Valcom 2 Channel Mixer Specification

Issue 2

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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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

2

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.

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A connection is provided to add a remote volume control. This is a 2 wire connection using a 10K

Ohm linear potentiometer.

Speaker Connections

Connect Tip and Ring of Valcom Amplifed

Speakers to the output screw terminals located on the Main Mixer Module. Connect Tip and Ring of Valcom Amplified Paging Horns to horn audio output screw terminals.

When setting the system up, it is recommended that the master gain control be set 2/3 and aux volume controls be set to 1/4.

OPERATION

The V-9985, Four Channel Pre-Amp/Mixer actively mixes any signals present on the inputs.

Each input is equipped with its own volume control to allow blending of the input sources.

The unit also has a master volume control to allow a volume level adjustment of all mixed signals. Bass and treble controls allow up to

12dB of boost or cut at 50Hz and 10kHz.

An audio input is available on the main control module allowing connection of a low level signal that will override all other inputs. An option dip switch controls the override feature.

The integrated compressor feature is controlled by an option dip switch. Microphone and auxiliary inputs are routed through the compressor when the compressor is active.

Two outputs are provided by the V-9985 modular mixer.

An output to drive full range speakers

An output to drive limited range paging horns

TECHNICAL ASSISTANCE

When trouble is reported, verify there are no broken connections. Assistance in troubleshooting is available from the factory.

Call (540) 563-2000 and press 1 for

Technical Support, or visit our website at http://www.valcom.com.

Valcom equipment is not field repairable.

Valcom, Inc. maintains service facilities in

Roanoke, VA. Should repairs be necessary, attach a tag to the unit clearly stating company name, address, phone number, contact person and nature of the problem. Send the unit to:

Valcom, Inc.

Repair & Return Dept.

5614 Hollins Road

Roanoke, VA 24019-5056

Valcom, Inc. warrants its products to be free from defects in materials and workmanship under conditions of normal use and service for a period of one year from the date of shipment. The obligation under this warranty shall be limited to the replacement, repair or refund of any such defective device within the warranty period, provided that:

VALCOM LIMITED WARRANTY

1. inspection by Valcom, Inc. indicates the validity of the claim;

2. the defect is not the result of damage, misuse or negligence after the original shipment;

3. the product has not been altered in any way or repaired by others and that factory sealed units are unopened (a service charge plus

parts and labor will be applied to units defaced or physically damaged);

4. freight charges for the return of products to Valcom are prepaid;

5. all units 'out of warranty' are subject to a service charge. The service charge will cover minor repairs (major repairs will be subject to

additional charges for parts and labor).

This warranty is in lieu of and excludes all other warranties, expressed or implied and in no event shall Valcom, Inc. be liable for any anticipated profits, consequential damages, loss of time or other losses incurred by the buyer in connection with the purchase, operation or use of the product.

This warranty specifically excludes damage incurred in shipment. In the event a product is received in damaged condition, the carrier should be notified immediately. Claims for such damage should be filed with the carrier involved in accordance with the F.O.B. point.

Headquarters:

Valcom, Inc.

5614 Hollins Road

Roanoke, VA 24019-5056

Phone: (540) 563-2000

FAX: (540) 362-9800

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