Valcom V-9983, V-9985, V-9984 Instructions Manual

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V-9983 2 CHANNEL MODULAR PRE-AMP/MIXER

V-9984 REMOTE INPUT MODULE

V-9985 4 CHANNEL MODULAR PRE-AMP/MIXER

INTRODUCTION

These instructions contain the specifications and
guidelines necessary to install, operate, and
maintain the Modular Pre-Amp/Mixer. The unit
provides connections for up to 4 remote input
modules. The mixer consists of a V-9983 Main
Control Module and a V-9984 Remote Input
Module.

The Modular Pre-Amp Mixer is used with
Valcom distributed amplified one way paging
systems providing additional audio source
inputs.

The V-9985 provides active mixing for 1
balanced microphone and 2 auxiliary inputs.
Also supplied is an additional audio input
(building page) with an override feature. Up to 3
additional Remote Input Modules (V-9984) may
be connected to the Main Control Module. Each
Remote Input Module adds 1 Balanced
Microphone and 1 Auxiliary input.

Applications

Valcom, Inc. Distributed Amplified One-Way

Paging Systems. Refer to Figure 1 for a
block diagram of a typical installation.

Features

Main Control Module V-9983

High impedance auxiliary input
Volume control for auxiliary input

3.5mm stereo mini jack for auxiliary input
Master volume control
Up to (4) four remote mixer modules may be

connected
Separate outputs for Horns and Speakers
Page port connection (Building Page) with

override option switch
Remote Volume Control Connection
LED Signal Meter
Built–in Compressor, option dip switch

controlled

Power "ON" indicator
Mounts in 3 gang electrical box

MAIN CONTROL MODULE WITH
REMOTE INPUT MODULE

Remote Input Module V-9984

Balanced microphone
XLR Mic. Connection
Phantom power for electret microphones

(Switch controlled)
Phantom power “ON” indicator
High impedance auxiliary input
Volume control for auxiliary input

3.5mm stereo mini jack for auxiliary input
Power "ON" indicator
Mounts in single gang electrical box
Connects to Main Control Module with 2 pair

24AWG station cable
Screw terminals for distribution connections

Dimensions

Main Control Module

5"W x 4.25"H x 2”D

(12.7cm W x 10.8cm D x 5.08cm H)

4 lbs. (1.5Kg)

Remote Input Module

1.64W x 4.25"H x 2”D

(4.17cm W x 10.8cm D x 5.08cm H)
.25 lbs. (0.1Kg)

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947285

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Specifications

Outputs

Main Output: -10 dBm nominal, 100 Ohms
Frequency Response: 2Hz to 20kHz ± 1dB
Horn Output: -10 dBm nominal, 100 Ohms
Frequency Response 20Hz to 20kHz ± 1dB

(12 dB/Octave High pass at 300Hz)

Tone Controls

Bass (50 Hz) boost or cut up to 12 dB
Treble (10 kHz) boost or cut up to 12 dB

Signal to Noise

-80 dB from maximum output

Auxiliary Input Sensitivity

10mV RMS for -10 dBm output
Input Impedance: >40 kΩ

Bldg Page Input Sensitivity

30mV RMS for -10 dBm output
Input Impedance: >4 kΩ (balanced input)

Signal Meter

-10 dBm output lights first 5 LED's
3 dB per LED segment
Compression Ratio: 2.5 fixed
Attack: 1.5 Ms
Release: 0.3 seconds

Remote Volume Control

10 kΩ linear taper (gives audio taper)
One pair connection

Power Requirements

Voltage: 24VDC
Current: 50mA

Remote Module

Connections: 1 pair audio, 1 pair 24VDC

(From main control module)
Input Impedance: >4 kΩ (balanced)
Maximum Input: 1Vrms

Microphone Input

Input Sensitivity: 40uVRMS (-10 dBm out)
Max Input: 30mVRMS
Input Impedance: 3.5 kΩ Balanced

Signal to Noise

-65 dB from max output

Phantom Power

24VDC with 2.2 kΩ

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Auxiliary Input

Sensitivity

10mVRMS for -10 dBm output
Max Input: 1.4VRMS
Input Impedance: > 40 kΩ

Environment

Temperature 0 to 50°C
Humidity 0 to 85% non-precipitating

INSTALLATION

Figure 1 shows volume control locations,
microphone and auxiliary input connections.
Figure 2 shows output terminal strips and
switches on the back of the mixer. Figure 3
shows a typical connecting arrangement. The
V-9985 contains a Main Mixer Module and 1
Remote Module. Three additional remote
modules may be connected to the main mixer
module. Figure 4 shows other feature
connections. Figure 5 shows Remote Input
Module, Speaker and Power Connections.

All connections should be made to the mixer and
double-checked prior to connecting DC power.

Connect the microphone to balanced XLR cables
and the microphone XLR connector on the
Remote Input Module. If the microphone is a
condenser type it will require Phantom Power.

Turn “ON” the Phantom Power Switch located on

the Remote Module using a small scribe or paper
clip. The Phantom Power LED will illuminate.
The microphone volume control is located on the
remote module. Other sources such as CD and
MP3 players, tuners, and computer sound cards
may be connected to the auxiliary inputs located
on the remote and main modules. Volume
controls for the auxiliary inputs are located on the
remote input and main control module.

An additional audio input is available with a
volume control located on the PC board for
connection to a low level audio source such as a
telephone page port or Valcom One-Way Page
Control. An option dip switch located on the PC
board enables the input to override the
microphone and auxiliary inputs.

A compressor is available to even out a user’s
voice to compensate for poor microphone or
vocal technique and allow more microphone gain
before feedback. All auxiliary and microphone
inputs are routed through the compressor when
enabled. An option dip switch located on the PC
board enables the compressor.