Viking MCX-106 User's Manual
Contents
1. d 10 0 L 10 90 50 100 20 500 1000 2000 5000 10000 200 Frequency POWER AMP TOTAL HARMONIC DISTORTION 4n an ee 1 19 50 Output 100 200 300406 W REVERBERATION FREQUENCY RESPONSE 2 2000 5000 10000 20000 Hz Appearance 356 14 605 23 8 371 14 6 __ 14 ATOA Communications TOA ELECTRIC CO LTD KOBE JAPAN Printed in Japan 133 02 690 802. TOA POWERED MIXER Model MCX 106 71 i i FN EN 39 E NIE Lr See cma MN MU E E px s m D 6 0 p o D lions TOA ELECTRIC CO LTD KOBE JAPAN Contents General Description 22 Aes NE ae eae eR ede 2 LCSTun Sue edu Baha EU REC CIR hans 2 Front Panel Input 3 Front Panel Output Section 4 Front Panel Stereo Cassette Recorder Section 5 Front Panel Patch Bay amp Bus 6 Reat Patel bay dah RENE das Ip es 6 Connection Examples pe Salad bea EVE 7 Input Connections ls icem mee AG ee HAGO E A RI RR IR 8 How to get a good MIX Lecce ee eee dnes nee 9 Recording Level Setting 9 Typ f Cassette Tape vested eps WP Oa geo SEES 10 Maintenance of Stereo Cassette 10 Block and Level Diagrams 2 11 Specifications i240 lcs e E ek Mae eed ewe cee 12 13 Characteristic 13 14 Appearances i selle dad Goon eT eres dad Rie 14 Precautions 2 Description of components
3. We recommend through cleaning of the tape transport assembly after every four to six hours of use to ensure optimum recording and play back performance Demagnetizing the tape heads The recording head will become magnetized after prolonged use This residual magnetism will degrade and possibly destroy your valuable recordings by adding unwanted noise and distortion so it is necessary to frequently demagnetize the heads There are many inexpensive head demagnetizers available follow the manufacturer s directions for use Block and Level Diagrams BLOCK DIAGRAMS PEAK Ca more o INPUT LEVEL 4 GEQ OUT wW 8 SA GEQ uj A 69 gt REV EFF SA ca INPUT M t PGMOUT H 1 6 REC LEVEL LOW MID HIGH x 2 p REC TAPE 63 250 Ik 4k Tak 3 PAN TO PGM 7 FB COMP PROTECT SA LA 12 12 59 E P T FB EFF TO PGM OUT 46 ux TAPE s EFF TO FB TAPE OUT PWRINI VE SPEAKERS EFF RET 2 iTO FB 9 IE 300W 2chms we h 0 cm REV EFF bj aN EFF 4 SEND REC zr 35m
4. D REC PAN p 7 EFF PHONES v n PHONES 7 OUT 101 seers BA 3 REV EQ in es E REVERBRATION UNIT Low HIGH SA Oe REC LEVEL BA f A EI L BA DBX pr y 2 ENCODE i 4 m 4 252 ee f 7 AUX TO FB SA 4 10 L 4 4114 7 9 REC LEVEL 9 f AUX R BA DBX FLUORESCENT BARGRAPH 1 AUX IN a REC REC BAL PEAK METER B AUX TO t jLEveL 1 ENCORE 1 COUNTER ZERO A PGM jo p Sw RETURN i 4 R 1 10 O t REC PLAY p 1 4 ie es 63 EQ i COUNTER ca LL R DECODE j t sic BUSS La 94 le bd tink FB REC PLAY 1 L 4 d i TAPE UB CONTROLLER EFF Lr R EQ 672 1 DECODE H M T e Toes rote Loa eo i 050 4 cue METAL O o icon RoL L DBX IN OUT PGM RAN r a T i MIXING FB XE ERASE 4 REMOTE REV EFF BIAS Busses js RP REC R TRANSPORT 4 NUMBER IN SQUARE BRACKETS NOMINAL SIGNAL LEVEL IN dB D gt AMPLIFIER CONTROL EW S NUMBER IN TRIANGLE GAIN OF AMPLIFIER IN dB Qo swen TAPE DECK BLOCK x LEVEL CONTROL TAPE vo REMOTE LEVEL DIAGRAM PWR OUT TAPE OUT ora INPUT Lowz leat gt EQ PGM EFF PWR S LX PGM OUT INPUT 1 o HIGH GH Z y vd ry PAN i LX O F8 OUT EFF SEND EFF RET 1 L
5. Effect Recording Pan Control EFF REC PAN This control assigns the reverb or external effects signal to the recording L and R mixing bus ses In the center detended position the signal is assigned equally to L and R panning the control gradually assigns the effect to either bus exclusively Reverberation Low Equalizer Control REV LOW EQ The low EQ control alters the low frequency response of the reverberation signal The 0 de tented position provides flat audio response Playback to Program Control TAPE TO PGM This control adjusts the level of playback signal routed to the program mixing buss and thus the level of the internal tape source in the main mix Playback to Foldback Control TAPE TO FB This control adjusts the level of playback signal to the foldback mixing buss and thus the level of the internal tape in the on stage monitor mix EQUALIZATION n n MASTER PROTECT BATCH Ba BUSS LING Gen amp n 9 E MCX 106 Buss Link Jack BUSS LINK Patching Jack PATCH BAY OUT Patching Jack PATCH BAY IN Aux Input L and R AUX IN L R The aux L and R 1 4 phone jacks are unbalanced and accept low and high impedance sources a
6. amp Load 300W RMS 20 200W RMS 40 120W RMS 80 Power Output at Clipping 1 THD 1kHz 348W RMS 20 238W RMS 40 140W RMS 80 Total Harmonic Distortion Less than 0 1 200mW 200W RMS 20Hz 20kHz Typically below 0 05 Compressor Dynamic Range Greater than 26dB Hum and Noise At least 110dB S N ratio 20Hz 20kHz At least 113dB S N ratio IHF A weighted 0dB 0 775V 204 7 75V RCA PIN JACK Damping Factor Greater than 200 1kHz 40 Input Sensitivity 4dBm 1 23V Input Impedance 10kQ Output Connector Phone Jack X2 Power Requirement 600 W 120V AC 50 60Hz Dimensions WXHXD 605X371X356mm 23 8X14 6 X14 0 inch Weight 27 2 kg 60 Ibs 0dBm is referenced to 0 775V RMS Specifications are subject to change without notice Specifications STEREO CASSETTE DECK SECTION Mechanism 1 Motor 3 Solenoid Mechanism Control 4 Bit Micro Computer Tape Compact Cassette C 30 C 46 C 60 or C90 Track Format 4 Track 2 Channel Stereo Heads 2 Channel Stereo Recording Play Back Permalloy Erase Ferrite Double Gap Tape Speed 1 7 8 ips 4 75 cm s 1 Pitch Control 10 of normal Tape Speed Play Back Only Wow amp Flutter Less Than 0 08 RMS NAB Weighted Fast Wind Time Less Than 100 seconds C 60 Tape Motor Electronically Governor Frequency Response 40 Hz to 12 5 kHz Metal Overall Record Playback Noise Reduction DBX type II IN OUT Switchable Signal to Noise Ratio 70dB DBX IN 20 Hz 20 kH
7. 15dB of continuously variable active peaking equalization at 2kHz and has a flat audio re sponse when set to the 0 detented position Low Equalizer Control LOW EQ The low EQ control provides 13dB at 100Hz and 15dB at 50Hz of continuously variable active shelving equalization The 0 detented position pro vides flat audio response Reverb Effects Control REV EFF This control determines the level of signal assigned to the re verb effects buss Rotating the control clockwise increases the amount of reverb effect in that channel Low Impedance Connectors LOW Z The XLR connectors are low im pedance electronically balanced inputs with an input impedance of Ik ohms Peak Indicator PEAK The peak indicator lights when the pre or post EQ signal level reaches 3dB below clipping giving a visual reference for optimum setting of the trim con trol PEAK 5 D 29 Y x Y DU NE 3 ex 3 er CED B 5 O S H 09 2 3 Q 5 3 6 2 8 2 x 2 8 5 9 D 5 5 8 E REV EFE gt weur a o 65 e e B OGG 5 EX ANS OF OO High Impedance Connectors HIGH Z These connectors are unbalanc ed standard 1 4 phone jacks wi
8. and functions on the MCX 106 Descriptions may vary depending on each manu facturer In our Operating and Instruction Manual explanation of components and functions is made according to our usage for them MCX 106 Operating Guide 1 XLR Type Audio Connector The connectors are wired as follows The pin 1 is ground shield the pin 2 cold low minus the pin 3 hot high plus A Few Words about design The MCX is quite an unusual product but the reasoning behind its design was quite simple we wanted to intergrate all the basic components of a sound reinforcement system and a recording studio into a single transportable package The basic components of the MCX are as follows Six channel main mixer Six channel on stage monitor mixer Six channel special effects mixer Six channel recording mixer Stereo tape deck 6 One octave equalizer 7 Patch bay 8 Headphone cue monitorsystem 9 Three hundred watt poweramplifier 10 Road case Each of these components functionsindependently of the others although some do share common signal processing and control circuitry For example the main mixer effects mixer and recording mixer all make use ofthe same input equalization on each ofthe six channels And the input trim control performs the same function for all four mixing sections General Description The MCX 106 is a compact self powered mixer with a Microprocessor controlled s
9. temperature of the unit rises above acceptable levels or if DG is drifted to the speaker outputs If the LED should light speaker wiring and ambient temperature of the MCX 106 should be checked If the LED remains lighted the unit should be referred to qualified service personnel for repair Note MCX 106 protection cir cuitry will 1 detect faulty con ditions within the power amp lifier 2 give a visual indication and 3 automatically shut down until the fault condition is alleviated This special circuitry ensures maximum reliability and virtually eliminates equip ment damage due to unsafe or fault conditions Please refer to fault protection table on page 9 for full explanation of this important feature Counter Reset Button Resets the tape couter to 000 Tape Counter Indicates how far the tape has travelled Tape Indicator DK Indicates the type of tape used The deck automatically selects the type of tape NORMAL CrO METAL Cassette Receptacle Eject Button EJECT Ejects the tape Pitch Control PITCH CONTROL Varies the tape transport speed during playback by 10 Front Panel Stereo Cassette Deck Section Cue Indicator Remains lit during operation of the Cue function r DBX Indicator Lights when the dbx reduction circuitry is activated This switch selects return position the tape will rewind and stop at any point on the tape that you desi
10. A O EFF ouT REC LEVEL EFF RET 4 7 REC OUT AUX IN O D 4 Buss Q TAPE DECK BLOCK LINK PGM EFF REC 20 PEAK LEVEL 420 429 4 0 5 PGM OUT 44 BUSS LINK 4 GEQ IN FB OUT PWRIN GEQOUT REC OUT OUT 20 EFF RET 30 E ES PWR OUT TAPE OUT Specifications MIXER SECTION Frequency Response 0 3dB 30Hz 20kHz HIGH Z input TRIM at 0 positio n Total Harmonic Distortion 0 05 4dBm at 1kHz Hum and Noise Open Equivalent Input Noise Equivalent Input Noise All level Controls Minimum PGM Master at MAX and all input level controls minimum 93dBm IHF A PGM Master at MAX and one input level control at MAX 130dBm 20Hz 20kHz 133dBm IHF A 102dBm IHF A 72dBm INPUT SPECIFICATIONS FOR USE WITH NOMINAL ACTUAL LOAD IMPEDANCE CONNECTION Maximum Voltage Gain INPUT to PGM out 59dB INPUT to EFF out 45dB INPUT to FB out 59dB INPUT to REC out 45dB INPUT to GEQ out 59dB AUX to PGM out 14dB EFF RET to PGM out 24dB Equalization 63Hz 12dB Peaking 125Hz 12dB Peaking 250kHz 12dB Peaking 12dB Peaking 1 2 12dB Peaking 2kHz 12dB Peaking 4kHz 12dB Peaking 8kHz 12dB Peaking 16kHz 12dB Peaking Peak Indicators Red LED on each input channel LED s turn on at 3dB below clipping SENSITIVITY PGM OUTPUT LEVEL 4dB MAX BEFORE CLIP INPUT L
11. EVEL CONNECTOR TET 500 TO 2500 MICRO PHONES CHI OPEN 2 50kQ OR LOWER IMP LINES XLR TYPE NC3F 55dBm 1 38mV 34dBm 15mV 16dBm 123mV 1 7dB 0 94V 35dBm 13 8mV 14dBm 150mV PHONEJACK 4dBm 1 23mV 420dB 7 75V 10kQ OR LOWER IMP LINES 50kQ OR LOWER IMP LINES AUX L amp R EFF RET PHONE JACK RCA PIN JACK 2dBm 0 61V PHONE JACK 104 245mV 8dBm 1 9V 20dBm 77 5mV 50kQ OR LOWER IMP LINES 4dBm 1 23V PHONE JACK 10kQ OR LOWER IMP LINES 4dBm 1 23V PHONEJACK 22kQ OR LOWER IMP LINES BUSS LINK PGM FB EFF OUTPUT SPECIFICATIONS ACTUAL LOAD IMPEDANCE FOR USE WITH CONNECTION NOMINAL NOMINAL 4dBm 1 23V 420 dBm 7 75V PHONE JACK OUTPUT LEVEL MAX BEFORE CLIP CONNECTOR 6000 OR HIGHER 50009 IMP LINES PGM 4dB 1 23V 204 7 75V PHONE JACK 6000 OR HIGHER 6000 IMP LINES EFF 10dB 245V 8dB 1 9V PHONE JACK 600Q OR HIGHER 6000 IMP LINES GEQ 4dB 1 PHONE JACK 23V 20dB 7 75V 600Q OR HIGHER 6000 IMP LINES FB 44 1 23V 20dB 7 75V PHONE JACK 1kQ OR HIGHER 1kQ IMP LINES RECL amp R 10dB 7 75V 8dB 1 9V RCA PIN JACK 10kQ OR HIGHER 1002 IMP LINES TAPEL amp R POWER AMPLIFIER SECTION Frequency Response 0 IdB 5Hz to 40kHz 200W RMS 40 Rated Power
12. Fluorescent Bargraph Metering assignable Power Amp Protection Circuitry with indicator Complete patch Bay with Buss Link Aux Input with Stereo Balance and Level Controls assignable to PGM FB and Rec L amp R Busses Headphone Monitoring Cueing System Independent Stage Monitor FB Mix Each Channel Input Trim Control with LED peak indicator Pre EQ foldback send 3 Band EQ Post EQ recording level and pan controls Post reverb effects send Lo Z Balanced XLR Input Hi Z Unbalanced 1 4 Input Bow Stereo Cassette Recorder 1 Full Logic Cassette Mechanism Control dbx Noise Reduction System 3 Automatic Tape Selector with Indicator normal CrO Metal 4 Headphone Output with Level Control 5 Tape Transport Remote Control start stop 6 Tape Pitch Control 10 7 Zero Return with Automatic Cue 8 3 Digit Tape Counter Front Panel Input Secti Foldback Control FB 3 The Foldback control deter mines the level of signal assign ed to the foldback mixing buss thus setting the level of that channel in the on stage monitor mix High Equalizer Control HIGH EQ The high EQ control alters the high frequency response of the input channel providing 13dB at 10kHz and 15dBat 20kHz of continuously variable active shelving equalization The 0 detented position provides flat audio response Middle Equalizer Control MID EQ The mid EQ control provides
13. ause the tape to twist or break When necessary always take up slack by inserting a pencil or similar object into the reel hub and turning 2 Winding the tape too tightly on the reel may cause the tape to rotate unevenly in worst case the tape may bind and not wind from reel to reel Before using a tape again after continuous playback or recording lightly tap the cassette housing or both sides and if necessary rewind the tape in either the fast forward or re wind mode Storing Tapes Always store cassette tapes in their cases with a protective insert over the exposed portion of the tape ifnotavailable attach a stopper made from paperas stopper R shown in the illustration To prevent damage or degradation of recordings always store tapes in locations free from direct sunlight high temperature or humidity and magnetic effects from other electrical equipment speaker systems etc cotton swab R P head F Erasing head d 40204 capstain pinch roller 3 Clean the rubber parts of the transport assembly with cleaning fluid or alcohol and wipe dry with a clean soft cloth NOTE Ifa transport Lubricant ofany kindis used onthe metal parts take care to avoid contact with rubber parts CAUTION The tape heads and guides are carefully adjusted to ensure smooth and accurate tape travel during both recording and play back DO NOT USE EXCES SIVE FORCE when cleaning misalignment may result
14. ckwise Key Board in Musical Instrument Dynamic l0dBm level 20dBm level Microphone in 40dBm level Fault Protection Table Fault Protection Indication Action Restoration Excessive current due to overloads Current limiter activates at less than 1 ohm Compressor LED illuminates Remove excessive lords Minimum speaker loads 2 ohm Automatic restoration after normal loads are obtained Short circuits less than 0 4 ohm Current limiter activates input signal is lowered unit shuts down Amp protection LED illuminates Check speaker lines systems for shorts Turn off power switch Turn on into operational loads Temperature rise of heat sink more than 105 C Input signal is lowered Unit shuts down Amp protection LED illuminates Check for adequate ventilation Automatic restoration after temperature _lowers to 75 95 C Input signal is lowered Amp protection LED illuminates Refer to qualified service Automatic restoration after normal bias is DC drift Unit shuts down Recording Level Setting The following procedures are recommended for an accurate and high quality recording 1 Place the level meter selection switch in the Tape position 2 Engage the noise reduction circuitry by pressing the dbx switch NOTE Using the internal dbx circuitry will provide higher quality recordin
15. dynamic range we recommend the use of metal tape whenever possible SAVING YOUR RECORDINGS Cassette tapes are provided with two break out tabs as shown in figure To prevent accidental erasure or break out tab Side B break out tab Side A overtaping break the tabs with a screw driver or similar tool and remove You may cover the tab adhesive tape Maintenance of Stereo Cassette Mechanism Cleaning the tape heads NOTE Werecommendremovalofthecassettereceptacledoor prior to the cleaning operation this will facilitate easy access to all the inner workings ofthe tape transport assembly 1 The cassette door opens when the EJECT button is pushed After opening press the door downward see illustration to disconnect the top mounted cleaning cotton swab cassette door detents which hold the door to the chassis Now pull outward and away from the main assembly Place the door aside in a safe location for later cleaning CAUTION To prevent damage to the transport and head assembly use only cotton swabs or a soft cloth for the cleaning procedure 2 Using any good grade of commercially available tape cleaning fluid or an acceptable substitute such as alcohol thoroughly clean the tape heads tape guides and all other metal parts in the tape path 10 openings with adhesive tape ifyou desire to erase or record the tape at a later date Hints on Cassette Tape Handling 1 Tape Slack can c
16. eration unit The effects out jack should be connected to the input of the external effect unit Nominal output level is 104 with an impedance of 600 ohms Program Output Jack PGM The PGM Out jack is provided for connection to external equal izers and or power amps deriv ing its signal priorto the internal GEQ and power amp Nominal output level is 4dB with an impedance of 600 ohms The GEQ input jack allows the graphic equalizer to be used in dependently of the MCX 106 with other external equipment or the internal power amplifier and the graphic equalizer with external equipment When a plug is inserted the main mix from the program buss is discon nected from the graphic equal izer and the power amplifier The nominal input level is 4dB with an input impedance of 50k PWR The PWR Amp input jack allows the internal power amplifier to be used with external equip ment When a plug is inserted the power amp is automatically disconnected from the MCX 106 mixer section The nominal in put level is 4dB with an input impedance of 10k ohms Foldback Output Jack FB This jack is for connection to external power amplifiers and or equalizers for the on stage monitoring system Nominal output level is 4dB with an impedance of 600 ohms If the internal power amp and equal izer are to be used for the on stage monitor system the FB output should be connected to t
17. gnate as zero noise Zero Return Switch the zero function In the on r DBX Button Pressing this button alternately enables or disenables the inter nal dbx noise reduction feature in either the playback or recording modes Cue Button Pressing this button and the FAST FORWARD or REWIND button will rewind the tape to the next muted or unrecorded section tape silence of four seconds or more where the deck will automatically stop Level Meter Selector Switch The left position monitors the PGM and FB output levels the right position monitors the internal tape playback and recording levels TOA POWERED MIXE eirch CONTROL INTER ESET zero ON ori AUTOMATIC TAPE SELECTION MUTE PAUSE REC STOP REW PLAY FF O REC LEVEL t EILEEN T PGM FB OUT B EV SEF Mute Button Pressing and holding the mute button during tape travel while in the recording mode will provide a silent section on the tape for use with the cuing function releasing the button will restore selected recording levels It is essential that the muted section continue for at least four seconds to enable the cue function to operate cor rectly Pause Button This button i
18. gs with excellent signal to noise characteristics You will notice a drastic reduction in audible tape hiss and a significant increase in dynamic range However the dbx noise reduction is personnel regained an encode decode process meaning that any tape that is recorded with dbx must also be played back with dbx to obtain satisfactory results If the recording must be played on other equipment without dbx circuitry we recommend that the dbx feature not be used 3 Press the record button to place the deck in record pause mode 4 Adjust the L and R master recording level sliders to a level just below the red in the bargraph meters 5 Press PLAY button to begin recording Types of Cassette Tape Types of cassette tape micron 1 1000mm C 46 C 60 Type C 30 C 90 C 120 Tape travel hour 120 min 30 min 46 min 60min 90 18 micron 18 micron 18 micron 12 micron Tape thickness 9 micron CAUTION A C 120 tape is so thin that it can be easily stretched causing tape slack and possible entanglement around the pinch rollerand capstan We donotrecommendthe use of C 120 cassette tapes NOTE The MCX detects the type of tape Normal CrO Metal when the cassette is inserted and the door is latched automatically selects the proper EQ and bias settings and gives a visual indication on the front panel For highest quality recordings and extended
19. he GEQ input jack Graphic Equalizer Output Jack GEQ This jack allows the MCX 106 and the internal graphic equal izer to be used with an external power amplifier or in conjunc tion with the GEQ in jack to be used independently of all other MCX 106 circuitry Nominal output level is 4dB with an impedance of 600 ohms Program Buss Link Jack PGM 4dB22kQ Fold Back Buss Link FB 4dB 22kQ Reverb Effects Buss Link Jack EFF 4dB 22kQ Buss Link Jacks The buss link provides direct access to the PGM FB and ef fects mixing busses and is pro vided for easy input expansion with additional MCX 106 units or other auxiliary equipment All jacks have an input level of 4dB with an impedance of 22k ohms Rear Panel Power Switch POWER The power switch is a three position type with the middle position being the off position The MCX 106 should be operat ed in the switch position which produces the lowest amount of system hum Speaker Jacks SPEAKERS The speaker outputs are stand ard 1 4 phone jacks wired in parallel Speaker cables recom mend at least 18 gauge wire should be connected between the MCX 106 and the speaker systems prior to applying power to the unit Caution The MCX 106 should never be operated into less than a 2 ohm speaker load AC Power Cord The power cord is the three wire type with proper grounding faci lities Caution The ground pin should
20. ion Examples Low Z input should be connected with low impedance 50 ohm 600 ohm microphones WIRELESS TUNER SUCH AS WT 02 WT 06 KEYBOARD 00 OO00008 MU 0 t SICAL INSTRUMENT E it SUB MIXER MCX 106 Built in Power Amplifier for Foldback From Speaker Jack on Rear Panel MOTE paust MC Se 0000 _ X NM E pes UE nu ll E From Speaker Jack on Rear Panel Line Qut Line Out E zi MAIN SPEAKER SYSTEM CU TAPE DECK RES REMOTE CONTROL FOOTSWITCH Y 9 y HEAD PHONES z SPEAKER SYSTEM for foldback Input Connections CONNECTION AUX L 6 R EFF RET Generally speaking there are two rules to follow when connecting equipment outputs to the inputs of other equipment 1 Properly match the impedances of the outputs and inputs 2 Connect low impedance outputs to high impedance inputs It goes without saying that not only input and
21. is described in the beginning of the Operating Instructions Manual the connectors of the MCX 106 are wired as follows Pin 1 is ground shield Pin 2 is cold low minus Pin 3 is hot high plus How to get a good mix Before connecting other equipment to the Powered mixer check the impedance and level of both If the impedances and levels do not match mixing will be very difficult and the S N ratio will also be adversely affected Each input channel of the MCX 106 is provided with a TRIM control Thorough understanding of the function of a TRIM control will make mixing easier Trim Control HEAD AMP Input O The function of the TRIM control is to control the negative feedback volume of the head amp so that the gain of the head amp can also be changed Because of this enough dynamic range even for high level signals is ensured Also the S N ratio will be better by decreasing the gain of the head amp For example a keyboard a musical instrument and a dynamic microphone with output levels of l0dBm 20dBm and 40dBm respectively are connected to the MCX 106 If the trim control is set as shown in the left figure the input level controls can be set to the same position The input level controls are used in general between 6 and 8 The peak indicator LED illuminates if the head amplifier or equalizer is clipping The gain of the head amplifier must be decreased by turning the trim control counter clo
22. not be removed under any cir cumstances If the MCX 106 must be used without proper grounding facilities a suitable grounding adapter should be TOA POWERED MIXER MCX 106 model L Earth Terminal GND AC Fuse Cord Wrap The cord wrap is provided for convenient storage of the power cord when the MCX 106 is not in use Caution The power cord should always be completely removed from the cord wrap prior to operation of the unit This will insure maximum cooling of the MCX 106 For the same reason adequate clearance should be maintained between the rear panel and any other surface 4 6 inches should do The vents on the bottom and top of the MCX 106 are also provided for convec tion cooling These vents should be kept clear and open Failure to do so may cause thermal shut down of the unit utilized Operation of the MCX 106 with proper grounding techniques will result in less system noise and greatly reduc ed shock hazard Warning To avoid possible equipment damage and or per sonnel injury the fuse should always be replaced with same type and rating Using improper fuses will also void the warran ty The MCX 106 should always be disconnected from AC outlet prior to changing fuses If fuse repeatedly fails the unit should be referred to qualified service personnel lor repair Connect
23. output impedance matching but also level matching should be taken into consideration Each input channel of the MCX 106 is provided with an input TRIM control so the usable signal level range is very wide Input impedances and levels are shown in the following table INPUT SPECIFICATIONS SENSITIVITY PGM OUTPUT CLIP INPUT LEVEL 4dB LEVEL TRIM MAX BEFORE POSI TION FOR USE WITH NOMINAL ACTUAL LOAD IMPEDANCE CONNECTOR 50Q TO 2500 MICRO PHONES 50kQ OR LOWER IMP LINES 55dBm 1 38mV 34dBm 15mV 16dBm 123mV 1 7dB 0 94V XLR TYPE NC3F 35dBm 13 8mV 14dBm 150mV 4dBm 1 22mV 20dB 7 75V PHONE JACK PHONE JACK RCA PIN JACK 10kQ OR LOWER IMP LINES 10dBm 245mV 8dBm 1 9V 50kQ OR LOWER IMP LINES 20dBm 77 5mV 2dBm 0 61V PHONE JACK 10 0 50kQ OR LOWER IMP LINES 4dBm 1 23V PHONE JACK 10kQ OR LOWER IMP LINES 4dBm 1 23V PHONE JACK BUSS LINK PGM FB EFF 22kQ OR LOWER IMP LINES 4dBm 1 23 20 dBm 7 75V PHONE JACK Sensitivity is the level required to produce a program out level of 4dBm 0dBm is referenced to 0 775V RMS All XLR Type connectors are electronically balanced transformer less Phone jack is unbalanced If the line going from one piece of equipment to another is long more than 5m we recommend that balanced outputs be connected to balanced inputs As
24. r PGM mixing bus ses Auxiliary Input to Program Control AUX TO PGM This control sets the level ofaux input signal assigned to the program mixing bus and thus the level of the external aux source in the main mix Effect to Foldback Control EFF TO FB This control determines the level of reverb effects return signal assigned to the foldback mixing buss and thus the amount of effects in the on stage monitor mix Reverb Effects to Program Control EFF TO PGM This control adjusts the amount of reverb effects signal that is returned to the program buss and thus the level of reverb effects contained in the main sound system Reverb Effects Send Control REV EFF SEND This control adjusts the overall signal level of the effects mix that is delivered to the internal reverberation unit or to an external effects device through the effects output The send con trol works in conjunction with the REV EFF to PGM and the REV EFF to FB controls to set the overall level of reverb effects in the main and monitor sound systems J Reverberation High Equalizer Control REV HIGH EQ The high EQ control alters the high frequency response of the reverberation signal The 0 de tented position provides flat audio response Recordig Level Control EFF REC LEVEL This control sets the level of reverb or external effects in the recording mix via the effects return pan pot
25. s used to stop the tape travel temporarily during recording or playback Recording Button Pressing both the PLAY and this button puts unit in the recording mode eee Rewind Button Rewinds the tape at high speed Stop Button Stops the tape motion Fluorescent Bargraph Meter The high intensity meters enable visual monitoring of the output signals selected with the Level Meter Selector Switch Recording Level Sliders Sets the overall signal level of the stereo L and R recording busses during the recording process this includes the level assigned to the REC OUT jacks as well as the internal tape deck Fast Forward Button Advances the tapeat highspeed Playback Button This button is used to playback the tape nt Panel Patch Bay amp Buss Link r Graphic Equalizer Input Jack Effects Return Jack EFT RET GEQ Power Amplifier Input Jack The EFF RET jack is provided to connect an external effects device to the MCX 106 When a plug is inserted the internal reverberation unit is automati cally switched out of the MCX 106 circuitry being replaced by the external unit This jack should be connected to the out put of the external effects unit Nominal input level is 20dB with an impedance of 50k ohms Effects Output Jack EFF The EFF Out jack used in con junction with the EFF RET Jack allows use of an external effects device in place of the internal reverb
26. t nominal 20 dB level The jacks are wired with the cor responding L and R pin jacks in parallel When a plug is inserted in the phone jack the pin jack is automatically switched out of the aux input circuitry The aux input is intended primarily for external music sources such as cassette tape players radio receivers or record players NOTE A phonograph with magneticcartridgere quires the use ofa pre amp with RIAA equali zation Recording Output Pin Jack REC OUT The REC out pin jack derives its signal from the recording L and R mixing busses and is intended for connection to external re cording equipment Nominal output level is 10 dB with an impedance of Ik ohms Playback Output Pin Jack TAPE OUT The playback o ut pin jack obtains its signal from the internal tape deck Nominal output level is 0dB dB with an impedance of Ik ohms Power Amp Compression Indicator COMP The comp LED lights when the internal compressor is activat ed The compressor is provided to protect speaker systems by compressing the input signal level of the power amplifier when clipping occurs in the out put stage Frequent flashing of the LED is not reason for alarm However a constant or steady light indicates that the MCX 106 is being overdriven and that the internal power amplifier is pos sibly under powered or that application The output level of the MCX 106 should be decreas ed until the LED onl
27. tereo cassette deck designed to allow recording a live demo tape performing to pre recorded program material recording sound on sound with an external tape source and simultaneously performing as a six channel powered main sound system and a six channel independent monitor mixer The MCX 106 features six input channels a 300 watt power amplifier 9 band graphic equalizer automatic compressor reverb effect fluorescent bargraph meter power amplifier protection circuitry and a complete patch bay Each input channel features input trim control with LED peak indicator pre EQ foldback send 3 band EQ post EQ recording level and pan controls post reverb effects send Lo Z balanced XLR input and Hi Z unbalanced 1 4 input The built in cassette deck features full logic cassette mechanism control dbx noise reduction system zero return and cue functions automatic tape selector All these unique functions are integrated into a ruggedly construct and portable package offering unlimited applications for school church band performing group etc The MCX 106 is a first of its kind product providing such a wide variety of versatility eet v 10 11 12 Built in Stereo Cassette Recorder with micro processor control Six Input Channels 300 watt Power Amplifier 9 band Graphic Equalizer with Bypass Switch Auto Comp Compression Circuitry with LED indicator Reverberation Effect with 2 band dedicated EQ
28. th an input impedance of 50k ut level of 35dB when the trim control is set to I0 When a plug is insert ed into the high Z input the cor responding XLR connector is automatically switched out of ohms and an inp the input circuitry r Input Trim Control TRIM The input trim adjusts the gain of the head amp stage of the as sociated channel providing 39 dB of gain control When the trim control is set to the I0 position the nominal input levels of the low Z and high Z inputs are 55dB and 35dB re spectively At the 0 position the levels are 16dB and 4dB The trim of each channel should be adjusted so that the peak LED just begins to light or only flashes occasionally This will ensure lowest distortion levels and optimum signal to noise ratio Recording pan Pot REC PAN This control assigns the record ing signal from each channel to the recording L and R mixing busses At the center position the pan pot routes the signal equally to the L and R mixing busses Panning from one side to the other gradually assigns the input signal to either the record ing L or R mixing bus exclusive ly Recording Level JControl REC LEVEL This control adjusts the level of signal assigned to the tape deck via the recording pan pot and stereo L and R recording busses Rotating the control clockwise increases the amount of signal assigned to the recording LandR busses and thus the level of
29. that input in the recording mix Input Level Control INPUT LEVEL The level control provides con inuously variable adjustment cof the channel output to the program mixing buss thus de ermining the level of that channel in the main sound system mix Since the reverb effects signal is post this con rol an increase in the level of the channel s output will also result in a corresponding increase in he reverb effect of that channel The nominal level of the input level control is at the 10 posi ition Front Panel Output Section Aux Recording Balance AUX REC BAL This control adjusts the level balance of the aux in L and R signals routed to the L and R mixing busses At the center position the bal ance control routes the signal equally to the L and R mixing busses Auxiliary Input Recording Level Control AUX REC LEVEL This control sets the level of stereo L and R signal from an external source connected to the AUX INPUT assigned to the re cording busses via the AUX REC BAL control Auxiliary Input to Foldback Control AUX TO FB This control sets the level ofaux input signal assigned to the fold back mixing bus and thus the level of the external aux source in the on stage monitor mix NOTE If the aux source is a stereo L and R signal for example a stereo casset te player the L and R will be combined into one mono signal before assignment to either the FB o
30. y flashes intermittently r Foldback Master Control FB The FB master control adjusts the overall combined signal level of the six independent channel foldback sends and thus the level of the entire on stage monitor mix Program Master Control PGM The PGM control adjusts the overall combined signal level of the six independent channel level controls and thus the level of the main sound system Graphic Equalizer EQUALIZATION The graphic equalizer is 1 1 octave with 9 independent active bands filters providing 12dB of boost or cut at each center fre quency The 0 detented posi tion provides flat audio re sponse Graphic Equalizer In Out Switch IN OUT The in out switch enables com parison between a flat response out and the equalized response in The out position com pletely removes the equalizer from the MCX 106 circuitry Phones Level Control PHONES The phones level control adjusts both the recording L and R signals fed to the phones output and permits recording and playback monitoring Headphone Jack The headphone jack will accept any stereo headphone with 8 ohms impedance or higher Tape Deck Remote Control TAPE REMOTE This jack remotely operates the tape PAUSE function during recording or playback by means of a foot switch Power Amp Protection Indicator PROTECT The indicator LED lights if the power amplifier output is short ed if the
31. z 90 dB DBX IN IHF A Weighted Total Harmonic Distortion Less Than 3 at 0dB Bias Frequency 85kHz Erasure 70 dB at IKHz DBX is the registered trademark of DBX incorporated Specifications are subject to change without notice Q Characteristics Diagrams CASSETTE DECK PLAYBACK HH ERR ELLE MTE 20 100 1000 50 200 500 2000 5000 NORMAL TAPE 10000 20000 Hz 13 RECORDING PLAYBACK 5000 NORMAL TAPE 10000 20000 Hz Characteristics Diagrams HIGH Z IN TRIM MIN amp INPUT EQ a LLL Hi 10 20 50 100 200 500 1000 2009 5000 T0000 20000 Hz Frequency POWER AMP POWER BAND WIDTH 20 load 0dB 25 3 320W 40 load 0 29 5V 217W Output Level 100 Ik Frequency POWER AMP COMPRESSOR iv Output Voltage pe LLL 4 5 10 input Voltage GEQ
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