Louroe ASK-4, ASK-4 101 Installation And Operating Instructions Manual

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6955 VALJEAN AVE, VAN NUYS, CA 91406

PH: [phone] / FAX: [phone]

/ [e-mail]

ASK-4

AUDIO MONITORING SYSTEM

INSTALLATION AND OPERATING INSTRUCTIONS

#101

The ASK-4® 101 is a single zone audio monitoring system 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 omnidirectional pre-amplified microphone that
produces line level output.

CONTENTS OF ASK-4® #101

1 Verifact™ “A” Microphone
1 APR-1 Audio Base Station
1 Model AD-1 Power Supply
1 Set of dual RCA Connector Cables

Verifact™ A
Microphone

Contents Description

U

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

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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.

U

®

Supplies 12 Vdc to APR-1 and
Microphone.

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

POWER

-

VOL

UME

OFF

PWR

APR

MUTE

MAX

YBACK

PLA

OVERLOAD

SINGLE

-1

OR

MUTE

PUSH F

YBACK

A

PL

ZONE

AUDIO

B

ASE

ST

A

TION

TM

APR-1 Audio

Base Station

WIRING REQUIREMENTS

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

NOTE: Unshielded cable is not

satisfactory for audio
systems.

LOUROE ELECTRONICS 6 9 5 5 VALJEAN 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

DESCRIPTION

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

FRONT PANEL LAYOUT OF APR-1

[9]

POWER

-VOLUME

[3]

PWR

APR

MUTE

MAX

ACK

YB

A

PL

OAD

OVERL

SINGLE

[5]

[4]

MUTE

ZONE AUDIO

[6]

PUSH F
PL

B

[7]

-1

OR

ACK

YB

A

ASE

S

T

A

TION

TM

[8]

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]

®

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

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INSTALLATION AND OPERATING INSTRUCTIONS

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

A

E

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

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
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.

NOTE REGARDING INTERFACING ASK-4 KIT #101 WITH A DVR OR PC SOUNDCARD

The APR-1 Audio Base Station of ASK-4 Kit #101 is compatible with all commercial DVR’s and PC
Soundcards that accept line level input (0dB@600Ω). 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]

®

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

Page 3 of 8

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INTERCONNECTION DIAGRAM

VERIFACT™ “A” MICROPHONE TO APR-1 BASE

Terminal Block Identifier

for Microphone

(A) Red - 12Vdc power
(B) Black - Audio Output
(C) Bare - Ground

INSTALLATION AND OPERATING INSTRUCTIONS

STATION TO DVR, ETC.

A

C

B

VERIFACT A

N

A B C

L

WIRING REQUIREMENTS

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

NOTE: Unshielded cable is not

satisfactory for audio
systems.

AD-1

AC Adapter

120V/12Vdc, 500mA

+12 Vdc INPUT OUTPUT

AUDIO

A

S

U

N

I

M

A

E

D

MIC INPUT

BA C

Rear Panel of APR-1

“Audio In” of APR-1

connects to “Audio Out”

of DVR or other receiving device

REAR PANEL OF DVR WITH

RCA TYPE AUDIO INPUT

VAN NUYS, CA

“Audio Out” of APR-1

connects to “Audio In”

of DVR or other receiving device

AUDIO OUT

AUDIO IN

NOTE: If DVR’s audio input and output are 3.5mm (mini jack) type, use the appropriate adapter

at one end of RCA patch cable for connection. Check with manufacturer’s specifications
to determine if 3.5mm audio input/output is mono or stereo.

LOUROE ELECTRONICS 6 9 5 5 VALJEAN 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

WIRING CONNECTIONS AND TEST

Both the Verifact™ A Microphone and APR-1 Audio Base Station contain a 3-pin terminal block marked A, B, C.

A = 12Vdc Power Red Wire
B = Audio Black Wire
C = Ground Bare Wire

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

West Penn 452 or equivalent

1. Starting with the microphone, connect RED wire to Pin A, BLACK wire to Pin B and BARE wire to Pin C. Connect
other end of cable to Terminal Block on back panel of APR-1 Base Station matching RED wire to Pin A, BLACK wire
to Pin B and BARE wire to Pin C. Refer to drawing on page 4.

2. 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.

3. 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.

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

headphone.

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

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

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

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

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

10. Press Mute Switch[6] to mute audio heard on the speaker. 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.

INSTALLATION TIPS

1. Use overall shielded audio cable only. West Penn 452, Belden 8451 or equivalent.
UNSHIELDED CABLE IS NOT SATISFACTORY FOR SOUND SYSTEMS.

2. When used in cashier’s booth, microphone should be installed closer to the customer rather than the
cash register, as the drawer sound may dominate the recording. It should be installed closest to the
area that needs to be monitored and documented.

3. Avoid installing microphone near air vents, air conditioner, fans and other equipment that generate
high sound and air pressure.

4. If using a VCR, it may have both intermittent and constant speed playback. See VCR’s manual on
how to select constant speed.

5. The APR-1 and microphone should have a barrier or solid wall between them in order to avoid audio
feedback, especially when they are in close proximity to each other up to 25’ (7.6 m).

LOUROE ELECTRONICS 6 9 5 5 VALJEAN 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

NOTES

SPECIFICATIONS (Microphone - Model A)

Type
Output

Frequency response
Current drain
Supply voltage
Dimensions 4"Dia x 1 ½"H

Electret Condenser
Line Level 0 dB @ 1KΩ, unbalanced

40 Hz to 15 kHz ± 1 dB
4 mA
12Vdc

SPECIFICATIONS (Base Station - APR-1)

Input sensitivity (mic)
Monitor output power

Audio line output impedance

Audio input impedance
Freq. response

Headphone impedance
Universal power supply

Dimensions
Weight (shipping)

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 6 of 8

0.78V
1W@8
600Ω or higher

10K
100 Hz to 10 kHz

8 to 600
12 Vdc, 500 mA

8 ¼"L x 5 ¾”W x 1 ⅜"H

4 lbs. (1.8)Kg

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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]

®

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

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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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