Louroe Electronics APR-1 User Manual

®

6955 VALJEAN AVE, VAN NUYS, CA 91406

PH: [phone] / FAX: [phone]

/ [e-mail]

APR-1

Audio Monitoring Base Station

APR-1

AUDIO BASE STATION

INSTALLATION AND OPERATING INSTRUCTIONS

DUAL RCA CABLE

AD-1

DESCRIPTION

Model APR-1 is a single zone non-alarming base station. As a system with Louroe Microphones, it provides one-way live
audio with a built-in 3” speaker. Unit contains input/output jacks for connection to a DVR or other recorders for recording
and audio playback. The APR-1 has a mute switch to mute the audio from the microphone as well as playback audio. The
microphone audio is still continuously being recorded even with the Mute switch ON. An overload led shows a short in
wiring connections.

Contents Description

U

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

AD-1 listed AC ADAPTER.

Dual RCA Cable RCA cable for connection to a

®

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

U

®

Supplies 12 Vdc to APR-1 and
Microphone.

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

Page 1 of 8

APR-1_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.

FRONT PANEL LAYOUT OF APR-1

[9]

POWER-VOLUME

[3]

MAX

[4]

MUTE

PLAYBACK

OVERLOAD

PWR

S

I

[5]

APR-1

MUTE

PUSH FOR

N

G

L

PLAYBACK

E

Z

O

N

E A

U

D

I

O

B

A

S

E S

TA

T

I

O

N

[6]

[7]

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 or lights (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 8W to

600W 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]

®

(818)

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

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APR-1_inst_2/15

REAR PANEL LAYOUT OF APR-1

+12 Vdc INPUT OUTPUT

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

INSTALLATION AND OPERATING INSTRUCTIONS

MIC INPUT

BA C

AUDIO

M

A

S

U

N

I

A

E

D

VAN NUYS, CA

[10] Power Jack Accepts 12Vdc 500mA. Model AD-1 Power Supply

(included with APR-1 Audio Base Station).

[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.

[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

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

APR-1_inst_2/15

INSTALLATION AND OPERATING INSTRUCTIONS

WIRING CONNECTION TO THE LOUROE MICROPHONE

All LOUROE microphones have either a terminal strip or terminal block
Marked A, B, C.

A = 12 Vdc Power
B = Audio Output
C = Ground

If using recommended wiring connect as follows:

1) Connect Red wire to terminal A of microphone

2) Connect Black wire to terminal B of microphone

3) Connect Bare wire to terminal C of microphone

WIRING CONNECTION FROM MICROPHONE TO LOUROE APR-1 BASE STATION

Bring other end of cable to the APR-1 and connect as follows:
On the back panel of APR-1 is a 3-pin terminal block A, B, C.[13]

1) Connect Red wire to terminal A of APR-1

2) Connect Black wire to terminal B of APR-1

3) Connect Bare wire to terminal C of APR-1

APPLYING POWER TO MODEL APR-1 BASE STATION

Supplied with the APR-1 is a 12Vdc, 500mA power supply. Connect the small end to the 12Vdc Power Jack[10]
located on back panel of APR-1 first, then connect the 2-prong end to a standard 110V outlet. This will power up
the APR-1 plus send 12Vdc phantom power to the microphone when the Power-Volume Switch is turned on.

System performs best when there is an acoustical barrier (such as a wall), between the microphone and APR-1.
If no barrier, then microphone should be 25’ minimum distance from the APR-1. This is to avoid acoustical
feedback. If closer, a headphone should be used.

CONNECTING A MICROPHONE FROM OTHER MANUFACTURERS TO THE APR-1

If microphone is a brand other than Louroe it must:

1) Operate on 12Vdc power

2) Produce Line Level output (0dB@600W)

NOTE: Microphones that produce mic level (-45dB) are not compatible with the

APR-1 Base Station

A. If microphone from other manufacturer requires power, refer to the microphone’s instructions for applying

power. For connecting microphone to the APR-1, there should be two connecting points on the microphone:

Audio Output
Ground

On the back panel of the APR-1 is a 3-pin terminal block marked A, B, C. Using a single conductor shielded

cable with a drain wire (ground wire)

1) Connect the shielded wire representing Audio Output of the microphone to terminal B of APR-1

2) Connect the drain wire representing Ground to terminal C of APR-1.
Terminal A of APR-1 is not used.

3) Using the APR-1’s power supply connect small end to the 12Vdc jack on APR-1 back panel and
the 2-prong end to a standard 110V outlet.

B. If microphone from other manufacturer is installed in a CCTV camera and draws power from the camera,

follow steps 1, 2 and 3 listed above.

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 4 of 8

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APR-1_inst_2/15

INSTALLATION AND OPERATING INSTRUCTIONS

INTERCONNECTION DIAGRAM

VERIFACT A MICROPHONE TO APR-1 BASE STATION TO DVR, VCR, ETC.

All Louroe Microphones

are compatible with the APR-1.

Verifact A Microphone

used as an example

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BACKSIDE OF

BACKSIDE OF

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VERIFACT A
MICROPHONE

MICROPHONE

A B CA B C

NN

LL

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WIRING REQUIREMENTS

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

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

+12 Vdc INPUT OUTPUT

AUDIO

REDRED

BAREBARE

BLACKBLACK

BLACKBLACK

REDRED

A

S

U

N

I

M

A

E

D

MIC INPUT

BA C

BAREBARE

VAN NUYS, CA

wire.

NOTE: Unshielded cable is not

satisfactory for audio
systems.

Rear Panel of APR-1 (Dual RCA included)

AC Adapter

AD-1

(Included)

“Audio In” of APR-1

connects to “Audio Out”

of DVR or other receiving device

(Red RCA plug)

“Audio Out” of APR-1

connects to “Audio In”

of DVR or other receiving device

(White RCA plug)

REAR PANEL OF DVR WITH

RCA TYPE AUDIO INPUTS

AUDIO INAUDIO 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.

AUDIO OUTAUDIO OUT

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]

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APR-1_inst_2/15

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 at a cash register checkout, microphone should be installed
closer to the customer rather than the cash register, as the drawer sound
could dominate the recording. It should be installed closest to the area to be
monitored and documented.

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

4.If microphone is installed in a police interview room, room should be
conditioned with any type of carpeting, acoustical ceiling tiles, acoustical
foam, etc. to reduce echo. This will enhance the quality of live and recorded
audio.

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. If no barrier, microphone should be at least 25’ from APR-1 to
avoid acoustical feedback.

INSTALLATION AND OPERATING INSTRUCTIONS

SPECIFICATIONS (Base Station - APR-1)

Monitor output power

Audio output impedance

Audio input impedance
Freq. response

Headphone impedance

Power supply
Dimensions

Weight
Shipping Weight

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

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
3 lbs

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APR-1_inst_2/15

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.

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

AUDIO

MONITORING

On

These Premises

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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 7 of 8

APR-1_inst_2/15

MANUFACTURED

IN THE

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 8 of 8

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APR-1_inst_2/15