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
1Verifact™ “A” Microphone
1APR-1 Audio Base Station
1Model AD-1 Power Supply
1Set of dual RCA Connector Cables
Verifact™ A
Microphone
ContentsDescription
U
APR-1 listed Audio Base Station.
Used for listening to live audio
Verifact™ A MicrophoneLine Level, Electret condenser
AD-1listed AC ADAPTER.
Dual RCA CableRCA cable for connection to a
®
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 (818) 994-6498 FAX 994-6458
[10] Power JackAccepts 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
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VAN NUYS, CA
[12] AUDIO OUT Jack (RCA) Provides audio output and connection to a DVR, VCR, etc.
[13] Audio Terminal BlockA 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 stereoAudio 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 (818) 994-6498 FAX 994-6458
Both the Verifact™ A Microphone and APR-1 Audio Base Station contain a 3-pin terminal block marked A, B, C.
A = 12Vdc PowerRed Wire
B = AudioBlack Wire
C = GroundBare 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 (818) 994-6498 FAX 994-6458
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
®
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 (818) 994-6498 FAX 994-6458