Louroe Electronics ASK-4 601 User Manual

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6955 VALJEAN AVE, VAN NUYS, CA 91406

PH: [phone] / FAX: [phone]

/ [e-mail]

®

ASK-4

#601

AUDIO MONITORING SYSTEM

INSTALLATION AND OPERATING INSTRUCTIONS

Fig. 1

The ASK-4 601 is a single zone audio monitoring system with a wall mounted mute

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switch. This system is designed to interface with a DVR, VCR or other recording devices
that accept line level input. The APR-1 Audio Base Station contains a built-in 3” speaker
and volume control for producing live audio and audio playback. The Verifact A is an

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omnidirectional pre-amplified microphone that produces line level output. The MS-1 is an
illuminated mute switch that can mute microphone output to recorder and is commonly
used for interrogation rooms.

MS-1 Mute Switch

VERIFACT A

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APR-1 Base Station

AD-1

Contents Description

APR-1 listed Audio Base Station.
Used for listening to live audio

Verifact A Microphone Line Level, Electret condenser

AD-1 listed AC ADAPTER.

Dual RCA Cable RCA cable for connection to a

MS-1 Contains a built-in rocker

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U

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from microphone, as well as
audio playback from DVR’s, VCR’s
or other audio devices.

microphone with preamp. Picks up
normal sounds within 30’ circle.
May be located Up to 1000’ from
APR-1 Base Station. listed

U

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Supplies 12 Vdc to APR-1 and
Microphone.

DVR/VCR or other Audio devices
that accept line level input
(0dB @ 600Ω).

U

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DUAL RCA Cable

WIRING REQUIREMENTS

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

NOTE: Unshielded cable is not

satisfactory for audio
systems.

switch mounted to a single gang
stainless steel face plate.

LOUROE ELECTRONICS 6 9 5 5 VALJEAN AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

website: www.louroe.com e-mail: [e-mail]

Page 1 of 8

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ASK4_601_inst 2/15

INSTALLATION AND OPERATING INSTRUCTIONS

DESCRIPTION

THE APR-1 IS SHOWN BELOW. ALL CONTROLS ARE LOCATED AT THE FRONT PANEL. ALL CONNECTIONS ARE
MADE AT THE REAR PANEL.

Fig. 2

FRONT PANEL LAYOUT OF APR-1

[9]

POWER-VOLUME

[3]

PWR

APR-1

MUTE

MAX

PLAYBACK

MUTE

S

INGLE Z

[6]

PUSH FOR
PLAYBACK

ONE

AUDIO

BAS

E

S

TATI

ON

[7]

TM

[8]

OVERLOAD

[5]

[4]

OFF

[1]

[1] Power-Volume Turns “ON” power to the unit and controls the audio volume

through the Speaker[9].

[2] Power Indicator Lights (green) when the power is present to the unit.

[3] Mute Indicator Lights (orange) when Mute Switch[6] is pushed in. Audio is muted.

[4] Playback Indicator Lights (yellow) when Push for Playback[7] is pushed in to “ON” position.

[5] Overload Indicator Flashes (red) when there is a short in the power supply.

[6] Mute Switch Used to mute the audio on both live and playback mode.

[7] Push for playback Used for DVR/VCR playback. May also be used to listen to audio from an

external source. Press switch to listen to playback. Switch must be “OUT”
or “OFF” when monitoring and recording, otherwise live audio is muted.

[2]

[8] Headphone Jack Used for private listening. Any 3.5mm stereo headphone with 8Ω to

600Ω impedance can be used.

[9] Speaker (3”) Provides live audio. Muted when a headphone is connected to

Headphone Jack [8].

LOUROE ELECTRONICS 6 9 5 5 VALJEAN AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

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Page 2 of 8

ASK4_601_inst 2/15

INSTALLATION AND OPERATING INSTRUCTIONS

Fig. 3

REAR PANEL LAYOUT OF APR-1

MIC INPUT

BA C

+12 Vdc INPUT OUTPUT

AUDIO

M

[10] [11] [12] [13]

[10] Power Jack Accepts 12Vdc power from Model AD-1 Power Supply

(included with APR-1 Audio Base Station). AD-1 has a 90° 2.1mm female plug.

[11] AUDIO IN Jack (RCA) Accepts audio playback from an external source (DVR/VCR).

Audio playback is produced through the speaker. The Push for Playback[7]
must be “IN” during audio playback and “OUT” when
not used for playback.

A

S

U

N

I

E

A

D

VAN NUYS, CA

[12] AUDIO OUT Jack (RCA) Provides audio output and connection to a DVR, VCR, etc.

[13] Audio Terminal Block A 3-pin terminal block marked A, B, C.

Accepts wiring from the remote Louroe™ Microphone.

A is 12Vdc Power
B is Audio
C is Ground

SENSITIVITY SWITCH OF VERIFACT A MICROPHONE

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For special installations that require less microphone sensitivity or where there is background noise, a sensitivity switch is
mounted to the microphone pre-amp (PC Board) and has two positions, N and L:

N represents normal sensitivity (0dB ouput into 1kΩ)
L represents low sensitivity (-6dB output into 1kΩ)

Louroe VERIFACT microphones are always shipped with the sensitivity switch in normal (N) position. Do not change

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unless necessary. To change the sensitivity setting, use a small screwdriver and move slide switch from N to L position.
The switch is mounted on the back side of the microphone housing.

INTERFACING ASK-4 KIT #601 WITH A DVR OR PC SOUNDCARD

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The APR-1 Audio Base Station of ASK-4 Kit #601 is compatible with all commercial DVR’s and PC

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Soundcards that accept line level input. An RCA cable is included with the kit for connecting Audio Out to
Audio In of DVR. If DVR’s audio input is a 3.5mm jack, an RCA to 3.5mm adapter (not supplied) must be

attached to the plug that connects to DVR’s Audio Input. Check with DVR’s specifications to determine if the
audio input requires a stereo or mono 3.5mm plug.

PC soundcards contain a standard 3.5mm stereo Audio Input or Line Input. Do not use Mic Input of
soundcard. Louroe microphones are line level (0dB@600Ω) and will overdrive the Mic Input. Use “Audio

Input” or Line Input” of the soundcard.

LOUROE ELECTRONICS 6 9 5 5 VALJEAN AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

(818)

website: www.louroe.com e-mail: [e-mail]

Page 3 of 8

ASK4_601_inst 2/15

INSTALLATION AND OPERATING INSTRUCTIONS

INTERCONNECTION DIAGRAM

Fig. 4

VERIFACT A MICROPHONE TO MS-1 AND APR-1 BASE STATION

B

C

A

MS-1

Mute Switch

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WIRE NUT

A B C

Gain adjust switch

N

L

VERIFA C T A
MICROPHONE

(factory set)

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MICROPHONE

All Louroe microphones

WIRING REQUIREMENTS

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

NOTE: Unshielded cable is not

satisfactory for audio systems

are compatible with the MS-1

Model Verifact A is shown

as an example

A B C

TERMINAL
BLOCK OF

VERIFACT A

West Penn 452 or equivalent

Refer to Louroe Base Station

or

Audio Interface Adapter

Installation and operating

instructions

www.louroe.com

Terminal Block of

Louroe APR-1 Base Station

A

B

C

Audio Interface Adapter

LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

or

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website: www.louroe.com e-mail: [e-mail]

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INSTALLATION AND OPERATING INSTRUCTIONS

WIRING CONNECTIONS AND TEST

1. Starting with the microphone, using recommended cable, connect RED wire to Pin A, BLACK wire to Pin B and BARE

wire to Pin C. Connect the other end of this cable to MS-1. Connect RED wire from microphone terminal A to
terminal B of the MS-1. Connect bare wire from terminal C of microphone to terminal C of MS-1. Refer to drawing on
page 4.

2. Using another similar cable, connect the APR-1 Base Station to the MS-1. Connect RED wire from terminal A of MS-1
to terminal A of APR-1 base station. Connect the BARE wire from Terminal C of the MS-1 to terminal C of the base
station. Connect the BLACK wire from the terminal B of the base station directly to terminal B of microphone or splice
the cable at the MS-1 using wire nut as shown in the diagram.

4. Plug AD-1 power supply (AC Adapter) into the Power Jack[10] located on back panel of APR-1 first. Then connect 2-

prong block into standard 110/120 AC wall receptacle or power strip.

5. Turn “ON” power to APR-1 by rotating the Power-Volume Knob[1] clockwise. The green PWR[2] LED will illuminate.
Adjust volume of audio by rotating the knob either clockwise to increase or counterclockwise to decrease. Locate
microphone so as not to create feedback with the APR-1. The further the microphone is from the APR-1 the less
feedback it generates. System works best if there is an acoustical barrier between the microphone and the
APR-1, such as a wall or room divider. If there is no wall or barrier, microphone should be mounted at least 25 ft.
from the APR-1 Base Station.

6. Listen to the audio at the base station by turning ON the rocker switch of the MS-1. Audio should be heard at the
base station. Turn OFF the rocker switch of the MS-1. No audio should be heard at the base station.

7. Plug headphone into the Headphone Jack[8]. Speaker[9] output is muted and sound is transmitted through the

headphone.

8. Using the dual RCA cable (supplied), connect DVR/VCR’s AUDIO OUT jack to APR-1’s AUDIO IN Jack[11].

9. Connect DVR/VCR’s AUDIO IN jack to APR-1’s AUDIO OUT Jack[12].

10. Press “REC” on the recording device and record live audio for several minutes.

11. Press Push for Playback Switch[7] to “ON” position. Playback Indicator LED[4] will illuminate yellow.

12. Press “PLAY” on the DVR/VCR to playback recorded audio from the APR-1.

13. Press Mute Switch[6] to mute the audio on built in speaker while allowing audio to be output to a recorder. Mute

Indicator LED[3] will light and no audio can be heard on the speaker on both live and playback audio. When Mute
Switch[6] is ON Playback Indicator LED[4] will not light even when the Push for Playback Switch[7] is pushed in

and the audio is muted.

LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

website: www.louroe.com e-mail: [e-mail]

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INSTALLATION AND OPERATING INSTRUCTIONS

SPECIFICATIONS (Microphone - Model A)

Type

Output

Electret Condenser
Line Level (0 dB 600W @ 1 kHZ)

Frequency response
Current drain

Supply voltage
Dimensions

Weight

50 Hz to 15 kHz
10 mA

12Vdc
4"Dia x 1 ½"H

3.5 oz

SPECIFICATIONS OF MS-1 MUTE SWITCH

Supply Voltage

Dimensions

Faceplate

Backbox Single gang electrical

Weight, net

12Vdc

2 ¾ W x " 4 ½" H

303 Stainless Steel

box (not included)

2.5 oz

SPECIFICATIONS (Base Station - APR-1)

Monitor output power

Audio output impedance

Audio input impedance
Freq. response

Headphone impedance

Power supply
Dimensions

Weight
Shipping Weight of kit

1W@8

600W @ 1kHz

10K
100 Hz to 10 kHz

8 to 600
12 Vdc, 500 mA

8 ¼"L x 5 ¾”W x 1 3/8" H
1 lb 6 oz
4 lbs

LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

website: www.louroe.com e-mail: [e-mail]

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INSTALLATION AND OPERATING INSTRUCTIONS

IMPORTANT NOTICE

When 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.

AUDIO

MONITORING

On

These Premises

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

LOUROE 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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WARRANTY

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LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

(818)

website: www.louroe.com e-mail: [e-mail]

Page 7 of 8

ASK4_601_inst 2/15

MANUFACTURED

IN THE

LOUROE ELECTRONICS 6 9 5 5 VA L J E A N AVENUE, VAN NUYS, CA 91406 TEL [phone] FAX [phone]

®

website: www.louroe.com e-mail: [e-mail]

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