sleeve switching jack e The Preamp Output signal is replaced with this signal when a jack is inserted PREAMP OUTPUT e Balanced Line level e 1 4 tip ring sleeve jack e Half normalled to feed the Equalizer Input INSTRUMENT INPUT e Unbalanced High impedance
12. and LFE channels is suggested Make sure the PRE buttons are not engaged if you want the send to follow the Fader Turn the selected channel Aux Sends ON and set the levels to unity gain or as needed Use the channel fader to adjust the contribution to the assigned 5 1 mix channels Turn ON the selected Echo Send modules Set the Echo Send level to unity gain The Echo Send module is fed by the corresponding Auxiliary Bus The L R mix outputs are fed to the L R Program Output connectors The Ls Rs C and LFE mix outputs are fed to the Echo Sends Output connector Use addition Aux Sends if additional mix outputs are needed 58 10 5 E1608 Echo Return Applications Echo Return Mix Input Connect the output of the desired device effects unit recorder DAW etc to the Echo Return Input or Echo Return Auxiliary Input Engage the AUX IN button if desired Assign to the Program Bus Engage PAN button to engage the Pan pot if needed Set the level and pan as desired Tracking Input Connect the output of an external preamp or other line level device to the Echo Return Input or Echo Return Auxiliary Input o If an API 512C Preamp is mounted in the corresponding Echo Return 500 Slot it can be used as a microphone or instrument preamp Engage the AUX IN button if desired Assign to the desired Summing Bus es Engage PAN button to engage the Pan pot if Odd Even panning is needed The Echo Return level will control the output to the Summing Bus The Summin
13. and Sub masters can also be used as additional Left and Right mix outputs 60 10 7 Echo Return 500 Slot Applications The console is equipped with eight Echo Return 500 Slots These 500 Slots are built to power and interface any API 500 Series module e 512C Preamplifier 525 Compressor 550A 3 Band EQ 550B 4 Band EQ 560 Graphic EQ Some possible applications of the 500 Slots include Extra microphone instrument inputs when equipped with a 512C Preamp Extra signal processing for the Echo Return inputs Patchable signal processing for use in the channel Inserts and patch points Patchable signal processing for use in the Program Bus Inserts Patchable signal processing for use anywhere else internally externally etc When equipped with a 512C Preamp the 500 Slot and Echo Return combine to form a powerful input module capable of routing a microphone instrument or line input to the Program and or Summing Buses with full assignment panning and solo functions This can greatly expand the capabilities of the console for almost all applications When equipped with a 512C Preamp an API EQ and a 525 Compressor three 500 Slots can be used to create a single high quality signal path for direct feed to the multitrack recorder or DAW As indicated by these examples the 500 Slots can be custom configured to add versatility and maximize performance The features of the 500 Slots are as follows e All eight 500 Slots are empty in the
14. create the needed mixes 10 If a stereo mix is created in the DAW it could be routed back to the console via unused channels echo returns an external control room monitor input or even the Program Bus insert return for further processing routing and or monitoring 50 Multitrack Recording Scenario 1 The diagram below shows the connections between a 1608 and a Digital Audio Workstation DAW with 24 line inputs The first 16 channels feed the DAW inputs 1 16 via the Channel Direct Outputs DAW inputs 17 24 are fed from the 1608 Summing Bus Outputs 1 8 providing versatile assignment possibilities If the Echo Return 500 slots are fitted with 512C Preamplifiers or outboard preamps are fed to the Echo Return inputs the 1608 can provide 24 independent input channels and output paths to a DAW or other multitrack recorder This scenario requires the engineer to sum the recorded channels to a mix within the DAW and output this mix for monitoring The diagram below this mix returns to the Program Bus Mix Inputs The signal from these jacks is routed to the 1608 Program Bus by assigning the corresponding Summing Bus Masters to the Left and Right Program Bus on the 168B module This allows the DAW mix to feed the Program Bus Inserts and Master Fader Channel Direct Outputs 1 16 Ix DIRECT e F PGM BUS MIX INPUT l J a p p i P Line Input DAW erelere C audio Interfaces BUS OUTPUT 1 8 Line Input Mix Line 9 J9 17
15. devices For the most recent list of VPR Alliance approved modules please visit www apiaudio com API reserves the right to deny warranty claims when non VPR Alliance 500 series modules are used 61 10 8 Rear Panel DB25 Wiring Diagrams The Rear panel DB25 connectors of the 1608 are wired as follows SUR RIGHT SUR LEFT CENTER LEFT gt RIGHT Gi eo I T E I A I GCH G 6 TRACK PLAYBACK 1 T o L Y LL Y qj Co2ecbu L ESAL LI c D dg i ee ic OD jeune b oem G CH Tu m m m 6 TRACK PLAYBACK 2 T me L LLI X qj mAT Ei Ll QAI wW a2sg Lu on Man vas sen GCH aen SCH wen V zi i LET 6 TRACK PLAYBACK 3 jt ss ss ee S BUS OUTPUTS ECHO SEND OUTPUTS GCH GC6H GCcH GCH GCH lecn ecH GCH ur ECHO RETURN INPUTS 62 API 1608 Limited Warranty Warranty Information This product carries a one year labor and a five year parts warranty from date of purchase API Automated Processes Incorporated does not cover claims for damage due to alteration and or abuse This warranty is limited to failures during normal use which are due to defects in material or workmanship If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period API at its option will repair or replace the product PLEASE NOTE The design or q
16. e Instrument level e 1 4 tip sleeve switching jack e The Microphone Input signal is replaced with this signal when a jack is inserted MIC INPUT e Balanced Low impedance e Microphone level e Female XLR connector LINE INPUT e Balanced Low impedance e Line level e Female XLR connector 18 3 0 EI608 Echo Send Return Module CHO RETURN P G M HE mph EXC v U R 3 T T i B E X T N ZM p iMmnCE The E1608 Echo Send Return module serves multiple functions and contributes greatly to the extensive flexibility of the 1608 Some possible applications of the Echo Send return module include Echo returns from reverbs and effect units Additional line level inputs during tracking or mixing Audio sub grouping Echo send masters Cue and foldback send masters Mix minus matrixes Parallel processing The E1608 Echo Send Return module has two primary sections e Echo Send e Echo Return 19 3 1 Echo Send Section ECHO SEND e The Echo Send section has the following features e Flexible input sources including a combined external input On off switch Level control Solo AFL only Talkback insertion for cue foldback sends headphone sends Routing to the Echo Return section Balanced line level output at the ECHO SENDS OUTPUT 1 8 sub D connector The E1608 ECHO SEND section primarily functions as an echo send master It can also provide grouping functions when used with the echo se
17. groups sends e Additional mix outputs e Additional output paths for multichannel mixing LCRS 5 1 5 1EX 7 1 10 Summing Buses Output Sub masters can be used as e Multitrack output masters Additional post fader mono auxiliary send masters Audio sub groups masters Additional mix inputs Additional mix output masters e Output masters for multichannel mixing LCRS 5 1 5 1EX 7 1 11 Echo Send modules can be used as e Echo Auxiliary Bus Masters for feeds to effects units and cue foldback systems e Additional mix inputs e Sub group masters e Additional output paths for multichannel mixing LCRS 5 1 5 1EX 7 1 12 Echo Returns can be used as e Echo Returns for effects units and other devices e Additional mix inputs e Input channels for tracking and overdubbing e Sub group mix returns 13 Unused channels can be used as e Additional mix inputs e Input channels for tracking and overdubbing e Echo Returns for effects units and other devices e Sub group returns patching required 14 The Program Bus Inserts can be used for additional processing of the Left and Right mix such as equalization and or compression 15 The contribution to Left and Right Program outputs will be controlled by the channel Left and Right Program Output Masters PGM L and R and the Stereo Master Fader 16 Connect the Left and Right Program outputs and other outputs if multichannel mixing to the mix recorder inputs 53 17
18. module the PAN button must be engaged to enable Left Right Program Bus panning PGM Program Assigns the Echo Return output to the Program Bus e The Program Bus is fed post the Echo Return pan pot e Illuminates when engaged SOLO Activates the selected solo function for that Echo Return e The following solo functions may be selected via the 845B Central Facilities Module o Solo PFL Non destructive mono pre fader listen PFL This is the default solo mode o After Fader Listen AFL Non destructive mono after fader listen o Solo In Place SIP Destructive panned after fader listen e Illuminates in yellow when engaged NOTE PFL is the default solo mode NOTE Channels and Echo Returns must be assigned to the Program Bus for Solo In Place for their mutes to activate when other channels or Echo Returns are soloed SAFE Activates the Solo Safe mode for that Echo Return e The SAFE button protects that Echo Return from being muted when the Solo In Place function is active and another channel or Echo Return is soloed e Illuminates when engaged MUTE Cuts the audio output from that Echo Return e he MUTE button is the on off switch for the Echo Return output and is located post level control in the signal flow e he MUTE button is the button with an E and a number 1 8 located in the Echo Return section e Illuminates in red when engaged 23 3 3 AUX IN Selects the Echo Return Auxiliary Input as the input for the Ec
19. or Summing Buses This is done by engaging the MIX button in the Echo Return section This can be very useful for creating sub groups mix minus cue feeds and other applications The output of the Echo Send is also fed to its corresponding meter in the Meter Bridge E1 E8 The output of the Echo Return section can be sent to the meter instead by engaging the VU RET button 20 3 2 The controls for E1608 Echo Send section function as follows v e AFL Activates an AFL solo ECHO SEND e Illuminates when engaged e ON On off switch for the Echo Send y e Illuminates in green when engaged LEVEL Controls the output level of the Echo Send VU RET Return Routes the output of the Echo Return section to the meter in place of the output from the Echo Send e Illuminates when engaged T B Talkback Allows the Talkback microphone to feed the Echo Send when the Talkback microphone is activated e I lluminates in blue when engaged EXT IN External Mixes the ECHO SEND EXTERNAL INPUT from the rear panel with the output from the corresponding auxiliary bus at the input of the Echo Send e Illuminates when engaged NOTE There are two trim pots on the odd number Echo Send Return sections These are not labeled but trim the calibration for respective Echo Sends Echo Return Section The E1608 ECHO RETURN section is an independent audio channel with multiple input options complete level muting and panning control
20. or unused input patching required Echo Send Master Use channel assignment buttons to feed the post fader signal to the desired Summing Bus es e Turn ON the corresponding Summing Bus Sub master e Set the level to unity gain e The Sub master output is fed by the corresponding Bus Output connector e Connect the Bus Output to the input of the device to be used Mix Input Connect the output of the desired device effects unit recorder DAW etc to the Program Bus Mix Input This input feeds the input to the Program Bus Assignment switches on the Summing Bus Sub masters 1 8 Turn the corresponding Sub master ON Assign to the Program Bus Use the TRIM control to set the desired level Summing Bus Multichannel Mix Outputs LCRS 5 1 5 1EX 7 1 Use the Program Bus for the Left and Right channels Select four Summing Buses for use as Center Left Surround Right Surround and LFE channels and make the appropriate assignments o The Pan pot may be engaged for Left and Right Surround panning Use the channel fader to adjust the contribution to the assigned 5 1 mix channels Turn ON the selected Summing Bus Sub masters SUM 1 8 Set the levels to unity gain The Summing Bus Sub masters are fed by the corresponding Summing Buses The L R mix outputs are fed to the L R Program Output connectors The Ls Rs C and LFE mix outputs are fed to the Buss Output connector Use addition Summing Buses if additional mix outputs are needed The Summing Buses
21. the 168B Summing Bus Sub master module are as follows PGM BUS MIX INPUT am y PGM BUS MIX INPUT e Balanced Line level e 1 A tip ring sleeve jack e Replaces the Summing Bus output signal at the Left and Right Program Assignment switches when a jack is inserted O TO e Balanced Line level wo e Female 25 Pin Sub D connector BUS OUTPUT 1 8 ACA OUTPUT ACA OUTPUT 21 5 0 268B Program Bus Output Masters and Monitor Output Module The 268B Program Bus Output Masters and Monitor Output module provides three functions e Program Bus Output controls e Monitor Output controls e Program Insert Control 28 5 1 Program Bus Output Masters Together with the 440B Stereo Master Fader the Program Bus Output Master section of the 268B provides a fully featured stereo master channel Features of this master channel include e On off switch Trim control ACA calibration Output Booster calibration Switchable balanced insert Balanced line level outputs The Program Bus Insert Send ACA jacks are the pre fader Outputs of the Program Summing Buses They normally feed the top of the fader and are half normalled to the Program Bus Insert Return jacks The Program Insert jacks feed the Master Fader and Program Bus Outputs by engaging the Program Bus Insert switch The Program Summing Bus outputs will feed the Program Master fader unless the Program Insert button is engaged This allows insertion of external processing
22. the Preamp The MIC button serves as the Peak Indicator and turns red when peaks cross the threshold set on the 840B Central Facilities Module Note The Peak Indication LED functions in MIC LINE or INSTRUMENT mode Line Input Accepts balanced low impedance line level signals from the LINE INPUT connector The Line Input has the following features e 6 dB Pad e Peak Indicator e Polarity Inverter phase reverse Note Line Input is the default channel input Microphone Input Accepts balanced low impedance microphone level signals from the MIC INPUT connector It s the classic API 212L microphone preamplifier with the following features e 65dB of gain 20 dB Pad Peak Indicator Polarity Inverter phase reverse 48v Phantom Power Note The MIC button must be engaged to use this input Note The signal from the Microphone Input is replaced with the signal from the Instrument Input when a 1 4 plug is inserted in the Instrument Input jack Instrument Input Accepts unbalanced high impedance instrument level signals from the 1 4 INSTRUMENT INPUT connector The Instrument Input reduces the need for separate Direct Injection DI boxes and has the following features e 45dB of gain e Peak Indicator Note The MIC button must be engaged to use this input Note The Instrument Input jack is a switching jack The signal from the Microphone Input is replaced with the signal from the Instrument Input whenever a 1 4
23. to the left of the E5 and E meters Talkback Microphone The built in Talkback Microphone is located below the Power Supply Voltage Indicators 43 9 0 Rear Panel 9 1 548B Channel Module Connections The rear panel connections for the 548B Channel module are as follows DIRECT OUTPUT INSERT RETURN FADER INPUT INSERT SEND EQUALIZER OUT EQUALIZER INPUT PREAMP OUTPUT INSTRUMENT INPUT DIRECT OUTPUT e Balanced Line level e Male XLR INSERT RETURN FADER INPUT e Balanced Line level e 1 4 tip ring sleeve switching jack e Replaces the EQ Out signal when a jack is inserted and the INS button is engaged INSERT SEND EQUALIZER OUT e Balanced Line level e 1 4 tip ring sleeve switching jack e The feed to the Insert Return Fader Input is defeated when a jack is inserted EQUALIZER INPUT e Balanced Line level e 1 4 tip ring sleeve switching jack e The Preamp Output signal is replaced with this signal when a jack is inserted PREAMP OUTPUT e Balanced Line level e 1 A tip ring sleeve jack e Half normalled to feed the Equalizer Input INSTRUMENT INPUT e Unbalanced High impedance e Instrument level e 1 4 tip sleeve switching jack e The Microphone Input signal is replaced with this signal when a jack is inserted MIC INPUT e Balanced Low impedance e Microphone level e Female XLR connector LINE INPUT e Balanced Low impedance e Line level e Femal
24. 25 Pin Sub D connector ECHO RETURNS AUX INPUT 1 8 e Balanced Line level e 1 4 tip ring sleeve jack ECHO RETURNS INPUT 1 8 e Balanced Line level e Female 25 Pin Sub D connector ECHO RETURNS 500 SLOTS IN 1 8 e Balanced Line level e 1 4 tip ring sleeve switching jack e The signal from the Reverb Return Input connector is replaced with this signal when a jack is inserted ECHO RETURNS 500 SLOTS OUT 1 8 e Balanced Line level e 1 4 tip ring sleeve jack e Also normalled to feed the Echo Return module input 25 4 0 168B Summing Bus Sub master Module The 168B Summing Bus Sub master Module provides control and routing for the eight Summing Buses also known as Active Combining Amplifiers ACA The following is provided for each Summing Bus ACA On off switch Solo PFL and AFL only Trim control ACA calibration Individual Left and Right Program Bus assignments Balanced line level outputs z zo Oro LII Em e o o oe eo E z un c zo 3 04 E zo 3 04 23 04 o N e zo 3 24 amp LI RE zo 3 0 4 oron zum i c z O 3 e LI EE Oro zo LA i77 26 4 1 4 2 Summing Bus Sub masters The Summing Bus Sub masters labeled SUB 1 8 are the final stage before the Summing Bus outputs are fed to the BUS OUTPUT 1 8 ACA OUTPUT sub D connector on the rear panel The output of the Summing Bus Sub masters
25. API Model 1608 Recording Console Operator s Manual 8 i t g C Et 1 K gt r AF d s PAT T J Z oi SS jj i i l i 2 m 1 A E EP EE PMR 10 11 Important Safety Instructions Please read these instructions Keep this Manual in a safe place Do not use this console near water Clean only with a dry cloth Do not block any ventilation openings Do not install near any heat sources such as radiators heat registers stoves or other devices including the power supply that produce heat Do not defeat the safety purpose of the polarized or grounding type AC plug Protect both the AC power cord to the power supply and the DC cable between the supply and the console from being walked on or pinched Use only attachments accessories specified by the manufacturer Unplug this device during lightning storms or when unused for long periods of time Refer all service to qualified personnel ATTENTION Exposure to extremely high noise levels may cause permanent hearing loss or damage Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise or even music for a period of time Be safe WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture This page left blank Introduction Than
26. Direct Output meter feeds for Meters 1 8 Meters 9 16 will display the channel Preamp output Meters 9 16 will display the channel Direct Output if the DIR OUT button is engaged Illuminates in when engaged 39 7 7 7 8 Peak Threshold The 840B Peak Threshold section allows the selection of one of six Peak Thresholds When the signal in a channel crosses the selected threshold the MIC button on that channel turns red indicating a peak has been reached There is also a selector position and trim pot for Peak Indicator calibration The 840B Peak Threshold controls function as follows Peak Threshold Selector Selects the Peak Indicators threshold from the following choices e 4dBU 8dBU 12dBU 16dBU 20dBU 24dBU CAL CAL trim pot Calibrates the Peak Indicator e CAL must be selected on the Peak Threshold selector PEAK THRESHOLD Oscillator The 840B Oscillator section provides a full range sine wave oscillator with the following features e Twelve frequency selections from 20Hz to 20kHz On off switch Level control Assignment to the Program and Summing Buses Balanced line level output The 840B Oscillator controls function as follows Frequency Selector Selects the Oscillator frequency from the following choices e 20Hz 50Hz 100Hz 300Hz 500Hz 1kHz 2kHz 3kHz 5kHz 8kHz 10kHz 20 kHz o OSCILLATOR LEVEL Controls the output level of the Oscillator ON On off switch for the Osci
27. PFL and AFL solos No Buttons Engaged PFL is the active solo function SIP Solo In Place Selects the Solo In Place solo function e Illuminates when engaged AFL After Fader Listen Selects the After Fader Listen solo function e I luminates when engaged CLEAR Disengages all engaged channel echo return SOLO buttons e Provides a quick and easy method to turn off channel echo return solos e Does not clear Echo Send or Summing Bus Master solos e Momentary switch e lluminates as a flashing light when any solo mode is engaged Note If Solo Clear is pushed and the button remains flashing there is either an Echo Send or a Summing Bus Master solo latched Channel Meter Control The 840B Channel Meter section selects the source for the sixteen Channel Meters in the Meter Bridge All sixteen Channel Meters can display the following sources e Channel Preamp output e Channel Direct Output The first eight Channel Meters can also display e Summing Bus masters SUB 1 8 output The 840B Channel Meter controls function as follows S No Buttons Engaged Meters display the output of the channel Preamps o gt DIR OUT Direct Output Meters display the output of the channel R Direct Output e Replaces the channel Preamp output meter feed e Illuminates in when enaaaed CHANNEL METERS SUB MSTR Sub master Meters 1 8 display the output of the Summing Bus Sub masters SUB 1 8 Replaces the channel Preamp output and
28. UP button is engaged e Illuminates in red when engaged A U X P R i M T F AUX PRE MTE Auxiliary Pre Mute Causes Channel Echo Sends in pre Fader mode to follow the Channel Mute Solo Master The 840B Solo Master section selects the solo function for the Channels and Echo Returns The following solo functions are provided e Pre fader Listen PFL e After fader Listen AFL e Solo In Place SIP Pre fader Listen PFL e The Solo Bus is fed pre fader from the channel or echo return e Non destructive e Mono e Solo Level Control After fader Listen AFL e The Solo Bus is fed post fader from the channel or echo return e Non destructive e Mono e Solo Level Control Solo In Place SIP e Destructive all other channels returns will mute when the SOLO button is engaged in this mode e The soloed channels returns are monitored via the Program Bus e Panned e Post fader NOTE PFL is the default solo mode 38 7 6 NOTE Channels and Echo Returns must be assigned to the Program Bus for Solo In Place for their mutes to activate when other channels or Echo Returns are soloed NOTE Sub masters assigned to the Program Bus will mute if the console is in Solo In Place and a channel or Echo Return is soloed The 840B Solo Master controls function as follows SOLO SUM L and R CAL trim pot Calibrates the level of the Left and Right channel contributions to the PFL and AFL solo bus LEVEL Volume control for
29. balanced Auxiliary Buses and outputs e Each mono Echo Auxiliary Send has an individual level control and an on off switch e Each stereo Echo Auxiliary Send has a stereo level control a pan pot and an on off switch e Sends 7 and 8 can be routed to feed the 1 4 Summing Buses only in addition to their Auxiliary Buses 1 and 2 Level Individual level controls for Sends 1 and 2 1 2 PRE Routes the pre fader signal to Sends 1 and 2 e Sends 1 and 2 are fed post fader when the PRE button is not engaged e Illuminates when engaged 1 and 2 buttons Individual on off switches for Sends 1 and 2 e Illuminates when engaged 3 4 Level Individual level controls for Sends 3 and 4 3 4 PRE Routes the pre fader signal to Sends 3 and 4 e Sends 3 and 4 are fed post fader when the PRE button is not engaged e Illuminates when engaged 3 and 4 buttons Individual on off switches for Sends 3 and 4 e Illuminates when engaged The controls for the 548B stereo Echo Auxiliary Sends 5 6 and 7 8 function as follows 5 6 LVL Stereo level control for Sends 5 and 6 5 6 PAN Pan pot for Sends 5 and 6 5 6 PRE Routes the pre fader signal to Sends 5 and 6 e Sends 5 and 6 are fed post fader when the PRE button is not engaged e Illuminates when engaged 5 6 button On off switch for Sends 5 and 6 e Illuminates when engaged 7 8 LVL Stereo level control for Sends 7 and 8 7 8 PAN Pan pot for Sends 7 and 8 7 8 PRE Routes the pre fader signal to Se
30. bligation
31. control Monitor cut Control Room monitor dim with level control Monitor system selectors Switchable mono summing The 845B Monitor Control section functions as follows MONO Sums the Left and Right Control Room Monitor output to mono e The MONO button works with all monitor selections e Illuminates in red when engaged SMALL1 SMALL2 Selects between the Small 1 and 2 Monitor systems when the MAIN monitor button is disengaged e Supports two stereo monitor systems Routes the Monitor feed to the Small2 when engaged Routes the Monitor feed to the Small1 when not engaged Only active when the MAIN button is not engaged Iluminates in yellow when active o llluminates slightly brighter when engaged MAIN Routes the Control Room Monitor feed to the Main monitor outputs e Supports one stereo or 5 1 monitor systems e Routes the Control Room Monitor feed to the Small monitor selector when not engaged e Illuminates in yellow when engaged MON CUT Monitor Cut Cuts the Control Room Monitor feed e On off switch for the Control Room Monitor section e Illuminates in red when engaged CR DIM Control Room Dim button Attenuates the Monitor output by routing the Monitor feed through the DIM attenuation pot e The CR DIM level is set by the DIM pot e CR DIM is automatically engaged when o The TO BUS button is engaged on the Oscillator o Any of the Talkback buttons T B ALL T B TO AUX or SLATE are engaged e Illuminates in red when engaged
32. ded 2 Select the appropriate channel input for the sources to be recorded microphone instrument or line 3 Connect the following to the inputs of the recorder or DAW as desired e Channel Direct Outputs e Summing Bus Sub master Outputs if multiple channels need to be summed before the input to the recorder make assignments as needed o Odd Even panning is available 4 The channel input level and polarity will be set by the Preamp 5 Use the onboard filter and EQ as needed e Additional signal processors such as a compressor may be patched into various places in the channel audio path via the Insert and other connections on the rear panel 6 Connect the Direct Outputs or the Summing Bus Outputs to the desired recorder or DAW inputs e The Direct Output is always fed by the channel Fader e Make the necessary Summing Bus assignments if needed 7 The multitrack feed will be controlled by the channel Fader and Mute e If the Summing Buses are used the Summing Bus Sub masters SUB 1 8 will provide a final output control before the recorder or DAW 8 Unused channels and echo returns can be used to create a mix of the multitrack DAW returns e If a DAW is used tracks could be sub grouped as needed before feeding the DAW outputs 9 The mix of the multitrack returns and cue effects sends can be created in the box using the DAW mix and auxiliary buses and outputs e If a DAW is not being used unused 1608 channels and echo returns can be used to
33. e 7 8 e Replaces the Summing Bus output signal at the Left and Right Program Assignment switches i when a jack is inserted BUS OUTPUT 1 8 BUS OUTPUT 1 8 ACA OUTPUT i O e Output from the Summing Bus Sub masters SUB 1 8 ACA OUTPUT e Balanced Line level e Female 25 Pin Sub D connector 268B Program Bus Master Output Connections The rear panel connections for the 268B Program Bus Master Outputs are as follows PROGRAM BUS PROGRAM BUS INSERT SEND ACA OUTPUT e Balanced Line level e 1 4 tip ring sleeve jack e Half normalled to Program Insert Return O INSERT RETURN O PROGRAM BUS INSERT RETURN FADER INPUT LEFT INSERT SEND ACA OUTPUT FADER INPUT e Balanced Line level e 1 4 tip ring sleeve jack e Replaces the Program Insert Send signal when a jack is inserted and the PRG INS button is engaged PROGRAM BUS OUTPUT LEFT and RIGHT e Fed post the Stereo Master Fader e Balanced Line level e Male XLR 46 9 5 268B Control Room Monitor Output Connections The rear panel connections for the 268B Monitor Outputs are as follows SMALL 2 CONTROL ROOM OUTPUTS LEFT and RIGHT e Balanced Line level e Male XLR SMALL 1 CONTROL ROOM OUTPUTS LEFT and RIGHT e Balanced Line level e Male XLR RIGHT CONTROL ROOM OUTPUTS MAIN CONTROL ROOM OUTPUTS LEFT CENTER RIGHT e Balanced Line level e Male XLR MAIN CONTROL ROOM OUTPUTS LEFT SURROUND CENTER RIGHT SURROUND e Balanced Line level
34. e EXT IN e Turn the Echo Send ON e Set the Echo Send level to unity gain e The Echo Send is fed by the External Input and the corresponding Auxiliary Bus o Do not use the corresponding channel Echo sends if an isolated input is desired e Press the MIX button on the corresponding Echo Return e The Echo Send output is fed to the Echo Return and the Echo Sends Output connector e Assign the Echo Return to the Program Bus and or Summing Buses as needed e Engage the PAN button if panning is needed e Set the Echo Return level as desired Audio Sub group Master Use channel Echo sends to feed the channels to be grouped to the desired Auxiliary Buses o It might be desirable to de assign these channels from the Program Bus Turn the Echo Send ON Set the Echo Send level to unity gain The Echo Send is fed by the corresponding Auxiliary Bus Press the MIX button on the corresponding Echo Return The Echo Send output is fed to the Echo Return and the Echo Sends Output connector Assign the Echo Return to the Program Bus and or Summing Buses as needed Engage the PAN button if panning is needed Set the Echo Return level as desired Aux Send Multichannel Mix Output Master LCRS 5 1 5 1EX 7 1 Use the Program Bus for the Left and Right channels Select four channel Echo Aux Sends for use as Center Left Surround Right Surround and LFE channels o Using a stereo aux send for the Left and Right Surround channels is suggested o Using a mono aux send for the Center
35. e Male XLR 9 6 845B 6 Track Playback I nput Connections The rear panel connections for the 845B Control Room Control Monitor module are as follows 6 TRACK PLAYBACK 1 LEFT and RIGHT Input e Balanced Line level 6 TRACK e Female XLR connectors PLAYBACK e Left and Right are paralleled with input with Sub D connector 6 TRACK PLAYBACK INPUTS 1 2 and 3 e Left Center Right Left Surround Right 6 TRACK PLAYBACK 2 Surround LFE e Balanced Line level 10 e Female 25 Pin Sub D connector e 6 Track Playback 1 is paralleled with the Left and Right XLR connectors 6 TRACK PLAYBACK 3 O JO 9 7 840B Ancillary Connections The rear panel connections for the 840B Central Facilities module are as follows 9 7 1 Talkback Remote Port and Oscillator Output TALKBACK OSCILLATOR TALKBACK Talkback Remote Port ia e Pin 1 5 volts fused Pin 2 T B To Echo Pin 3 T B to All Pin 4 T B Slate Pin 5 2 Ground 5 Pin Female XLR connector TALKBACK REMOTE OSCILLATOR Oscillator Output e Balanced Line level e Male XLR connector OSCILLATOR OUTPUT NOTE The screened pinout on the rear panel of very early 1608 s is actually WRONG serial numbers below 020 The CORRECT pinout is as above 9 7 2 Stereo Headphone Output Stereo Headphone Jack under armrest on the Right side of the frame e Headphone amplifier output e 1 4 tip ring sleeve jack 48 9 8 Expander Port The Expander Port is i
36. e XLR connector 44 9 2 E1608 Echo Send Return Connections The rear panel connections for the E1608 Echo Send Return module are as follows 9 2 1 Echo Sends ECHO SENDS EXTERNAL INPUT ECHO SENDS EXTERNAL INPUT 1 8 e Balanced Line level e 1 4 tip ring sleeve jack ECHO SENDS OUTPUT 1 8 e Output of the Echo Auxiliary Masters e Balanced Line level e Female 25 Pin Sub D connector 9 2 2 Echo Returns ECHO RETURNS AUX INPUT ECHO RETURNS AUX INPUT 1 8 e Balanced Line level e 1 4 tip ring sleeve jack ECHO RETURNS INPUT 1 8 e Balanced Line level e Female 25 Pin Sub D connector 9 2 3 Echo Return 500 Slots ECHO RETURN 500 SLOTS ECHO RETURNS 500 SLOTS IN 1 8 e Fed from the Reverb Return Input connector e Balanced Line level e 1 4 tip ring sleeve switching jack e The signal from the Reverb Return Input connector is replaced with this signal when a jack is inserted ECHO RETURNS 500 SLOTS OUT 1 8 e Output of the 500 Slot Balanced Line level e 1 4 tip ring sleeve jack e Also normalled to feed the Echo Return module input 45 9 3 9 4 168B Summing Bus Sub master ACA Connections The rear panel connections for the 168B Summing Bus Sub master module are as follows PGM BUS MIX INPUT PERL RS EME e Feeds the inputs to the Program Bus l 2 3 4 Assignment switches on the Summing Bus Sub masters 1 8 e Balanced Line level e 1 4 tip ring sleeve jack 5 e
37. e any third party including any dealer or sales representative to assume liability on behalf of API or to make any warranty for API THE WARRANTY GIVEN ON THIS PAGE IS THE SOLE WARRANTY GIVEN BY API AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS AND IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE WARRANTY GIVEN ON THIS PAGE SHALL BE STRICTLY LIMITED IN DURATION TO FIVE 5 YEARS FROM THE DATE OF THE ORIGINAL PURCHASE FROM API OR AN AUTHORIZED API DEALER UPON EXPIRATION OF THE APPLICABLE WARRANTY PERIOD API SHALL HAVE NO FURTHER WARRANTY OBLIGATION OF ANY KIND API SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE API PRODUCT OR ANY WARRANTY CLAIM This warranty provides specific legal rights and you may have other rights which vary from state to state 63 Housekeeping This is a great place to write down the serial number of your 1608 console and your purchase information just in case you need that information someday in the future 1608 serial Number Power Supply serial Number Purchase Date 64 API 8301 Patuxent Range Road Jessup MD 20794 Tel 301 776 7879 www apiaudio com In a constant effort to improve the subtle details of our products some amount of change is inevitable API reserves the right to modify or change any of the features specifications or performance of its products without notice or o
38. e following features e The Direct Output is fed post fader e The Direct Output is always active except when the channel MUTE is engaged e Balanced line level output at the DIRECT OUTPUT XLR connector Summing Buses The channel output may be assigned to one or more of the eight Summing Buses or Active Combining Amplifiers ACA Some possible applications of the Summing Buses include e Multitrack channel assignments Multitrack summing 5 1 mixing Additional channel outputs Additional echo auxiliary sends e Sub grouping The summing buses ACA include the following features e Individual Summing Bus assignments from the 548B modules e Switchable Odd Even Summing Bus panning on the 548B modules e Routing from Echo Auxiliary Sends 7 and 8 on the 548B modules e Individual on off calibration trim solo and Program Bus assignment controls on the 168B module e Balanced line level outputs at the BUS OUTPUT 1 8 ACA OUTPUT sub D connector Program Bus The channel output can be routed to the Program Bus also ACA for stereo mixing and for the Left and Right channels of a 5 1 mix The Program Bus includes the following features e Program Bus assignment from the 548B modules Program Bus Insert via the 268B module and rear panel connections 440B Stereo Master Fader Individual Left and Right program channel on off calibration and trim controls Balanced line level outputs via the LEFT and RIGHT PROGRAM OUTPUT XLR connectors 14 The co
39. eed to the multitrack recorder or DAW As indicated by these examples the 500 Slots can be custom configured to add versatility and maximize performance The features of the 500 Slots are as follows All eight 500 Slots are empty in the standard 1608 configuration and equipped with Bypass Cards 500 Slots can deliver 48v phantom power to the Echo Return Input connector if equipped with a 512C Preamp The slots are normalled between the Echo Returns Input connector and the inputs to the Echo Return modules If engaged the module mounted in a slot will process the audio before it arrives at the Echo Return module input If a slot is empty the signal will loop through the slot to feed the corresponding Echo Return module input The modules in the Echo Return 500 Slots may be used elsewhere by using the ECHO RETURN 500 SLOT INPUT and OUTPUT patch points on the rear panel Inserting a plug into the ECHO RETURN 500 SLOT INPUT jack will defeat the signal from the Echo Return Input connector but the output of the slot is still sent to the Echo Return module The 500 Slot may be bypassed by using the Echo Return Auxiliary Input 24 3 4 E1608 Connections The rear panel connections for the E1608 Echo Send Return module are as follows ECHO SENDS EXTERNAL INPUT ECHO RETURNS AUX INPUT ECHO SENDS EXTERNAL INPUT 1 8 e Balanced Line level e 1 4 tip ring sleeve jack ECHO SENDS OUTPUT 1 8 e Balanced Line level e Female
40. ereo monitors The Monitor Output section provides on off switching and calibration for a 5 1 Left Right Center Left Surround Right Surround and LFE main monitor system MAIN and the two stereo nearfield monitor systems SMALL 1 and 2 The Monitor Output section has the following features e On off switch for all six Monitor Outputs 5 1 Main monitor trim control Stereo Small 1 trim control Stereo Small 2 trim control Balanced line level outputs The Monitor Output section is the final stage before the selected monitor output is fed to the Control Room Output connectors on the rear panel There are a set of controls for each of the six individual Monitor Outputs that support the 5 1 and stereo monitor systems e CR L Control Room Left CR R Control Room Right CR SL Control Room Left Surround CR SR Control Room Right Surround CR C Control Room Center CR LFE Control Room LFE subwoofer The controls for each 268B Monitor Output function as follows ON On off switch for the Monitor Output MAIN CAL trim pot The trim pot calibrates the corresponding Main Monitor Output level SMALL 1 CAL trim pot The trim pot calibrates the corresponding Small 1 Monitor Output level CR L and CR R only SMALL 2 CAL trim pot The trim pot calibrates the corresponding Small 2 Monitor Output level CR L and CR R only 30 5 4 268B Connections The rear panel connections for the 268B Program Bus Output Master and Monitor Outp
41. es ACA e Program Bus The Left and Right Program Bus PGM Summing Buses The channel output may be assigned to one or more of the eight Summing Buses or Active Combining Amplifiers ACA Program Bus The channel output can be routed to the Program Bus also ACA for stereo mixing and for the Left and Right channels of a 5 1 mix 22 The controls for the E1608 Echo Return output section function as follows Summing Bus ACA Assignment 1 8 Assigns the Echo Return output to one or more of the eight Summing Buses Active Combining Amplifiers e Assignments to the Summing Buses can be made on an individual basis e Summing Buses are fed post the Echo Return level control or post the Echo Return pan pot when it s engaged e Summing Bus assignments are only active when engaged e Switchable Odd Even Summing Bus panning e The Summing Bus assignment buttons illuminate when engaged LVL Level Controls the output level of the Echo Return PAN pan pot Provides continuous panning control e Stereo panning between the Left and Right Program Buses when engaged e Odd and Even panning between Summing Buses when engaged PAN button Activates Left Right panning between the Program Buses and Odd Even panning between the assigned Summing Buses e The PAN button must be engaged to enable Summing and Program Bus panning e Illuminates when engaged A u X N S A F E x 3 Important Note Unlike the pan pot in the 548B Channel
42. g Bus feeds Summing Bus Sub master SUB 1 8 Turn ON the corresponding Sub master Set the sub master to unity gain or as needed Connect the Bus Output connector to the input to the recorder or DAW Audio Sub group Return Use channel Echo Aux sends to feed the channels to be grouped to the desired Auxiliary Buses o It might be desirable to de assign these channels from the Program Bus Turn the Echo Send ON Set the Echo Send level to unity gain The Echo Send is fed by the corresponding Auxiliary Bus Press the MIX button on the corresponding Echo Return The Echo Send output is fed to the Echo Return and the Echo Sends Output connector Assign the Echo Return to the Program Bus and or Summing Buses as needed Engage the PAN button if panning is needed Set the Echo Return level as desired NOTE Alternately the outputs from the Summing Bus Sub masters may be patched to the Echo Return Inputs or Aux Inputs to feed a sub group to the Echo Returns 59 10 6 168B Summing Bus Sub master Applications Multitrack and Audio Sub group Master Use channel assignment buttons to feed the post fader signal to the desired Summing Bus es The audio from all of the channels contributing to a summing bus will be summed at the Sub master Turn ON the corresponding Summing Bus Sub master Set the level to unity gain or as needed The sub master output is fed by the corresponding Bus Output connector Connect the Bus Output to the input of the recorder DAW
43. ho Return Illuminates when engaged NOTE The signals from the Echo Return Input and Echo Send Output MIX are defeated when the AUX IN button is engaged IX Selects the Echo Send output as the input for the Echo Return Illuminates when engaged NOTE The signal from the Echo Return Input is defeated when the MIX button is engaged Echo Return 500 Slots The console is equipped with eight Echo Return 500 Slots These 500 Slots are built to power and interface any API 500 Series module 512C Preamplifier 525 Compressor 550A 3 Band EQ 550B 4 Band EQ 560 Graphic EQ Some possible applications of the 500 Slots include Extra microphone instrument inputs when equipped with a 512C Preamp Extra signal processing for the Echo Return inputs Patchable signal processing for use in the channel Inserts and patch points Patchable signal processing for use in the Program Bus Inserts Patchable signal processing for use anywhere else internally externally etc When equipped with a 512C Preamp the 500 Slot and Echo Return combine to form a powerful input module capable of routing a microphone instrument or line input to the Program and or Summing Buses with full assignment panning and solo functions This can greatly expand the capabilities of the console for almost all applications When equipped with a 512C Preamp an API EQ and a 525 Compressor three 500 Slots can be used to create a single high quality signal path for direct f
44. itor Control level o Mono summing is available o CR DIM is available o Not affected by the MON CUT or Monitor System Selectors The 840B Stereo Headphone Amplifier control functions as follows ON On off switch for the Stereo Headphone Amplifier e Illuminates when engaged STEREO HEADPHONES 7 2 Talkback The 840B Talkback section provides a complete set of Talkback routing options and controls It has the following features Talkback to all Talkback to auxes only Talkback microphone level Independent Slate function with level control Talkback Microphone in Meter Bridge Talkback remote control port The 840B Talkback controls function as follows SLATE Routes Talkback to the Program and Summing Buses e The Left and Right Program Bus Output Masters must be turned ON with the level up to enable Talkback to feed the Program Buses e The eight Summing Bus masters SUB 1 8 must be turned ON with the level up to enable Talkback to feed the Summing Buses Independent Level Control Momentary Switch Automatically engages the CR DIM function when pressed Illuminates in red when engaged Note The SLATE function does not include a tone or oscillator feed SLATE LEVEL Volume control for the Talkback to the Program and Summing Buses e Located adjacent to the SLATE button TALKBACK T B TO AUX Talkback to Auxiliaries Routes Talkback to the enabled Auxiliary Buses The E1608 Echo Send T B button must be engaged to enable Ta
45. k you for choosing API s 1608 analog mixing console Whether you are a newcomer to API or are already a part of the nearly 40 year tradition of API excellence we appreciate your purchase The 1608 small format recording console is based on the designs of the original API 1604 built in the 70 s and early 80 s The success of the 1604 and the continued demand for a small footprint high quality console has produced the 1608 API takes great pride and great care in the hand assembly of all our professional audio products Above all we appreciate our loyal users those who create track mix engineer master and produce who have made the Company what it is today API User s Manual v1 3 01 09 API part 910 0500 Written for Automated Processes Incorporated by Dan Pfeifer 2008 AIT Rights Reserved 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Table of Contents Overview 548B Channel Module 2 1 440B Fader Module 2 2 Mute Solo Section 2 3 Preamp Section 2 4 Echo Auxiliary Sends 2 5 Routing and Output Section 2 6 550A Equalizer 2 560 Equalizer 2 8 548B Connections 1608 Echo Send Return Module 1 Echo Send Section 2 Echo Return Section 3 Echo Return 500 Slots 4 E1608 Connections 168B Summing Bus Sub master Module 4 1 Summing Bus Sub masters 4 2 168B Connections 268B Program Bus Output Master and Monitor Output Module 5 1 Program Bus Output Masters 5 2 440B Stereo Master Fader Module 5 3 Monitor Outpu
46. lkback to feed the corresponding Auxiliary Bus The Echo Send must be turned ON with the level up to enable Talkback to feed the corresponding Auxiliary Bus Momentary switch Independent level control Automatically engages the CR DIM function when pressed Illuminates in yellow when engaged a7 7 3 7 4 7 5 T B TO AUX LEVEL Volume control for the Talkback to the enabled Auxiliary Buses e Located adjacent to the T B TO AUX button T B ALL Talkback to All Activates the SLATE and T B TO AUX functions Routes Talkback to the Program and Summing Buses Routes Talkback to the Auxiliary Buses Momentary switch Automatically engages the CR DIM function when pressed Illuminates in yellow when engaged T B MIC CAL trim pot Calibrates the Talkback microphone level Mute Group The 840B Mute Group section provides one Mute Group with the following features e Control of the Mute switches on assigned 548B Channel modules e The pre fader Echo Auxiliaries of assigned channels may be added to the Mute Group The 840B Mute Group controls function as follows MUTE GROUP Mutes all channels assigned to the Mute Group e Assigned channels will be muted when the master MUTE GROUP button is engaged e Channels may be assigned to the Mute Group on an individual basis by engaging the MUTE GRP button e Assigned channels may be muted independently of the Mute Group e Assigned channels may not be independently unmuted when the master MUTE GRO
47. llator output e he Oscillator output is fed to the OSCILLATOR output connector on the rear panel e Illuminates in red when engaged TO BUS Routes Oscillator output to the Program and Summing Buses e The Left and Right Program Bus Output Masters must be turned ON with the level up to enable the Oscillator to feed the Program Buses e The eight Summing Bus Sub masters SUB 1 8 must be turned ON with the level up to enable Oscillator to feed the Summing Buses e Automatically engages the CR DIM function when engaged e Illuminates in red when engaged 40 7 9 840B Connections The rear panel connections for the 840B Central Facilities module are as follows TALKBACK OSCILLATOR We TALKBACK Talkback Remote Port Pin 1 5 volts fused Pin 2 T B To Echo Pin 3 T B to All Pin 4 T B Slate Pin 5 Ground 5 Pin Female XLR connector Connect pin5 to pin 2 3 or 4 through an external momentary switch for remote talkback use TALKBACK REMOTE OSCILLATOR OSCILLATOR Oscillator Output OUTPUT e Balanced Line level e Male XLR connector NOTE The screened pinout on the rear panel of the 1608 is actually WRONG The CORRECT pinout is as above 7 10 STEREO HEADPHONE J ACK STEREO HEADPHONE J ACK under armrest on Right side of console e Headphone amplifier output e 1 4 tip ring sleeve jack 4 8 0 Meter Bridge The 1608 Meter Bridge provides illuminated VU Meter display for the following outputs The Talkback Mic
48. n is active only when the INS button is engaged e Iluminates when engaged Trim pot The trim pot below the channel pan pot calibrates the FADER IN to the DIRECT OUTPUT stage so the path is exactly at unity gain with the channel fader set to OdB Summing Bus ACA Assignment 1 8 Assigns the channel output to one or more of the eight Summing Buses Active Combining Amplifiers e Assignments to the Summing Buses can be made on an individual basis e Summing Buses are fed post fader or post the channel pan pot when it s engaged e Summing Bus assignments are only active when engaged e Switchable Odd Even Summing Bus panning e The Summing Buses 1 4 can be fed pre or post fader from Echo Auxiliary Sends 7 and 8 15 550A Discrete 3 Band Equalizer The legendary API 550A Equalizer is installed on channels 1 12 in the standard 1608 configuration Features 3 bands of classic API equalization Each band offers 7 API selected frequency centers Reciprocal and repeatable filtering maximum 12 dB of boost cut per band EQ Band 1 and 3 offer shelf peak switching Proportional Q narrows filter Q at extremes Traditional API fully discrete circuit design High headroom 30 dB clip level Few equalizers enjoy the respect and admiration of the coveted API 550A Designed by the now legendary Saul Walker in the late 60 s the discrete 550A was first used as a modular OEM equalizer As the industry rapidly embraced the sonic quality of the 550A it q
49. nds external inputs and the Echo Return section It is possible to combine an external audio input with the Echo Bus at the input of the Echo Send section V U R E T T B E X T I N The Echo Send section can be fed from two simultaneous sources e Auxiliary Bus The output of its corresponding Echo Sum Bus and or e External Input ECHO SEND EXTERNAL INPUT 1 4 tip ring sleeve jack Echo Send Master The Echo Send Master is the master control level for its corresponding Echo Send Bus External Audio Input In addition to the normal feed from its corresponding Echo Sum Bus the Echo Send can accept a balanced line level input from the corresponding ECHO SEND EXTERNAL INPUT 1 4 tip ring sleeve jack on the rear panel This signal is added to the output from the corresponding Echo Sum Bus when the EXT IN button is engaged IMPORTANT NOTE When the EXT IN button is engaged the external input is combined with the output from the corresponding Echo Sum Bus and is fed to the input of the Echo Send section Regardless of the input source the balanced line level output of the Echo Send is fed to the ECHO SENDS OUTPUT 1 8 sub D connector on the rear panel for connection to effects devices cue foldback systems and so on This output is active whenever the corresponding Echo Send is turned on The output of the Echo Send can be selected as the input to its corresponding Echo Return section for additional routing to the Program
50. nds 7 and 8 e Sends 7 and 8 are fed post fader when the PRE button is not engaged e Illuminates when engaged 7 8 button On off switch for Sends 7 and 8 e Iluminates when engaged T o B T s 7 8 13 2 5 TO BUS Routes the output of stereo Send 7 and 8 directly to the Summing Bus 1 4 assignment section When TO BUS is engaged the send functions as follows e Auxiliary Buses 7 and 8 are fed in addition to the Summing Bus 1 4 assignment section e Auxiliary Sends 7 and 8 cannot access the Program Bus from the channel module e he 7 8 on off button is bypassed for the feed to the Summing Busses but is still active for the feed to Auxiliary Buses 7 and 8 The 7 8 PRE button may be used The 7 8 stereo level control and pan pot are active The channel output pan pot is bypassed for Summing Bus assignments from Send 7 8 Illuminates when engaged Routing and Output Section The routing and output section of the 548B Channel module provides a comprehensive set of routing and output functions including e Insert High pass filter Switchable panning Bus assignments Direct Output The output section provides three simultaneous audio output options e Direct Output Direct balanced line output e Summing Buses Any of eight summing buses ACA e Program Bus The Left and Right stereo Program Bus PGM Direct Output The Direct Output feeds the channel output signal to the DIRECT OUTPUT on the rear panel The Direct Output has th
51. nterfaced with a single 90 Pin male Elco connector The 1608 is equipped with an Expander Port that allows the connection of a sixteen channel API 1608 Expander The Expander Port allows for complete integration of all major console functions e Program Bus Summing Bus Auxiliary Bus Mute Group Solo Bus Solo In Place 9 9 Power Supply Unit Connection The Power Supply Unit connection is interfaced with a single multi pin mil spec connector 1608 Weights and Dimensions Width Height Deph Weight Standard 16 channel 37 6 inches 17 9 inches 33 0 inches 228 Lbs console 16 Channel 25 6 inches 17 9 inches 33 0 inches 162 Lbs Expander 32 Channel Console 17 9 inches 33 0 inches 390 Lbs 49 10 0 Application Guide The API 1608 is a highly versatile audio production console and is at home with a wide variety of applications including e Multitrack Recording Overdubbing Mixing Broadcasting Post Live Sound API realizes the owners of the 1608 are professional users so this section of the manual is designed to provide quick and easy setups for basic applications Note These setups are intended to be a very basic Getting Started guide and should by no means considered to be comprehensive 10 1 Multitrack Recording This setup uses the 1608 as an input path to a multitrack recorder or Digital Audio Workstation DAW 1 Connect the audio sources to be recorded to the channel module inputs as nee
52. ntrols for the 548B Routing and Output section function as follows PAN pan pot Provides continuous panning control e Stereo panning between the Left and Right Program Buses e Odd and Even panning between Summing Buses when engaged PAN button Activates Odd Even panning between the assigned Summing Buses e The PAN button must be engaged to enable summing bus panning e The PAN button only applies to summing bus panning and does not affect Program Bus Left Right panning e Illuminates when engaged PGM Program Assigns the channel output to the Program Bus e he Program Bus is fed post the channel pan pot e Iluminates when engaged FLTR Filter Activates the channel output high pass Filter e 3 dB at 50Hz e 6 dB octave slope e Illuminates when engaged e he channel output Filter is located post the Fader wiper and pre the Fader amplifier Note An additional band pass filter is available on channels equipped with 550A Equalizers INS Insert Activates the channel Insert Return The Insert Send is fed pre fader from the output of the Equalizer e he Insert Send is always active e The Insert Send is a balanced line level signal routed to the INSERT SEND EQUALIZER OUTPUT 1 4 tip ring sleeve jack on the rear panel e The Insert Return accepts a balanced line level signal from the INSERT RETURN FADER INPUT 1 4 tip ring sleeve jack on the rear panel e The Insert Return is located post EQ and pre fader e The Insert Retur
53. proved resolution in the critical area of 4 dB Incorporating API s exclusive circuitry and proprietary components such as the legendary 2520 op amp the 560 artfully blends the past with present layout with function The API 560 was created to fit all applications for the professional engineer For most of the 70 s and 80 s every remote recording console that API manufactured used this versatile graphic EQ It is also ideal for studio and live sound applications where a professional result is required The current 560 design has been taken from the original blue prints and spec control drawings from the API archives The large number of available EQ bands make the 560 an ideal companion to parametric EQ as well as ideal for signal sweetening and room tuning Not lacking in features the 560 makes use of API s unique Proportional Q design introduced by API in the 60 s intuitively widening the filter bandwidth at lower boost cut levels and narrowing it at higher settings In addition boost and cut characteristics are identical so previous actions can be undone The extraordinary headroom made possible with APl s proprietary 2520 op amp offers predictable and wonderful analog performance under duress With a wider range of 500 mounting options the 560 is a valuable asset to your performance critical applications The 560 Graphic Equalizer exhibits the reliability long life and uniformity which are characteristic of API products
54. r This provides independent control when a channel is also assigned to the Program Bus The Echo Returns can be used to return additional channels from the DAW returns from virtual instruments returns from outboard effects processors or any other line level source If the Echo Return 500 slots are fitted with the 550A Discrete 3 Band EQ 550B 4 Band EQ 560 Graphic EQ and or 525 Compressors the audio returning to the Echo Returns can be further processed before contributing to the mix Echo Returns are assigned to contribute to the mix in the same manner as with the channels for both stereo and surround mixing Engage the PAN button to enable the pan pot Outboard Effects Processor Connections The diagram below shows the connections between a 1608 and outboard effects processors for either mixing scenario above Returning the outputs of the outboard effects processors to the Echo Returns Auxiliary Inputs allows easy switching of the Echo Return input source between the return of the DAW main input and the return from the effects processor Aux Input without changing connections on the rear panel ECHO RETURNS ECHO SENDS AUX INPUT EXTERNAL INPUT Outboard Effects Processors 55 Mix Output Connections The diagram below shows mix output connected to a DAW or other mix recorder PROGRAM BUS NSERT SEND ACA OUTPUT FADER NPUT OO O O LEFT qui 0000 0101010 BUS OUTPUT 1 8 oO JO ACA OUTPUT
55. r Listen AFL Non destructive mono stereo o Solo In Place SIP Destructive panned post fader e Illuminates in yellow when engaged NOTE PFL is the default solo mode NOTE Channels and Echo Returns must be assigned to the Program Bus for Solo In Place for their mutes to activate when other channels or Echo Returns are soloed SAFE Activates the Solo Safe mode for that channel e The SAFE button protects that channel from being muted when the Solo In Place function is active and another channel or an Echo Return is soloed e Illuminates when engaged MUTE Cuts the primary audio output e he MUTE button is the on off switch for the primary channel output and is located post fader in the signal flow e he MUTE button is the numbered button located just above each fader e Illuminates in red when engaged 10 2 3 MUTE GRP Mute Group Assigns the channel to the master Mute Group e All channels assigned to the master Mute Group will mute when the MUTE GROUP button on the 845B Central Facilities Module is pressed e Illuminates when engaged NOTE If the channel MUTE GRP button and the AUX PRE MTE button on the 845B Central Facilities Module are engaged all pre fader Echo Auxiliary Sends will be muted when the master MUTE GROUP button Is engaged Preamp Section The Preamp section of the 548B provides three audio input options e Line Input e Microphone Input e Instrument Input A Peak Indicator is located at the output of
56. rol section post the Stereo Master Fader e Illuminates when engaged 7 a Vr s 6 A A CR SOURCE 34 6 3 845B Connections The rear panel connections for the 845B Control Room Monitor Control module are as follows 6 TRACK PLAYBACK 1 LEFT and RIGHT Input e Balanced Line level e Female XLR connectors e Left and Right are paralleled with input with Sub D connector 6 TRACK PLAYBACK INPUTS 1 2 and 3 e Left Center Right Left Surround Right Surround LFE e Balanced Line level e Female 25 Pin Sub D connector e 6 Track Playback 1 is paralleled with the Left and Right XLR connectors 6 TRACK PLAYBACK 2 6 TRACK PLAYBACK 3 O JO 35 7 0 840B Central Facilities Module The 840B Central Facilities provides several ancillary console functions The control sections are included for the following functions e Headphone amplifier Talkback controls Mute Group controls Master Solo controls Meter control Peak indicator controls Oscillator T OSCILLATOR Q PEAK THRESHOLE CHANNEL METERS SOLO MASTER mas aso AEP TALKBACK STEREO HEADPHONES 36 7 1 Stereo Headphone Amplifier The 840B Stereo Headphone Amplifier is designed for use by the engineer or others in the Control Room It has the following features On off switch 1 4 stereo headphone jack located under the armrest Feeds the current Control Room Monitor source from Monitor Control section o Volume follows the Mon
57. rophone and Power Supply Indicators are also mounted in the Meter Bridge Channel Preamp Channel Direct Output Summing Bus Sub master Output Left and Right Program Output Echo Send Output 8 1 8 2 Channel Bus Meters The controls for the Meter Bridge are located in the Channel Meter section on the 840B Central Facilities module These controls select the sources for the sixteen Channel Meters in the Meter Bridge as follows No Buttons Engaged Meters display the output of the channel Preamps DIR OUT Direct Output Meters display the output of the channel Direct Output e Replaces the channel Preamp output meter feed SUB MSTR Sub master Meters 1 8 display the output of the Summing Bus Masters SUB 1 8 e Replaces the channel Preamp output and Direct Output meter feeds for Meters 1 8 e Meters 9 16 will display the channel Preamp output e Meters 9 16 will display the channel Direct Output if the DIR OUT button is engaged Left and Right Program Meters The large LEFT and RIGHT Meters display the stereo Program Master Output post the Master Fader 42 8 3 8 4 8 5 Echo Send Return Meters The E1 E8 Meters display the output of the eight Echo Auxiliary Send Masters post the Echo Send Master Power Supply Voltage I ndicators Blue LED indicators are provided for the five power supply voltages e 16V 16V 24V 5V 48V The Power Supply Voltage Indicators are located
58. s e Microphone instrument line preamplifier Equalizer High pass filter Balanced insert Eight 8 Echo Auxiliary Sends Fully featured mute and solo section Pan pot Direct Output Program and Summing Bus assignments 20 All eight echo aux sends can be routed either pre or post fader Echo aux Sends 7 8 can be routed to feed the Summing Buses r2 Re The basic signal flow through the 548B Channel module is as follows um input preamplifier gt equalizer gt insert gt fader mute gt output routing mu MCE TOMATE mab 2 1 2 2 440B Fader Module Mute Solo Section The 440B Mono Fader is the primary output level control for the channel The channel Fader controls the output to the Direct Output Summing Buses Program Bus Post fader Echo Auxiliary Sends When the Fader is set to OdB the level is at unity gain Each 440B Mono Fader module contains eight mono Alps 100mm faders and supports the eight channel modules mounted above it The 548B Channel module provides a comprehensive set of solo and mute controls including e Channel on off switch AFL PFL and SIP Solo functions e Solo Safe Mute Group assignment The controls for the 548B Mute and Solo function as follows qr msc mpn SOLO Activates the selected solo function e The following solo functions may be selected via the 845B Central Facilities Module o Pre fader Listen PFL Non destructive mono o After Fade
59. s full solo capabilities and full routing to the Program and Summing Buses Some possible Echo Return applications include e Return path for external devices multitracks reverb effects units etc e Input path for tracking overdubs and virtual instruments e Audio Sub grouping when used with the Echo Send section e 5 1 mixing The Echo Return section has the following features e Multiple input sources including a switchable auxiliary external input On off switch Level control Switchable pan pot Solo PFL AFL SIP Solo Safe Patchable 500 Slot for 500 Series modules Routing from the Echo Send section Output assignments to the Program and Summing Buses ACA A Uu X i N 5 A F E The Echo Return section can be fed from one of three sources e Echo Returns Input ECHO RETURNS INPUT 1 8 sub D connector e Echo Return Auxiliary Input ECHO RETURNS AUX INPUT 1 8 1 4 tip ring sleeve jack e Echo Send Output The output of the Echo Send section x Ss 21 Echo Returns Input Accepts the balanced line level input from the ECHO RETURNS INPUT 1 8 sub D connector on the rear panel e The Echo Returns connector is the default input for the Echo Return e Echo Return 500 Slots are normalled between the Echo Returns Input connector and the input to the Echo Return module o The signal from the Echo Return Input connector is fed through the corresponding Echo Return 500 Slot before being fed to the Echo Return module input
60. se the 1608 as both the input path to a multitrack recorder or DAW and a return path for mixing as well This is accomplished by interfacing the recorder or DAW within the channel signal flow This simultaneously provides high quality input paths for recording and powerful analog mixing capabilities It is best suited for use with a DAW but could be used with any multitrack recorder Possible configurations include Preamp Output to DAW Input DAW Output to Equalizer Input e Input Path Preamp Only e Return Path EQ Insert Fader Filter Panning Output Assignments Echo Aux Sends Insert Send EQ Output to DAW Input DAW Output to Insert Return Fader Input e Input Path Preamp and EQ e Return Path Fader Filter Panning Output Assignments Echo Aux Sends Additional signal processing can be added at any point in the patching if needed Another possible configuration is using the 1608 channels to feed the multitrack recorder or DAW and the Echo Returns as multitrack returns or vice versa This might require sub grouping the tracks before feeding the DAW outputs od 10 4 E1608 Echo Send Applications Echo Send Master Turn the Echo Send ON e Set the level to unity gain e The Echo Send is fed by the corresponding Auxiliary Bus e The Echo Send output is fed to the Echo Sends Output connector Mix Input e Connect the output of the desired device effects unit recorder DAW etc to the Echo Send External Input e Engage th
61. standard 1608 configuration If a slot is empty the signal will loop through the slot to feed the corresponding Echo Return input when a Bypass Card is inserted into the card edge connector of the corresponding slot These cards are supplied by API when the console is delivered without 500 modules in any 500 Slot e 500 Slots can deliver 48v phantom power to the Echo Return Input connector if equipped with a 512C Preamp e The slots are normalled between the Echo Returns Input connector and the inputs to the Echo Return modules e If engaged the module mounted in a slot will process the audio before it arrives at the Echo Return module input e If a slot is empty the signal will loop through the slot to feed the corresponding Echo Return module input e The modules in the Echo Return 500 Slots may be used elsewhere by using the ECHO RETURN 500 SLOT INPUT and OUTPUT patch points on the rear panel e Inserting a plug into the ECHO RETURN 500 SLOT INPUT jack will defeat the signal from the Echo Return Input connector but the output of the slot is still sent to the Echo Return module e The 500 Slot may be bypassed by using the Echo Return Auxiliary Input WARNING WARNING WARNING WARNING WARNING The use of NON VPR Alliance approved 500 series modules in the 1608 is vehemently discouraged and may cause operational difficulties with the console Improper operation excessive current draw and poor module fit are all potential issues with these
62. t Controls 5 4 268B Connections 845B Control Room Monitor Module 6 1 Control Room Monitor Controls 6 2 Control Room Monitor Source Selectors 6 3 845B Connections 40B Central Facilities Module Headphone Amplifier Talkback Mute Group Aux Pre Mute Solo Master Channel Meter Control Peak Threshold Oscillator 840B Connections Headphone Jack NNNNNNNNNN 09 FE OCON ADU X NH eo eter Bridge 1 Channel Bus Meters 2 Left and Right Program Meters 3 Echo Send Return Meters 4 Power Supply Voltage Indicators 5 Talkback Microphone 9 0 10 0 Rear Panel 9 9 2 0 NO U1 BR WO 548B Channel Module Connections E1608 Echo Send Return Connections 9 2 1 Echo Sends 9 2 2 Echo Returns 9 2 3 Echo Return 500 Slots 168B Summing Bus Sub master ACA Connections 9 3 1 Summing Bus Sub master Outputs 9 3 2 Program Bus Mix Inputs 268B Program Bus Master Output Connections 268B Control Room Monitor Output Connections 845B 6 Track Playback Input Connections 840B Ancillary Connections 9 7 1 Talkback Remote Port and Oscillator Output 9 7 2 Stereo Headphone Output Expander Port PSU Connection Application Guide 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 Multitrack Recording Multichannel Mixing DAW Hybrid E1608 Echo Send Applications E1608 Echo Return Applications 168B Summing Bus and Sub master Applications Echo Return 500 Slot Applications Rear Panel DB25 Connection Diagrams
63. today s music WARNING WARNING WARNING WARNING WARNING The use of NON VPR Alliance approved 500 series modules in the 1608 is vehemently discouraged and may cause operational difficulties with the console Improper operation excessive current draw and poor module fit are all potential issues with these devices For the most recent list of VPR Alliance approved modules please visit Www apiaudio com API reserves the right to deny warranty claims when non VPR Alliance 500 series modules are used 16 560 Discrete 10 Band Graphic Equalizer The classic API 560 Equalizer is installed on channels 13 16 in the standard 1608 configuration Features 10 bands of API proprietary equalization Familiar graphics operation on one octave centers 12 dB of boost cut per band Proportional Q narrows filter Q at extremes Additional resolution within the 4 region Center detent for reliable reset Silent bypass button Re issue of the 1969 API 560 EQ Originally conceived for use in API Consoles of the 60 s and 70 s the API 560 is a unique device designed to accomplish tasks that no other EQ can It delivers that one of a kind API sound precision easy set filtering and high headroom in a very small package Extremely fast to set and reset using accurate zero detents the curve shaping potential of the 560 is unmatched At home both in field recording and the studio environment this new old 560 is true to the original 560 with im
64. uality of any non authorized third party service or vendor is beyond the control of API Therefore use of NON API VPR Alliance modules in any API product including consoles may VOID this warranty Also service or modification of any API unit except by an authorized API representative may VOID this warranty API reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out Final determination of warranty coverage lies solely with API This warranty is extended to the original purchaser and to anyone who may subsequently purchase this product within the applicable warranty period Proof of purchase may be required To obtain service a Call API at 301 776 7879 8 30 AM to 5 PM Monday through Friday Eastern Time to get a Return Authorization RA Products returned without an RA number may not be accepted b Pack the defective part by wrapping in plastic and cushioning material Seal securely in an approved shipping container If you do not have a sufficient shipping container ask API for advice when calling for the RA number c Include a note explaining the problem and conditions of the service request Include your complete return address no P O Boxes please d Ship the product freight prepaid to API 8301 Patuxent Range Road Jessup MD 20794 IMPORTANT Be sure the RA number is plainly written on the shipping carton This is your sole warranty API does not authoriz
65. uickly found its way into many custom console designs of the era Many of these consoles are still in use today Forty years later the 550A remains the standard against which other EQs are measured and it has played a major role in the recording industry for decades Still copied but never duplicated the 550A became API s standard channel module EQ when the company began manufacturing consoles in 1971 With virtually all existing units spoken for popular demand for this EQ resulted in API resuming production in 2004 The 550A provides reciprocal equalization at 15 points in 5 steps of boost to a maximum of 12dB of gain at each point The fifteen equalization points are divided into three overlapping ranges The high and low frequency ranges are individually selectable as either peaking or shelving and a band pass filter may be inserted independently of all other selected equalization settings Frequency ranges and boost cut are selected by three dual concentric switches and a pushbutton in switch allows the EQ to be silently introduced to the signal path A small toggle switch is used to insert the band pass filter into the 550A The combination of Walker s incomparable 2520 op amp and his Proportional Q circuitry gives the 550A user an uncomplicated way to generate acoustically superior equalization With the long awaited reissue of this unit an EQ that has had such a part in the history of recording is continuing to make history in
66. ut module are as follows PROGRAM BUS PROGRAM BUS INSERT SEND ACA OUTPUT INSERT SEND e Balanced Line level ACA OUTPUT e 1 4 tip ring sleeve jack e Half normalled to Program Insert Return INSERT RETURN PROGRAM BUS INSERT RETURN FADER INPUT FADER INPUT e Balanced Line level e 1 4 tip ring sleeve jack e Replaces the Program Insert Send signal when a jack is inserted and the PRG INS button is engaged PROGRAM BUS OUTPUT LEFT and RIGHT e Balanced Line level e Male XLR SMALL 2 CONTROL ROOM OUTPUTS LEFT and RIGHT e Balanced Line level e Male XLR SMALL 1 CONTROL ROOM OUTPUTS LEFT and RIGHT e Balanced Line level e Male XLR m CONTROL ROOM OUTPUTS MAIN a MAIN CONTROL ROOM OUTPUTS LEFT CENTER RIGHT i EN e Balanced Line level e Male XLR MAIN CONTROL ROOM OUTPUTS LEFT SURROUND CENTER RIGHT SURROUND s Balanced Line level e Male XLR 31 6 0 845B Control Room Monitor Control Module The 845B Control Room Monitor Control module provides two functions e Selection and volume control of the Control Room Monitor system e Selection of the Control Room Monitor input source amp T K A u x eo A E 4 A TII GTK PLAYBACK ECHO SENDS CR SOURCE CONTROL ROOM 32 6 1 Monitor Control Section 845B Monitor Control section provides a comprehensive set of controls for up to three Control Room Monitor systems Features include e Monitor volume

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