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DESCRIPTION

The Model DA-4 is an Audio Distribution Amplifier with one audio input and four audio outputs. It receives line level audio signals from a Louroe base station or Louroe microphone and distributes it to up to four devices such as DVR’s, VCR’s, CCTV monitors with amplifiers or other audio devices that accept line level input (0dB @ 600Ω). Each output of the DA-4 has a gain adjust potentiometer for correcting audio level. Maximum gain is 15dB when potentiometer is fully engaged. Included with the DA-4 are five RCA connector cables and a 12Vdc power supply.

MODEL DA-4

AUDIO DISTRIBUTION AMPLIFIER

DA-4

INSTALLATION AND OPERATING INSTRUCTIONS6955 VALJEAN AVE, VAN NUYS, CA 91406

PH: (818)994-6498 / FAX: (818)994-6458 / [email protected]

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LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL (818) 994-6498 FAX 994-6458website: www.louroe.com e-mail: [email protected]

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AUDIO INPUT

GAIN ADJUST FOR AUDIO OUT #4AUDIO OUTPUT #4

POWER LEDGAIN ADJUST FOR AUDIO OUT #3

AUDIO OUTPUT #3

12 VDC POWER JACK

GAIN ADJUST FOR AUDIO OUT #1

AUDIO OUTPUT #1

GAIN ADJUST FOR AUDIO OUT #2

AUDIO OUTPUT #2

INSTALLATION AND OPERATION

Description of Functions

Fig. 1

I Connecting a Louroe microphone directly to the DA-4

(Refer to figure 3, page 5 of this instruction)

All Louroe microphones contain a 3-pin terminal block marked A, B, C

A = +12Vdc power red wireB = Audio Output black wireC = Ground bare wire

Microphone’s current drain is 4mA.

II Applying Power to the MicrophoneApply 12Vdc power to terminals A and C. A is positive and C is negative

III Microphone Connection to DA-4a. Referring to the microphone 3-pin terminal block, connect a 22 gauge shielded

cable to terminal B and a ground wire to terminal C. (Terminal C is common for both 12Vdc power and audio output).

b. Run other end of cable to DA-4 and solder to an RCA plug. Wire from terminal B of microphone goes to the tip of the RCA plug and ground wire goes to the sleeve.

c. Connect RCA plug to “Audio Input” RCA jack of DA-4

INSTALLATION AND OPERATING INSTRUCTIONS

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IV Connecting a Louroe Microphone to a Louroe Base Station and to DA-4a. If microphone is to be first connected to a Louroe base station, follow the instructions

that accompany the specific base station (APR-1) for making wiring connections b. For connecting base station to DA-4 use supplied RCA cable and go “Audio Out”

(RCA) of base station to “Audio Input” of DA-4

V Connecting DA-4 to Audio Receiving Devices (DVR, VCR, CCTV Monitor)a. The DA-4 has 4 RCA audio out jack. Using supplied RCA cables connect “Audio

Output” of DA-4 to Audio in (or line in) of the receiving device.

b. Apply +12Vdc power to DA-4 using the 120V/12Vdc power supply (included). Connect small 90° plug into the 12Vdc power jack located on DA-4. Connect the two-pin large plug to a standard 120 Vac wall outlet or power strip. The green power LED will illuminate.

c. Each of the four audio outputs has a gain adjust potentiometer. Using a small screw driver, the desired level of audio can be obtained by rotating clockwise to increase, or counterclockwise to decrease.

d. Microphone sensitive switch. Located on the backside of microphone is a sensitivity switch marked N (normal) and L (low). If application requires less microphone sensitivity, move slide switch to “L” position. This will lower the gain (-6dB output into 1KΩ).

NOTE: Should audio receiving device (DVR, PC soundcard module, etc.) contain a 3.5mm audio input ( or line input). Connect an RCA to 3.5mm adapter to the RCA plug and insert. Check specifications or DVR, etc. to determine if audio input is mono or stereo.

SPECIFICATIONSType of audio input connection (1)

Type of audio output connection (4)

Output

Maximum gain (per output)

RCA

Line Level (0dB @ 1KΩ)

+15dB

Power input 12 Vdc, 500mA

Dimensions

Weight (net), incl. power supply and cables

6 1/8”L x 4 5/8”W x 1 7/8”H

1.5 lb (0.7 Kg)

RCA


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LOUROE™MODEL DA-4

DISTRIBUTION AMP

AD-1 +12 VdcPOWERSUPPLY

DISTRIBUTIO

N A

MPLIFIER

E LO

UR

OE

LE

CT

RO

NIC

S

12 Vdc

DA

-4

AUDIO

OUT 1

TV MONITOR W/ AUDIO,DVR, VCR, ETC.

OUT IN

AUDIO

AUDIO

OUT 2 AU

DIO

OUT

3AU

DIO

OUT

4G

AIN AD

J 1G

AIN AD

J 2

GAIN ADJ 1

GAIN ADJ 2

GAI

N A

DJ

4G

AIN

AD

J 3

AUD

IO IN


OUT IN

AUDIO


OUTIN

AUDIO


OUTIN

AUDIO

NI

EU

D

S

A

A

M

+12 Vdc INPUT OUTPUTAUDIO

BA CMIC INPUT

VAN NUYS, CA

LN

A

BARE

A B C

VERIFACT A

L

N

BLACK

RED

LOUROE™ APR-1 BASE STATION

VERIFACT™ A MICROPHONE SHOWN

INDICATES AUDIO PATH

BARE

BLACK

RED

FIG 2

2 Conductor shielded cable, 22 gauge with a 24 gauge drain wire

NOTE: Unshielded cable is not satisfactory for audio systems

WIRING REQUIREMENTS

West Penn 452 or equivalent

INTERCONNECTION DIAGRAM

LOUROE MICROPHONE TO APR-1 BASE STATION TO MODEL DA-4 DISTRIBUTION AMP AND TO 4 RECEIVING DEVICES (CCTV MONITORS, ETC.)


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DISTRIBUTIO

N A

MPLIFIER

E LO

UR

OE

LE

CT

RO

NIC

S

12 Vdc

DA

-4

AUDIO

OUT 1


OUT IN

AUDIO

AUDIO

OUT 2 AU

DIO

OUT

3AU

DIO

OUT

4G

AIN AD

J 1G

AIN AD

J 2

GAIN ADJ 1

GAIN ADJ 2

GAI

N A

DJ

4G

AIN

AD

J 3

AUD

IO IN


OUT IN

AUDIO


OUTIN

AUDIO


OUTIN

AUDIO


VERIFACT™ D MICROPHONE SHOWN

GROUND (C)

AUDIO (B)B+ (A)

FIG 3

INDICATES AUDIO PATH

INTERCONNECTION DIAGRAM

LOUROE MICROPHONE DIRECTLY CONNECTED TO MODEL DA-4 DISTRIBUTION AMP AND TO 4 RECEIVING DEVICES (CCTV MONITORS, ETC.)

LOUROE™MODEL DA-4

DISTRIBUTION AMP


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NOTES

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IMPORTANT NOTICEWhen this equipment is used as part of an audio monitoring system, the law requires that the public be given notice of AUDIO MONITORING ON THE PREMISES. A decal notice is included with each microphone shipped.

Federal Law References:Federal Regulations, US Code, Title 18. Crime and Criminal Procedure, Sec 2510.

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AUDIO MONITORING

On These Premises

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WARRANTYLOUROE ELECTRONICS warrants that at the time of shipment products manufactured by LOUROE ELECTRONICS to be free of defects in material and workmanship. Should a defect appear within one year (12 months) from date of shipment, LOUROE ELECTRONICS will, at its sole discretion, repair or replace the defective equipment. This equipment shall not be accepted for repair or return without prior notification by LOUROE ELECTRONICS .

This warranty does not extend to any Louroe product that has been subjected to improper or incorrect installation, misuse, accident, or in violation of installation instructions provided by LOUROE ELECTRONICS.

Returned shipments to LOUROE ELECTRONICS shall be at customer’s expense. LOUROE ELECTRONICS will return the equipment prepaid via best way.

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MANUFACTURED

IN THE

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da 4 inst 5 11 - Louroe Electronics · PDF fileLOUROE ELECTRONICS 6955® VALJEAN AVENUE,...

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