Aiphone BX-600 User's Manual
Contents
1. ES AIPHONE BX NOO I 0186 BX SERIES MIXER AMPLIFIER MODEL BX 300 30 watt BX 600 60 watt BX 1200 120 watt INSTRUCTIONS The BX series Mixer Amplifiers BX 300 600 1200 are designed for years of trouble free use in diverse commercial and industrial applications They incorporate the necessary features and functions needed for use in paging announcing intercommunication and background music systems in conjunction with Aiphone or other communication systems Overload protection circuitry prevents damage from either open or short speaker circuits with an attrac tive LED Peak Meter for visual output monitoring A switchable Manual Automatic Music Muting Circuit offers an adjustable music muting level for back ground music systems FEATURES Output Overload Protection Circuitry Attractive LED Peak Meter Convenient volume controls including a Master volume control and individual volume controls Individual Bass and Treble tone controls Unique Automatic Music Muting circuit permits adjusting the muting level Switchable to manual muting 19 rack mountable with handles Frequency response 50Hz 15KHz 1dB Low distortion Less than 1 THD at rated output Professional appearance WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE tup SPECIFICATIONS Models and Output Power Freq2. NAMES FUNCTIONS BX 300 1 Power Switch 2 Power Indicator LED 3 Overload Indicator LED 4 MIC 1 Input Phone Jack 6 Treble Tone Control 7 AUX PHONO Select Switch 8 Peak Indicator LED 9 MIC 1 Volume Control 10 MIC 2 Volume Control 11 MIC 3 PHONE Volume Control 12 AUX PHONO Volume Control 13 MASTER Volume Control 14 GROUND Terminal 15 MIC 3 Input Terminals 16 MIC 2 Input Terminals 17 AUTO MANUAL Muting Control Select Switch 18 Muting Level Control 232428 26 27 19 Low Impedance Output Terminals 20 AC Fuse 2A 21 AC Outlet Max 100W unswitched 5 Bass Tone Control o N 22 AC Power Supply Cord 23 PHONO Input Jacks 24 AUX Input Jacks 25 MIC 3 PHONE Select Switch 26 PHONE Input Terminals 27 Manual Muting Control Terminals 28 Constant Voltage Output Terminals 25 70 7V 44 is 16 1718 29 Line Output Jack 30 DC 13 2V Power Input Terminals J BX 600 1200 1 Power Switch 10 11 12 13 14 15 2 Power Indicator LED 3 Overload Indicator LED 4 BASS Tone Control 5 TREBLE Tone Contro 6 MIC 1 Input Phone Jack 7 AUX 1 Volume Control 8 AUX 2 PHONO Volume Control 9 AUX 2 PHONO Select Switch 10 PEAK Indicator LED 11 MIC 1 Volume Control 12 MIC 2 Volume Control 13 MIC 3 Volume
3. Control 14 MIC 4 PHONE Volume Control 15 MASTER Volume Control 16 GROUND Terminal 17 MIC 2 Input XLR Receptacle 18 MIC 4 Input Terminals 25 2627 2829 30 3132 33 19 MIC 3 Input Terminals 20 MIC 4 PHONE Select Switch 21 PHONE Input Terminals 22 AC Fuse 2 5A for BX 600 5A for BX 1200 DE os 23 AC Outlet Max 100W unswitched 24 AC Power Supply Cord j 25 PHONO Input Jacks 26 AUX 2 Input Jacks i 27 AUX 1 Input Jacks 28 AUTO MANUAL Muting Control Select Switch 29 Manual Muting Control Terminals 30 Muting Level Control 31 Line Output Jack 32 Low Impedance Output Terminals 33 Constant Voltage Output Terminals INSTALLATION Unpacking Upon receiving unit s please inspect for any damage incurred in transit If damage is found please notify your Aiphone Distributor or representative immediately Connections An AM FM tuner cassette player remote microphone chime or other high level signal source may be connected to high impedance inputs with a single conductor low capacitance shielded cable A high impedance microphone with a single conductor shielded cable of 30 to 60 10 to 20m length can be plugged into the MIC 1 input on the front panel Make certain that all input cables are kept away from speaker cables power cables and power trans formers Speaker cables must also be kept away from power cables Grounding the Unit
4. indicator is off otherwise recheck the output circuit Music Muting Control The voice activated microphone precedence control circuitry offers smooth and natural voice announce ment with reduced soft music in the background When announcements are made through microphones MIC 1 MIC 2 MIC 3 MIC 4 PHONE the electronic precedence control circuit automatically alternates the level of the background music AM FM radio broadcast music tape or other sources allowing you to make announcements which are clear and more attractive The level of the music source is automatically returned to normal when the announcements is finished The muting level is adjustable within a range from 3 to 40dB with MUTING LEVEL control located on the back panel The precedence control circuit can also be activated by an external dry contact The AUTOMATIC and MANUAL control mode switch is also located on the back panel MUTING LEVEL AUTO MANU O MANUAL MUTING MUTING LEVEL AUTO uM m MANU E EJ BX 300 BX 600 1200 CAUTION TO PREVENT ELECTRIC SHOCK DO NOT REMOVE CABINET NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL oX X ERK HR OX XX X 0X X X 0 We at AIPHONE are proud of our products Our designers and engineers strive to bring you the finest in sound equipment Each item has been carefully tested and inspected before leaving our factory Properly installed and used your A
5. The chassis of the unit must be grounded by using the GROUND terminal located on the back The amplifier must be connected to an earth ground such as a cold water pipe or a substitution of the ground If additional equipment is installed along with the amplifier make sure that the additional chassis are also grounded DC Power Connection only BX 300 The unit may also be powered by an external 12 volt battery or other direct current source with negative as ground Power connection is made at the DC terminal strip on the back panel Ventilation In order to offset the heat generated by the unit it is necessary to provide ample ventilation around the unit Avoid blocking or impeding the ventilation holes and slits on the unit Locate the unit where it is free from direct sunlight humidity dust circulation or vibrations to prevent any unnecessary problems INPUT CONNECTIONS Microphones Three microphone inputs on the BX 300 and four microphone inputs on the BX 600 and BX 1200 are provided They may be used with balanced or unbalanced high impedance 20K ohm or low impedance 200 ohm microphones An unbalanced microphone with 30 to 60 10 to 20m of cable may be used but results will depend on the microphone and its characteristics MIC 1 MIC 2 MIC 3 and MIC 4 The MIC 1 input is unbalanced high impedance and is provided with a 4 phone jack located on the front panel MIC 2 3 4 inputs are balanced
6. dicator 10 LEDs 20 18 15 12 9 6 3 0 1 3dB Protection AC line fuse Primary AC circuit Overload protection circuitry Built in Music Muting Level 3 to 40dB adjustable Connections Inputs WMI GAA he s er e aet E A i DR ds Phone jack front panel Mic 2 Canon XLR or Switchcraft C3F only BX 600 1200 MICS pu pet nS Screw terminals BOX 0 rm RCA Phono jacks PHONG a skid ee ta 09 XM Harare Na dac Xx p eR Screw terminals PHONO atenent eb oles meas Sele ose piene RCA Phono jack 2 Outputs ZH ID ONM see eee Eas deed TA Screw terminals 2040 4 VOIE a oie upa teret e erea Pediat E56 Screw terminals Line Output oee ayn eek E EE RUN LER Rd RCA Phono jack Others Manual Muting gs tiiaus cece eee rh Screw terminals DC 132 volt INpuls etna llle Screw terminals only BX 300 AC 120 volt output 2 prong AC outlet unswitched 100 watt Power Supply 110 120V AC 50 60Hz 13 2V 6 6A DC only BX 300 Power Consumption No signal Rated output BX 300 18W 155W BX 600 26W 190W BX 1200 32W 370W Ambient Temperature Range 14 F to 140 F 10 C to 60 C Dimensions W x H x D BX 300 19 x 3 x 10 9 16 482m m x 88m m x 268m m BX 600 19 x 54 16 x 10 9 16 482m m x 132m m x 268m m BX 1200 19 x 54 16 x 10 9 16 482m m x 132m m x 268m m Weight BX 300 17 8lbs 8 1 kg BX 600 25 5lbs 11 6 kg BX 1200 31 9lbs 14 5 kg SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
7. iphone sound system should give years of troublefree service We are pleased to offer the following warranty WARRANTY Aiphone warrants its products to be free from defects of material and workmanship under norma use and service for a period of one year after delivery to the ultimate user and will repair free of charge or replace at no charge should it become defective upon which examination shall disclose to be defective and under warranty Aiphone reserve unto itself the sole right to make the final decision whether there is a defect in materials and or workmanship and whether or not the prod f uct is within the warranty i This warranty shall not aoply to any Aiphone product which has been subject to misuse neglect ic accident or to use in violation of instructions furnished nor extended to units which have been E repaired or altered outside of the factory AY This warranty does not cover batteries or damage caused by betteries used in connection with the R product H This warranty covers bench repairs only and any repairs must be mede at the shop or place des E ignated in writing by Aiphone Aiphone wilf not be responsible for any costs incurred involving on site service calls b MAMMALIA 444133 14213 VEMAAA ALIO ATALAIA ELA E EALALI IM med 5 ECT d OX ME EUN Ve op AIPHONE INTERCOM SYSTEMS Aiphone Corporation Bellevue Washington 98005 BX NOO I 0186 Printed in Taiwan Qe
8. low impedance and all are located on the back panel Unbalanced High Impedance Microphone Use with single conductor shielded cable Unbalanced microphone Single pole phone plug ees J Balanced Low Impedance Microphone Use with two conductor shielded cable Balanced microphone MIC Input Terminal Canon XLR M Balanced Microphone Unbalanced Low Impedance Microphone Use with single conductor shielded cable Unbalanced Microphone Unbalanced Microphone MIC Input Terminal Canon XLR M Phonograph A magnetic phonograph cartridge may be connected to PHONO input A ceramic or crystal cartridge pick up may be connected to AUX AUX 1 or AUX input Use a single conductor or two conductor shielded cable and ground the separate ground wire from the player to GROUND terminal on the back panel Connect to the GND 4 NS terminal of the amplifier There are two PHONO jacks R and L provided for the connection with stereo player The R and L channels will be mixed automatically Auxiliary AUX AUX 1 amp AUX 2 An AM FM tuner tape player remote microphone chime mixer preamplifier or other high level signal sources may be connected to the AUX AUX 1 or AUX 2 input Use single or two conductor shielded cable From unbalanced type AUX AUX 1 2 output equipment LorR From Stereo Type Output equipment From balanced type AUX AUX 1 2 output equipment d LorR X y There are t
9. rectly matched to the output impedance of the amplifier for the most efficient transfer of power Be sure that total impedance of speakers is above 4 8 or 16 ohms However do not use a speaker rated at less power than the amplifier is capable of producing otherwise the speaker will be damaged 45 450 45 40 25 volts and 70 7 volts Output When it is desired to operate the speaker from a distance of over 200 60m from the amplifier and or the system requires more than four speakers it is recommended that line matching transformers be used for the speakers to prevent excessive line losses This method of load matching is known as the constant voltage distribution system and eliminates the calculation of load impedance and series parallel speaker arrangements In this method all speakers are connected in parallel These constant voltage outputs are most convenient for distribution of power when a number of speakers are installed Each speaker must have 25 volt or 70 7 volt line transformer with a tap that gives the power desired for that speaker The total number of power settings for all speakers should be equal to the amplifier power rating or less Cue CONGR Line Output To operate a booster amplifier or tape recorder use single conductor shielded cable with an RCA phono plug from the LINE OUT to the input of the booster amplifier or tape recorder This output is subject to all settings of each input gains master gains and
10. tone controls LINE OUT Et RM ew or tape recorder OPERATIONS Volume Control Setting For an average input signal the MASTER volume control should be set to the middle Relative to the other input levels it is recommended that the gains or losses be equally divided between individual controls and the master control Tone Controls The separate tone controls provide boost and alternation of bass and treble response The flattest res ponse is obtained when knobs are set to zero 0 Turn BASS control knob or TREBLE control knob clockwise to raise the appropriate tone level by approximately 10dB turn counter clockwise to lower tone level by approximately TOdB Peak Indicator Each of the LEDs of the PEAK INDICATOR Panel indicates output level When voice or music is amplified set the volume control knob at the position where the maximum out put level is below zero 0 PEAK INDICATOR O0O000000000 dB 20 18 15 12 9 6 3 O 1 3 dB Overload If the external load exceeds the rated power a protection circuit will respond and protect the amplifier immediately even if the load is short circuited The protective circuit will be activated by loading 1 5 times over the rated output power 10 When the OVERLOAD indicator is lit turn off the POWER and check the output circuit When proper operating conditions have been secured turn the POWER on and make sure OVERLOAD
11. uency Response BX 300 30 watt rms at 1KHz AC 120 volt 8X 600 60 watt rms at 1KHz AC 120 volt BX 1200 120 watt rms at 1KHz AC 120 volt 50 15 000 Hz 1dB Distortion Less than 1 THD at 1KHz rated output Inputs BX 800 sara cis ids Six inputs Four Channels Sensitivity Impedance Mic 1 3mV 50dB 20K ohm unbal Mic 2 0 5mV 66dB 600 ohm balanced Mic 3 0 5mV 66dB 600 ohm balanced K Selective inputs Phone 138mV 17dB 600 ohm unbal AUX 100mV 20dB 250K ohm unbal eene inputs Phono 2 5mV 52dB 50K ohm unbal BX 600 1200 Eight inputs Six Channels Sensitivity Impedance Mic 1 3mV 50dB 20K ohm unbal Mic 2 0 5mV 66dB 600 ohm balanced Mic 3 0 5mV 66dB 600 ohm balanced Mic 4 0 5mV 66dB 600 ohm E is n idis t Phone 138mV 17dB 600 ohm unbal gt cc ve Input AUX 1 100mV 20dB 250K ohm unbal AUX 2 100mV 20dB 250K ohm unbal Selective inputs Phono 2 5mV 52dB 50K ohm unbal Outputs 4 8 16 ohms 25 70 7 volts balanced Line output 1v 600 ohm Noise Level Master volume control at 0 Microphone pe Ren IFORITIBEY Les as RE Re nece 80dB below rated output ue ed 60dB below rated output 3 Gaited 74dB below rated output ins Tone Controls Bass us Lo MER tpe ate ale tad Leid 10dB at 100Hz ERED eyo ag th ite EI he sette nme CO ta ng ene 10dB at 10KHz Indicators 1 Power Lamp LED 1 Overload Lamp LED 1 Peak in
12. wo jacks R and L provided for connection with any stereo signal source The R and L channels will be mixed automatically Telephone A voice signal from the telephone system 600 ohm unbalanced may be connected to the PHONE input b Use single or two conductor shiel able g two conductor shielded cable PHONE PHONE From telephone system NOTE The following combination of two inputs cannot be used at the same time They are selectable using the select switches located on the front and back panel BX 300 Either MIC 3 or PHONE and AUX or PHONO PHONE AUX PHONO BACK PANEL FRONT PANEL y BX 600 1200 Either MIC 4 or PHONE and AUX 2 or PHONO PHONE BACK PANEL TFA A DllD SS AUX 2 PHONO m E AUX PHONE FT FRONT PANEL mesa M MICA i cH hg ax PRONO EEEE l 1 3 amp OUTPUT CONNECTIONS Speaker Output The amplifier may be used in conjunction with a speaker rated at 4 8 and 16 ohms or with balanced 25 volt or 70 7 volt constant voltage speaker systems Low Impedance Output 4 8 and 16 ohm The 4 8 and 16 ohm output terminals are provided for the connection of a few large output speakers l This applies when a constant voltage speaker system is unnecessary or in case the distance between the amplifier and the speakers is less than 200 or 60m it is requested that the total speaker load impedance be cor
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