Metra PR-LOC2.4 Bedienungsanleitung


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PR-LOC2.2 & PR-LOC2.4
I N S TA L L AT I O N I N S T R U C T I O N S
MetraOnline .com Ā© COPYRIGHT 2022 METRA ELECTRONICS CORPORATION REV. 9/12/22 INSTPR-LOC2.2 & PR-LOC2.4
TABLE OF CONTENTS
Quick Start Guide
Things to Know .................................................2
Connections .......................................................2
Gain setup
Basic setup.........................................................3
Quick Reference: PR-LOC2.2 ..................................5
Diagram: PR-LOC2.4 ...............................................8
Specifications .........................................................9
Universal Premium LOCs
PR-LOC2.2 2 IN - 2 OUT with Max Input 20v
PR-LOC2.4 2 IN - 4 OUT With Max Input 20v
TOOLS RECOMMENDED
• Digital Multi-meter
• Test Tones
Universal Premium LOCs
The Proscenium PR-LOC2.2 & PR-LOC2.4 can be used to add amplifiers to an audio system that does not have RCA outputs or when replacing
an OEM radio and retaining the factory amplified system. Variable Gain Controls with Clipping Indicators, Selectable Ground Isolation Load and
Select features ensure a pure, noise-free signal for any type of audio system.
PR-LOC2.4
Line Out Converter (LOC)
KIT COMPONENTS
PR-LOC2.2
Line Out Converter (LOC)
2
THINGS TO KNOW
1. This is an active LOC and MUST have constant 12 volt and a good ground to operate properly.
Having a poor ground can induce noise into your system, use the same gauge wire as the
12 volt line.
2. Determine a suitable mounting location. Make sure you can access all controls and
connections.
3. When ready to mount your LOC check under your selected mounting location to make sure
it is clear of any wiring harnesses, fuel or brake lines or anything else that may affect the
vehicle safety.
QUICK START GUIDE
CONNECTIONS
1. Connect your 12 volt and ground wires to the terminals. 14-16 gauge wire is recommended.
2. By default the LOCs Turn On Mode DC Offset is set to . Other turn on options are available and
described in the Turn On Signal Feature Breakdown portion of this manual.
3.
Connecting your can happen in a few different places based on your Speaker Input
factory system.
If your vehicle doesn’t have an OE amplifier your best option is to use the speaker wires a.
located behind the radio. Your LOC only requires two inputs, we recommend a left
and right full range signal.
If your vehicle has an OE amplifier your best option is to use the speaker wires on b.
the output side of your factory amplifier, look for a full range signal.
4. Connect your RCAs. RCA’s are for the right channel. Red Black, Gray, or White are for the
left channels. An explanation of the RCAs and are described in the Main Output Bass Output
Feature Breakdown portion of this manual.
3
REV. 9/12/22 INSTPR-LOC2.2 & PR-LOC2.4
GAIN SETUP
Setting gains is very important, if done incorrectly you can damage your speakers. It is
recommended that all settings be adjusted by a professional. Proscenium LOCs have a maximum
output of 9.5v RMS. On average aftermarket amplifiers have a maximum input voltage range of
3-6 volts.
When adjusting the gains it is important to understand the input sensitivity of your aftermarket
equipment and adjust the Output Levels of the LOC to match. If the Output Levels of the LOC
are increased beyond the input capabilities of the amplifier it will cause the input stage of the
aftermarket amplifier to clip, creating distortion. The fix would be to lower the output levels of
the LOC until the distortion is removed.
Basic Setup - No Tools Required
1. Before turning your system on, set all levels and gains to . This includes the LOC Minimum
and all aftermarket amplifiers.
2. On your radio make sure all audio adjustments i.e. Bass, Treble, Balance Fadeand are
Centered and Flat. Turn Loudness off and any preset EQ to .Flat
3. While playing a Pink noise track or a song with dynamic sound, increase radio’s volume to
3/4 of the way up.
4. Adjust the output levels of the LOC slowly until the clipping indicator activates, then reduce
the levels so the indicator light doesn’t come on.
5. Do not adjust the amplifier’s gain.
Advanced Setup - Tools Required: Digital Multi-meter, Test Tones
1. During this setup process the RCAs between the LOC and aftermarket amplifier need to be
disconnected. They will be reconnected in .Step 11
2. Set all levels to on the LOCMinimum
3. On your radio make sure all audio adjustments Bass, Treble, Balance, and Fade are centered
and flat. Turn off and any preset EQ to .Loudness Flat
4. Open the manual for the aftermarket amplifier and look for Line Input Maximum Sensitivity
on the specifications page. This measurement will be in volts. (i.e. 3vrms 6vrms)
5. If setting gains for a full range system, play a 1 kHz tone through your radio into the LOC. If
setting levels for a subwoofer, play a 100 Hz tone from the factory radio into the LOC.
6. Turn the radio all the way up, you should not hear the tone playing.
7. Using a Digital Multi-meter set to Volts AC Black OUTPUT RCA, touch the lead to the shield
and insert the lead to the center of the . You will see a voltage reading Red RCA OUTPUT
show on the Multi-meter’s screen.
8. OUTPUT LEVEL Adjust the of the LOC until the voltage shown on the screen matches the Line
Input Maximum Sensitivity of the aftermarket amplifier. If the Maximized light comes on
before the level is reached, reduce until the light is off. OUTPUT LEVEL
9. Steps 7 8 Repeat and for the rear output.
10. Turn the radio’s volume down
11. Connect the RCAs from aftermarket amplifier to the LOC.
12. Adjust the gain on your amplifier(s) to . Minimum
13. Refer to the amplifier’s manual if additional adjustments are required.


Produktspezifikationen

Marke: Metra
Kategorie: Nicht kategorisiert
Modell: PR-LOC2.4

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