Valcom V-9975 User Manual
Also see for V-9975: Datasheet
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VSP-V-9975Issue 41 947006V-9975SEVEN BAND EQUALIZERINTRODUCTIONThese instructions contain the specifications andinformation necessary to install, operate, andmaintain the V-9975, Seven Band Equalizer.SPECIFICATIONSFeatures• 7 active filters• Modified 1 octave equalization• + 12 dB boost or cut• Constant Q equalization• Power "ON" indicator• Bypass switch to remove EQ from circuit(slide type)• High impedance output• Line outputNominal Specifications• Type of Inputs:Hi impedance 10K Ohms (unbalanced)Stereo HiZ 10K Ohms (unbalanced)• Type of Outputs: Line (balanced)Hi impedance 10K Ohms (unbalanced)• Frequency Response: 35Hz-20kHz +1dB• Distortion: < 0.3%• Frequency Centers: Band 1 = 60 Hz2 = 200 Hz3 = 560 Hz4 = 1100 Hz5 = 2200 Hz6 = 4500 Hz7 =10000HzPower Requirements• -24VDC• 150 mADimensions/Weight• 5.7" H x 8.1" W x 2.5" D(14.5cm W x 20.6cm H x 6.4cm D)• 2.8 lbs. (1.27 kg)Environment• Temperature: 0 to 50 Degrees C• Humidity: 0-85% non-precipitatingOPERATIONThe V-9975 is used to boost or attenuate specificfrequencies to improve voice intelligibility orattenuate frequencies to help reduce feedback. Theunit can also be used to modify the frequencyresponse of speakers.A "POWER" indicating LED, 7 slide controls (1 foreach of the bands), and an "EQ" bypass switch arelocated on the front of the unit. The frequenciesboost/cut (1 to 12 dB), are modified with each filter'sslide control. The manual "EQ" bypass switch allowscomparison of before equalization, and after effect, inthe area being equalized. All frequency adjustmentsare bypassed when the "EQ IN/OUT" switch is in the"OUT" position.INSTALLATIONConnections are accomplished utilizing (3) phonojacks (2 input, 1 output) and/or (9) screw terminals.Only qualified service personnel should install theV-9975. See Figures 1 and 2 for actual connections.After all connections are made and slide controlsadjusted to the desired positions, close security coverand tighten locking screws. All connections shouldbe made and double checked before DC power issupplied to the unit. |
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