Bogen C10 User's Manual
Contents
1. line cord terminated in a three prong plug The line cord should be plugged into a three wire grounded outlet providing a nominal 120 volt 60 Hz power source This will ground the amplifier as well as supply power to it It is important to ground the amplifier Therefore if a three wire Outlet is not available an adapter such as Leviton No 5017 should be used to convert a standard two wire outlet for use with three wire plugs The adapter is provided with a grounding pigtail which should be connected to the screw holding the wall plate to the receptacle In some areas the wall plate screw is not grounded In this case it will be necessary to connect a grounding wire from the GND terminal on the rear chassis uf the amplifier to a water or steam pipe LEAR SIEGLER INC PRINTED IN U S A 6 76 POWER OUTPUT 10 Watts FREQUENCY RESPONSE 80 to 10 000 Hz 2 dB HUM AND NOISE MIC Input 60 dB below rated output AUX Input 70 dB below rated output SENSITIVITY MIC Input 3 mV AUX Input 0 3V INPUTS 1 Hi Z MIC convertible to Lo Z balanced 150 200 ohms with T 1 accessory AUX Input Hi Z Provision for WMT 1 OUTPUTS Speaker 4 8 ail eaim 25 volt 62 1 ohms and 70 volt 490 ohms line Screw terminal strip for speaker terminals on connections TONE CONTROL ACTION TREBLE 10 kHz 11 dB CONTROLS Microphone Volume AUX Volume Treble SEMICONDUCTORS All Silicon 7 Transistors 4 Diodes POWER CONSUMPTION 46 W 122. 0 VAC 60 Hz DIMENSIONS 11 3 8 W x 2 7 8 H x 7 3 4 D WEIGHT 5 Ibs INPUT CONNECTIONS MICROPHONE Connect the microphone to the MIC receptacle on the rear panel The microphone should be of the high impedance ceramic or dynamic type Connect the microphone as shown in figure 1 The length of the interconnecting cable should be under 35 feet Where longer lines are necessary a low impedance microphone should be used along with Model IT 1 in line type microphone transformer MICROPHONE PRECEDENCE Microphone precedence may be accomplished by connecting the circuit shown in Hi Z A74 1769 0 Figure 1 Connecting Hi Z Mic BOGEN DIVISION 54 5615 05 PARAMOS X J 07632 10 WATT TRANSISTOR PUBLIC ADDRESS AMPLIFIER HI 2 MICROPHONE HURE 430 O EQUIVALENT AMPLIFIER MIC SWITCH OPDT Y ADAPTER SWITCHCRAFT NO 330 FI OR EQUIVALENT B74 17638 Figure 2 Microphone Precedence Circuit figure 2 The equipment consists of a microphone a Y adapter Switchcraft Part No 330F1 a single conductor shielded cable 20 feet maximum length and a SPDT switch If the microphone switch has an extra set of contacts for controlling an external circuit such as on the Shure Model 450 the SPDT switch is not required Plug the Y adapter into the AUX input jack on the rear of the amplifier Connect the program source and precedence switch to the Y adapter as shown in the figure Con
3. 25V OPERATION OR SELECTED IMPEDANCES ROSLI KS EE Figure 3 Speaker Output Plug Wiring When the speaker socket is used connect the wired plug to the socket Attach the impedance selector lead to the output terminal which corresponds to the speaker system impedance For 70 volt operation it is only necessary to connect the wired plug to the quick disconnect speaker socket leaving the impedance selector disconnected Note that the arrangement in figure 4 is for unbalanced speaker lines with the link between COM and GND closed For balanced lines open the link between COM and GND NOTE For balanced output lines remove the link between COM and GND output terminals If the line is shielded connect the shield to GND CONNECTING AMPLIFIERS IN SERIES Pairs of Bogen C10 amplifiers can be connected in series to effectively double the power output into the same speaker system See figure 4 far connection diagram Be certain to remove the link between COM and GND of amplifier No 2 Note that this arrangement is for unbalanced speaker lines For balanced lines also remove the link between COM and GND of amplifier No 1 The input cabling must be arranged to parallel the inputs of the two amplifiers and the volume and tone controls of both amplifiers must be at the same setting to assure that each amplifier will share the load equally AMPLIFIER GND COM AMPLIFIER 2 16 nL GND COM l6n 25V 20W AT4 2022 0 Figu
4. BO G EN Challenger Solid State Series MODEL CIO OPERATING AND INSTALLATION MANUAL TECHNICAL SPECIFICATIONS DESCRIPTION Bogen Model C10 is a fully transistorized public address amplifier rated at 10 watts The unit will accommodate one high impedance microphone and one auxiliary program source such as a tuner tape recorder or phonograph with ceramic cartridge Individual controls are provided for the microphone and auxiliary inputs along with a treble control for adjustment of tonal balance Balanced or unbalanced outputs are provided for 4 8 and 16 ohm speakers and 25 volt 62 1 ohms or 70 volt 490 ohms constant voltage systems A terminal strip with screw terminals allows convenient connection of speakers except 70 volt For 70 volt operation a quick disconnect speaker socket is provided The C10 operates from a 120 volt 60Hz source and has a maximum power consumption of 46 watts A thermostat enclosed in the power transformer protects the amplifier against overloads INSTALLATION UNPACKING The amplifier was carefully checked before leaving the factory Inspect shipping container and unit carefully for indication of improper handling if the unit has been damaged make an immediate claim to distributor from whom it was purchased or if the amplifier was shipped directly to you notify transportation company without delay and place your claim POWER AND GROUNDING The amplifier is furnished with an ac
5. c 1004F 50V C21 79 112 004 Capacitor Electrolytic 500uF 40V l 45 9915 Qi l x G j H CIN il 0 i l i l 3 nour l Ref No CR1 CR2 CR3 CR4 Q1 Q2 Q3 Q5 R4 Ril R12 R30 Q101 Q102 SW101 T101 T102 Part No 96 5193 01 96 5202 01 96 5333 01 96 5213 01 96 5314 01 96 5335 01 96 5346 01 96 5298 01 96 5283 01 96 5290 01 77 001 712 77 001 711 777 001 731 76 113 099 Description Diode 200 PIV 2A Diode HVR3 Diode 400 PIV 1A Transistor 2N5089 Motorola or Transistor BC149C Siemens or Transistor TP109C Sprague or Transistor BC239C Siemens Transistor SPS 1910 Motorola Transistor MPS A55 Motorola Transistor MPS A05 Motorola Control AUX Volume 2 Meg Controi MIC Volume AUX Vol ume 1 Meg Control TREBLE 1 Meg Resistor 0 27 ohm 5W Chassis Eloctrical Parts 96 5232 03 81 003 060 83 772 000 83 434 000 Transistor Switch Power Transformer Power with 110 degree thermostat enclosed in transformer Transformer Output Front Panel Parts 03 0651 01 Knob SPEAKET SERGE j avd 25 62 10 D man Djan Sjan DI com 1 UNLESS OTHERWISE SPECHIED REHETORS ARE tw CAPACITORS ANE W WFO Ei euina or ngsiwnge or bus ikc i SUC MEASURED TO GROUNO WITH VTM AND MAY VARY 220 Figure 5 Model C10 Amplifier Schematic Diagram S
6. ing with us give the model and series designation of your unit Describe the difficulty and include details on the electrical connections to associated equipment and list such equipment When we receive this information we will send you service information if the trouble appears to be simple If the trouble requires servicing we shall send you the name and address of the nearest Bogen authorized service agency to which you can send your unit for repairs When shipping your unit pack the amplifier well using the original shipping carton or a similar container and filler material lo prevent damage in transit Send the unit fully insured and prepaid via railway express Do not ship via parcel post unless so instructed The unit will be promptly repaired and returned to you express prepaid OVERLOAD PROTECTION The amplifier output is protected against overload and shorted speaker lines by a thermostat enclosed in the power transformer If the breaker opens the amplifier will have no output Set the ac power switch to off and wait a reasonable time fur the breaker to reset Return the ac power switch to on If the breaker trips again do not attempt to reset it but have the trouble investigated by a qualified technician REPLACING TRANSISTORS When replacing the output transistors clean all foreign matter from the heat sink insulator and transistor Brush a generous amount of silicon compound such as Dow Corning No 340 ta com
7. mplifier If this jack is being used for other sound inputs the WMT i may be connected to the MIC input In order to do this the WMT 1 wiring must be modified as described in the instruction sheet supplied with the WMT 1 MODEL BRC RECORD CHANGER This accessory is a 3 speed ac operated record player and automatic record changer A tone arm housing a dual stylus flip over cartridge for standard or LP records is furnished with the unit RPK 35 RACK PANEL The Bogen Model RPK 35 rack panel is designed to mount the amplifier in a standard 19 inch sound rack The rack panel is finished in gray enamel WMK 1 IN WALL MOUNTING KIT The Bogen Model WMK 1 In Wall Mounting Kit is designed to mount the amplifier flush in a wall Depth of the mounted unit is 34 inches IT 1 IN LINE MICROPHONE TRANSFORMER The IT 1 features full frequency response 20 20 000 Hz mag netically shielded matches 150 250 ohm microphones to Hi Z inputs The input connector is Cannon XLR 3 12 and the output connector is Switchcraft 250 1F MAINTENANCE CAUTION There are no user replaceable parts within the unit Have all internal servicing done by a qualified technician BOGEN SERVICE We are interested in your Bogen equipment for as long as you have it If trouble ever develops do not hestitate to ask our advice or assistance Information can be obtained by writing to Service Department Bogen Division P O Box 500 Paramus N J 07652 l When communicat
8. nect the microphone input to the MIC input jack PHONO Connect a phonograph with ceramic cartridge to the AUX jack using a single conductor shielded cable terminated in a standard RCA phono plug It is recom mended that a separate ground wire be connected between the phono player base and the amplifier GND terminal to minimize hum pick up TUNER TAPE ETC The AUX input may be used for sources other than a phonograph Any signal source having a highdevel 15 3V output may be connected to these inputs This includes such Bogen equipment as the Model BRC 3 speed automatic record changer and Model TP160 AM FM tuner l i OUTPUT CONNECTIONS SPEAKERS The amplifier may be used with speaker _ systems rated at 4 8 and 14 ohms and with 25 volt and 70 volt constant voltage systems For detailed information on the installation of multiple speaker systems refer to the Speaker Installation Bulletin no 54 5001 included oO In permanent installations where speakers will remain connected to the amplifier connect the speaker system directly to the Speaker Output terminals on the rear of the amplifier Connect one speaker lead to the COM terminal and the other to the terminal corresponding to the im pedance of the speaker system CAUTION To minimize shock hazard Class 1 wiring as defined in local building codes should be used for 70 volt outputs All other outputs may use Class 2 wiring FOR TON OPERATION i FOR
9. pletely cover both surfaces of the insulator Part No 16 9278 01 Place the insulator between the heat sink and the replacement transistor Use the original transistor mounting hardware to mount the replacement transistor CAUTION All transistors are soldered to ensure maximum reliability When soldering leads use a heat sink such as a small alligator clip between the transistor and the source of heat REPLACEMENT PARTS Most components are standard parts available through reputable parts jobbers The parts listed here may be obtained from Bogen distributors service agencies or directly from the factory When ordering a part specify a part number and description of the part as listed Specify the model of the unit and give the series designation which is a letter followed by numbers printed on the chassis For parts on circuit boards also give the component board assembly number which begins with 45 When replacing transistors use those made by the specified manufacturers Transistors from other suppliers may not be satisfactory Certain resistors must be Allen Bradley These are designated by AB on the schematic diagram Ref No Part No Description A1 COMPONENT BOARD ASSEMBLY PART NO 45 9915 01 C10 79 1 12 006 Capacitor Electrolytic 1000uF 55V C11 79 008 058 Capacitor Electrolytic 10uF 50V C12 _ 79 008 064 Capacitor Electrolytic 3304F 50V C16 C17 79 008 062 Capacitor Electrolyti
10. re 4 Connecting Amplifiers in Series OPERATION POWER The POWER switch on the front panei turns the amplifier ON or OFF MIC The MiC control on the front panel is used to adjust the volume of the microphone input Rotate the control clockwise to the higher numbers to increase volume Set the control to the minimum position 0 when the microphone input is not used AUX The AUX control adjusts the volume of the auxiliary input TREBLE Use the TREBLE control to adjust the tonal balance of the amplifier output The maximum clockwise position provides flat frequency response and counter clockwise produces high frequency attenuation This control can also be used to remove high frequency noise such as record scratch by rotating it in the counter clockwise direction ACCESSORIES WMT 1 LINE MATCHING TRANSFORMER The Bogen WMT 1 line matching transformer provides an impedance match between the amplifier and a O level 500 600 ohm line This may be a telephone line connected to the switchboard for internal paging or used with a wired music system No soldering is required to connect the WMT 1 to the amplifier To connect the input from a balanced 500 600 ohm telephone line mount the WMT on the rear panel of the amplifier using the holes indicated on the rear panel Connect the input line to the three screw terminal board on the WMT 1 Connect the phono plug on the WMT 1 cable to the AUX jack on the rear of the a
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