Valcom V-9975 Handleiding

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VSP-V-9975

Issue 4

1947006

V-9975

SEVEN BAND EQUALIZER

INTRODUCTION

These instructions contain the specifications and

information necessary to install, operate, and

maintain the V-9975, Seven Band Equalizer.

SPECIFICATIONS

Features

•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 output

Nominal 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 Hz

2 = 200 Hz

3 = 560 Hz

4 = 1100 Hz

5 = 2200 Hz

6 = 4500 Hz

7 =10000Hz

Power Requirements

•-24VDC

•150 mA

Dimensions/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-precipitating

OPERATION

The V-9975 is used to boost or attenuate specific

frequencies to improve voice intelligibility or

attenuate frequencies to help reduce feedback. The

unit can also be used to modify the frequency

response of speakers.

A "POWER" indicating LED, 7 slide controls (1 for

each of the bands), and an "EQ" bypass switch are

located on the front of the unit. The frequencies

boost/cut (1 to 12 dB), are modified with each filter's

slide control. The manual "EQ" bypass switch allows

comparison of before equalization, and after effect, in

the area being equalized. All frequency adjustments

are bypassed when the "EQ IN/OUT" switch is in the

"OUT" position.

INSTALLATION

Connections are accomplished utilizing (3) phono

jacks (2 input, 1 output) and/or (9) screw terminals.

Only qualified service personnel should install the

V-9975. See Figures 1 and 2 for actual connections.

After all connections are made and slide controls

adjusted to the desired positions, close security cover

and tighten locking screws. All connections should

be made and double checked before DC power is

supplied to the unit.

Product specificaties