Bogen WMA80 User's Manual
Contents
1. Level control for fixed microphone input channel PROJECTOR Level control for the fixed projector input MIC IN Professional 3 pin female connector provides a Lo Z balanced microphone input PROJECTOR IN 1 4 connector provides a Hi Z projector input for audio visual applications EQ FILTER 10 linear action filter controls provide 8dB at ISO centers of 125 200 315 500 800 1 2k 2k 3 1k 5k and 8k Hz AC BREAKER Press to Reset AC circuit breaker protects against excessive current flow REAR CHASSIS CONTROLS AND CONNECTORS Refer to Figure 2 INP OR edge connectors acce ug in modules OUTPUT TERMINAL STRIP Screw terminal strip for connection to direct and transformer coupled outputs Remove the link between the DIRECT terminal and OT IN terminal when using direct output LO CUT IN Provides 3dB attenuation 65Hz 6dB octave FILTER SWITCH OUT Bypasses Lo Cut filter action TONE CONTROL IN Enables EQ filter controls SWITCH OUT Bypasses EQ filter controls for flat response FIGURE 1 FIGURE 2 WMA 80 shown POWER The front panel mounted rocker switch applies power to the amplifier and illuminates when power is applied EQUALIZATION Equalizer filter controls are accessible by removing the front cover WMA D The equalizer provides 8dB at ISO centers of 125 200 315 500 800 1 2k 2k 3 1k 5k and 8kHz Response is flat at the center detent position CAUTION Removal of the front c2. input or 10 kilohm input Screw terminal connectors Line Output Module LO S Module provides jumper selected 600 ohm transformer bal anced 4dBm output or 0 5 watt direct output at 8 ohms May be used for line output from the D Series mixing buss or for music on hold applications Parallel RCA jacks permit one music source to be used for M O H and background music A jumper selected pad provides 20dB attenuation of the signal from the music source LEVEL control sets the module output level Output Selection Select DIRECT or XFMR coupled output by placing jumper 14 in the appropriate position When using the direct output connect the 8 ohm load between screw ter minals 1 and 3 When using transformer output terminal 1 is GND 2 is LO and 3 is HI Place jumper J2 in L O position for line output or in position for music on hold applications Connect the music source to the MUSIC IN RCA jack the MUSIC OUT jack is paralleled to allow same signal source to be used for back ground music Attenuator Pad Place jumper J3 in the 20dB position to at tenuate the signal connected to the MUSIC IN jack Bypass the pad by placing the jumper in the 04 position Tone Signal Generation Module TG S The module generates four distinct tones CHIME STEADY ALARM and BURST May be assigned to any of three levels of priority Requires customer supplied contact closure between the desired Tone and ENABLE screw terminal co
3. on modules so equipped to mid rotation To prevent damage to the modules or the amplifier be sure that the amplifier POWER switch 15 in the OFF position before installing or removing modules To install modules align the top and bottom edges of the module printed circuit board in the slots of the port and slide into the port to engage the edge connectors Secure the module with two screws Modifies set to priority level 1 receive and are muted by priority signals from any module set to priority level 2 or 3 Modules set to priority level 2 send priority signals to mute any modules sct to priority level 1 and receive priority signals from any module set to priority level 3 Modules set to priority level 3 send priority signals to mute modules set to priority level 1 or 2 Printed In Korea 9008 54 5887 03 1 8 INSTALLATION 1 INSTALL 88 5 BACK ON WALL MAKING SURE THAT THE BOX 18 SQUARELY MOUNTED ALLOW FREE ACCESS ABOVE BOX AC WIRING AND ABOVE OR BELOW BOX AUDIO WIRING 2 HAVE POWER WIRING RUN NEAR UPPER RIGHT HAND CORNER WHERE BOX WALL BE MOUNTED 3 SECURE BOX ON WALL WITH SCREWS THROUGH BACK HOLES 4 SCREWS BB F INSTALLATION PREPARE MOUNTING HOLE FOR BB F BACK BOX HOLE SIZE SHOULD BE 24 13 18 H X 14 5 18 W MINIMUM OPENING WITH STUDS OR MOUNTING SURFACES ON EACH SIDE HAVE POWER WIRING RUN NEAR UPPER RIGHT HAND CORNER WHERE BOX WILL BE MOUNTED INSTALL BB F BACK BOX IN WALL MAKING
4. 200 315 500 800 1 2k 2k 3 1k 5k and 8kHz tanida 55 00 a u T F MF J Inputs Low Z balanced microphone Hi Z Projector 6 input module ports Lo Gut Fitter Outputs Controls 305 65Hz octave Direct 4 ohms Transformer 8 ohms 25V 25VCT WMA 80 70V Level controls for channels 1 6 MIC PROJECTOR MASTER Volume 10 Equalizer fitter slide controls Illuminated POWER switch LO CUT filter switch TONE IN OUT switch Push to Reset circuit breaker Dimensions BB F Flush mount Box Surface mount Box 24 3 4 H x 14 1 4 W 3 7 8 62 8x36 2x9 8cm 26 3 4 16 1 4 W 3 7 8 D 67 9 41 3 9 8 WMA D Front Cover 26 3 4 H 16 1 4 3 4 D 67 9x41 3x1 l Power Required 120V 60Hz AC SOMMUNIGATIONG INC 50 SPRING STREET P O Box 575 RAMSEY NJ 07446 201 934 8500
5. BOGEN COMMUNICATIONS INC WALL MOUNT MODULAR AMPLIFIERS WMA 80 amp WMA 160 INSTALLATION AND OPERATION INSTRUCTIONS The Bogen WMA 80 and WMA 160 are professional quality wall mounting amplifiers suited for use in gymnasiums auditori ums and banquet rooms where inconspicuous permanent mount ing is desired Both models combine modular flexibility with power MOSFET performance and are available in flush mount or sur face mount configurations A locking panel on the front cover secures the unit when not in use and is designed so that it cannot be removed without access to the area behind the panel The WMA 80 and WMA 160 are rated at 80 and 160 watts respectively Each has 8 input channels a built in Lo Z mic rophone input with a 3 pin female connector a Hi Z Projector input with 1 4 connector and six module ports The ports accept any combination of the Bogen D Series plug in modules to define the function of each channel Inputs are mixed on an active buss allowing interaction for three levels of priority Modules set to priority level 1 are muted by modules set to priority levels 2 or 3 Modules set to priority level 2 mute modules set to level 1 and are muted by modules set to priority level 3 To obtain the best control over room acoustics the WMA _ Series features a 10 band graphic equalizer which provides 8dB at ISO centers of 125 200 315 500 800 1 2k 2k 3 1k 5k and 8k Hz Equalizer slide controls a
6. SURE THAT THE BOX SQUARELY MOUNTED AND THE FRONT SURFACE FLUSH WITH THE FINISHED WALL USE SHIMS IF NECESSARY ALLOW FREE ACCESS ABOVE BOX FOR AC WIRING AND ABOVE OR BELOW BOX FOR AUDIO WIRING SECURE BOX IN WALL WITH SCREWS THROUGH SIDE SLOTS 4 SCREWS WITH BOX POSITIONED INSTALL 4 ADDITIONAL SCREWS IN HOLES NEXT TO SLOTS gt gt BACK BOX INSTALLATION JUNCTION BOX WIRING 1 SUPPLY AC POWER TO UNIT THROUGH CONDUIT BX ROMEX IN ACCORDANCE WITH LOCAL ELECTRICAL CODES 2 SNAP AC RECEPTACLE INTO JUNCTION BOX GND PIN DOWN AND CONNECT WIRES AS SHOWN USING WIRE NUTS 3 88 INSTALL JUNCTION BOX IN BB F AND SECURE WITH 4 6 X 3 8 SCREWS BB S INSTALL JUNCTION BOX IN 8B 8 AND SECURE WITH 4 90 32 X 3 6 SCREWS AND NUTS PREPARATIONS i INSTALLING AMPLIFIER 1 RUN ALL AUDIO LEADS INTO WALL BOX THE PREFERRED ARRANGEMENT IS FOR OUT PUT LEADS TO ENTER THROUGH THE TOP AND INPUT LEADS TO ENTER THROUGH THE BOTTOM USE KNOCKOUTS AS NECES SARY MAKE SURE WIRES DO NOT REST AGAINST SHARP EDGES OF BOX 2 INSTALL HINGES PACKED WITH AMPLIFIER USING 6 68 3 8 SCREWS DO NOT INSTALL MIDDLE SCREWS OF LOWER HINGE USED FOR GROUND STRAP CONNECTION SEE D2 3 CHECK TO SEE THAT AC POWER IS AVAIL ABLE AT THE OUTLET D AMPLIFIER INSTALLATION 1 MOUNT AMPLIFIER ON BACK BOX BY ALIGN ING HINGE PINS AND LOWERING INTO PLACE CONNECT GROUND STRAP INSER
7. TING MIDDLE HINGE SCREWS THROUGH LUGS OF GROUNO STRAP AS SHOWN IN ILLUSTRA TION GROUND STRAP MUST BE INSTALLED FRONT PANEL MOU 1 MOUNT FRONT PANEL BUT DO NOT TIGHTEN WITH 4 98 32 X 3 8 SCREWS TOP AND BOTTOM OF PANEL 2 INSTALL 2 8 X 3 8 SCREWS ON INSIDE LIPS OF DOOR OPENING THEN TIGHTEN ALL MOUNTING SCREWS DO NOT OVER TO MEET UL REQUIREMENTS 3 MAKE NECESSARY INPUT AND OUTPUT CON NECTIONS CARE SHOULO BE TAKEN TO KEEP INPUT AND OUTPUT LEADS SEPARATED AS MUCH AS POSSIBLE 4 WITH POWER SWITCH TURNED OFF PLUG TIGHTEN AS U CLIP WILL STRIP CORD INTO SIDE OUTLET ON JUNCTION 3 CHECK TO SEE THAT DOOR OPENS AND BOX CLOSES CORRECTLY 5 TURN AMPLIFIER ON AND CHECK CONNEC TIONS 8 SECURE AMPLIFIER LISING 3 48 32 1 2 SCREWS MODULE SETUP FOR QUALIFIED SERVICE PERSONNEL ONLY Sound Reinforcement Modules MM F amp MM S Low impedance transformer balanced microphone preampli fier module with HIGH LOW CUT filters GAIN control 25dB range phantom power MM F has 3 pin female connector MM S has screw terminals Terminal 1 is GND 2 is LO and 3 is HI on all modules Phantom Power Move PHANTOM P S jumper to the ON position for 22V phantom supply Select OFF position to bypass Microphone Paging Module MP S Signal activated low impedance transformer balanced micro phone preamplifier module with HIGH LOW CUT filters GAIN control 25dB range Automatic Level Control ALC three leve
8. ion or service procedures other than that con tained in the Operating Instructions unless you are qualified to do so Refer ail servicing to qualified service personnel BACK BOX INSTALLATION A surface mount or flush mount cabinet is required for instal lation Follow the instructions on page 2 of this manual to install the surface mount BB S or flush mount BB F enclosure OUTPUT CONNECTIONS LOW CUT EQ DEFEAT The amplifiers provide a direct outpur at 4 ohms and trans former coupled 8 ohm 25V and 70V taps for use with distributed systems The WMA 80 includes a 25V center tapped output When using transformer coupled taps be sure that the link on the output terminal strip connects the OUTPUT TRANSFORMER IN terminal to the DIRECT terminal Remove the link when using the direct output A Low Cut filter switch located in the port cage reduces low frequencies when using transformer coupled outputs Set the switch to IN when using transformer coupled outputs and OUT when using the direct output The Tone Control defeat switch located in the port cage bypasses the amplifier s equalizer filter controls for a flat response Set the switch to IN to enable the equalization filters and OUT to hypass the filters MODULE INSTALLATION Before installing each module follow the instructions on page 3 of this manual to configure it for the desired function or priority level Set the HIGH LOW CUT filter controls and GAIN con trols
9. ls of priority and phantom power are jumper selected Screw terminal connectors Phantom Power Move PH P S jumper to ON position for 22V phantom supply Place jumper on either header pin to bypass ALC Move ALC jumper to ON position move to OFF to bypass Muting Priority using PRIORITY ASSIGN jumpers Level 1 Place one jumper in the 1 position and store the unused jumper on an empty pin Level 2 Place both jumpers in the 2 position Level 3 Place one jumper in the 3 position and store the unused jumper on an empty pin Telephone Paging Module TP S Signal activated telephone paging module provides a 600 ohm balanced input with 24dBm sensitivity for matching to telephone lincs Includes IIIGH LOW CUT filters and GAIN control 25dB range Automatic Level Control ALC and three levels of priority are jumper selected Screw terminal connectors ALC Move the ALC jumper to ON position to enable ALC move to OFF position to bypass Muting Priority using PRIORITY ASSIGN jumpers Level 1 Place one jumper in the 1 position and store the unused jumper on an empty pin Level 2 Place both jumpers in the 2 position Level 3 Place one jumper in the 3 position and store the unused jumper on an empty pin Auxiliary Input Module BL S Transformer balanced auxiliary input module suitable for line bridging or line matching Use the printed circuit board jumper to select either 600 ohm
10. nnectors Muting Priority using PRIORITY ASSIGN jumpers Level 1 Place one jumper in the 1 position and store the unused jumper on an empty pin Level 2 Place both jumpers in the 2 position Level 3 Place one jumper in the 3 position and store the unused jumper on an empty pin Remote Control Compression Module YC C Dual function jumper selected compressor remote volume control module The compressor limits the power amplifier input signal to 1 volt to prevent overdrive The DC operated full range volume control allows any output setting up to the maximum preset level of the MASTER control on the D Series unit Compression Set the PRE AMP LINK switch on the D Series unit to OUT position Connect the PREAMP OUT jack on the D Series unit to the VC C IN connector Connect the VC C OUT jack to the AMP IN connector on the D Series unit Place jumper J1 in the IN position to enable the compression func tion move to the OUT position to bypass Remote Volume Control Connect accessory RVC D to ter minals 2 and 3 FM Reception Module FM tuner module designed as preset background music source Screwdriver adjusted tuning The output is jumper se lected to the mixing bus of the D Series unit or to the module s RCA type connector May be configured to accept priority signals from other modules Monaural operation Screw terminals for antenna Output Place jumper J1 in OUT position to assign tuner ou
11. over presents an electrical shock hazard For this reason adjustment of equalizer filter slide controls should be performed by qualified service personnel only LEVEL CONTROLS The level of each channel is controlled by an individual CHAN NEL control The overall output level is controlled by the MASTER control The LED output meter will begin to illuminate red as the amplifier reaches full output power A constantly lit red LED indicates possible signal clipping AC CIRCUIT BREAKER If the AC circuit breaker trips the power switch pilot lamp will go out and there will be no output Place the POWER switch in the OFF position and reset the breaker by inserting a screwdriver into the hole the front panel and depressing the reset switch Once the breaker has been reset return the POWER switch to ON If the breaker trips again the difficulty must be investigated by a qualified service technician SPECIFICATIONS THERMAL BREAKER The thermal breaker opens when the temperature at the output transistor heat sink reaches 105 C 220 F If the breaker opens there will be no output but the power switch pilot lamp will remain illuminated Wait approximately two minutes for the breaker to reset If the breaker resets and then opens again arrange for qualified service personnel to investigate the cause of the tem perature overload This may be due to improper load connections or excessive environmental heat ambient air temperature abo
12. re located behind the front cover to prevent tampering after installation and setup A low cut filter 3dB 65 2 and tone control bypass switch are also provided and are located in the module port cage Individual level controls are provided for each channel A Master Volume Control sets the final output level A bar graph type LED output meter provides output level indication Power MOSFET output stages and protective circuitry provide performance and reliability and eliminate the need for output fuses and thermal fuse links A built in compressor circuit protects speakers drivers from damage by limiting the output of the pream plifier to 1 volt Bach amplifier has a direct 4 ohm output for use in professional applications plus transformer coupled 8 ohm and 25V and 70V outputs The amplifiers operate from a 120 volt 60Hz AC source A push to resct circuit breaker is included UNPACKING The amplifier was carefully checked before leaving the factory Inspect the shipping container and components for evidence of impropcr handling If thc unit has becn damaged placc an immc diate claim with the dealer distributor from whom the unit was purchased If the unit was shipped directly to you notify the transportation carrier without delay and file a claim 80 is UL listed INSTALLATION CAUTION These installation instructions are for use by qualified personnel only To avoid an electric shock do not perform any installat
13. tput to the module s RCA connector Place jumper J1 in MIX BUS position to assign module s output to the D Series mixing buss Mute Place jumper J2 in the ON position to mute FM T with any level 2 or 3 priority signal Place in OFF position to prevent muting from priority signals MIC Line Remote Control Module MR S impedance transformer coupled MIC preamp or line level module with HIGH LOW CUT filters GAIN control 25dB range phantom power Full range DC operated full range RVC allows any output setting up to maximum preset on amplifier channel control Screw terminal connectors Input Set Jumper JZ to MIC position for microphone input Set to LINE position for line level input Phantom Power Move jumper to ON position for 22V phantom supply Select OFF position to bypass Mute Place jumper J3 in the ON position to mute MR S with any level 2 or 3 priority signal Place in OFF position to prevent muting from priority signals RVC Connect accessory RVC D to terminals 1 and 4 PHYSICAL FEATURES FRONT CHASSIS CONTROLS AND INDICATORS Refer to Figure 1 ocker type switch illuminates wnen nas been applie LED LEVEL INDICATORS Bar type LED meter provides a graphic display of the output level illuminates red when levels above 0dB are reached to indicate possible signal clippin CHANNEL 1 6 Individual level controls for module input channels 1 through 6 MASTER Master control sets overall output level MIC
14. ve 40 C with inadequate ventilation SERVICE CAUTION There are user serviceable parts within the unit Refer all servicing to qualified service personnel If you experience difficulty with this unit do not hesitate to ask vur advice assistance Information can be obtained by writing to Service Department Bogen Communications Inc Box 575 Ramsey NJ 07446 Include the model number and series designa tion a letter followed by numbers stamped on the amplifier chassis of your unit Describe the difficulty and include details on the electrical connection to associated equipment We will send you service information if the trouble appears simple or the name and address of the nearest authorized Bogen Service agency to which you can send the unit for repairs When shipping the unit pack carefully Send the unit insured and prepaid via any responsible carrier The unit will be promptly repaired and returned collect freight prepaid while in warranty Output Power Rating WMA 80 160 80 Watts 4 ohms amp ohms 25V WMA 80 25V and 70V 160 Watts 4 ohms 8 ohms 25V and 70V Frequency Response 20Hz to 20kHz 0 2dB Distortion Direct 3 0 3 max Transformer 0 3 Input Sensitivity impedance Module Channels 100mV 10 kilohms Projector Input 100mV 10 kilohms Mic Input 300uV 300 ohms Equalization Hum amp Noise 75dB or better 898 ISO centers of 125
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