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1
L.O.C.PRO™ LP3-2
Line Output Converter
Before You Start
Replacing your radio? PAC also produces RadioPRO
™ which is a radio replacement solution, with steering wheel
control retention built-in. This greatly expedites the installation of a new radio into your vehicle.
To see if there is a RadioPRO
™ interface for your vehicle, visit www.pac-audio.com and search "Radio PRO".
Installation Instructions
The professional way to integrate
your new amplier.
General Overview
Install It Right with L.O.C. PRO™
Don’t cheat yourself out of all the performance your new radio or amplier can deliver. Proper audio line level
matching is critical when replacing your vehicle’s factory (OEM) radio or amplier. It can be the difference
between a great sounding system that you enjoy every day and a buggy, noisy mess that drives you crazy.
PAC L.O.C.PRO™ interfaces have been professionally designed for those who want the very best.
The L.O.C.PRO™ LP3-2 can be used for adding ampliers to a system that does not have RCA outputs. Level
matching is achieved using precision stereo gain dials and will enable proper adjustment of audio output of the
radio for optimum system performance. Included in these instructions are the most common applications for the
L.O.C.PRO™ LP3-2.
For specialty applications not covered in this manual, please visit www.pac-audio.com for more comprehensive,
vehicle specic wiring diagrams.
Direct url - www.pac-audio.com/products/locpro
Speaker Level Input to RCA Level Output
Speaker level input to RCA level output is the most commonly used scenario for the LP3-2.
Use this when you need to create RCA level outputs from a source that only has speaker level outputs.
The RCA input connectors on the main harness will not be utilized for this type of installation, we suggest
cutting them off the harness 3 inches from the RCA end so they can be saved and used for a future installation.
After all the connections are made, skip to the level adjustment section of this manual.
Copyright 2013 Pacic Accessory Corporation. Content subject to change without notice.
Front Right Audio Input
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Audio Ground Input -
Audio Ground Input -
Front Le Audio Input -
Front Le Output
Front Right Output
(OPTIONAL)
(OPTIONAL)
Note: If using large RCA connectors that are difcult to insert into housing, unsnap the
L.O.C.PRO™ cover and remove end panel insert around RCA outputs.
2
Pacic Accessory Corporation
Santa Ana, CA 92705
techsupport@pac-audio.com • www.pac-audio.com
Copyright 2013 Pacic Accessory Corporation. Content subject to change without notice.
Level Adjustment
New School –
Required items: Digital Multi-Meter, Test track media @ 1kHz and 100Hz. Max Amplier Line-level Input Voltage Specication (i.e., 4vrms, 8vrms, etc.)
Proper level adjustment is crucial for obtaining the best possible sound quality. Following the guidelines below will enable you to properly set the
output gain of the LP3-2 using equipment that is readily available. Although this device can be set by ear (Old School), we recommend using a multi-
meter and test tracks for pinpoint accuracy and the least chance of noise.
Ampliers usually have 2, 4 or 8v max line-level input ratings but this can vary.
This max line-level input will be your target setting you will read on the multi-meter.
Old School –
1. Start with gain adjustment levels on LP3-2 and ampliers set to minimum.
2. Turn source unit to ¾ maximum volume and play a familiar song that has dynamic attributes.
For example, if your volume goes to 40 you will turn it up to 30 and play a song that has some
quiet sections and some really loud sections.
3. Slowly adjust front channel gain of LP3-2 until just a hint of distortion is audible, and then
back down gain just under that threshold and the distortion goes away. (gure 2)
_
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Figure 2
Example:
Amplier 1 (Mid/High frequency) has a maximum 4v input voltage, so you will be targeting a 4
volt output voltage from the LP3-2.
or
Amplier 1 (Sub frequency) has a maximum 2v input voltage, so you will be targeting a 2 volt
output voltage from the LP3-2.
1. Start with gain adjustment levels on LP3-2 and ampliers set to minimum.
2. Turn source unit to ¾ maximum volume and start test track
(1kHz for mid/high or full range, 100Hz for sub).
3. Choose either left or right channel - With multi-meter, test output of LP3-2 .
Probe with negative on RCA shield and positive in center of RCA output. (gure 1)
4. Slowly adjust level on LP3-2 until you reach the target voltage of the amplier. (gure 2)
5. Turn volume down and system off.
6. Connect RCAs, set gains on ampliers to minimum
7. Turn system on and ne tune gains of amplier (if needed).
Note: If using large RCA connectors and have difculty inserting into housing, unsnap the
L.O.C.PRO™ cover and remove insert around RCA outputs.
Figure 1
Set meter to AC voltage.
Connect Red probe to Voltage (V)
Black to Common (COM)

Produktspecifikationer

Varumärke: PAC
Kategori: Inte kategoriserad
Modell: LP3-2

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