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Discussion Starter #1
I've just installed a system in my 2011 4runner and am having some issues.
The system is composed of:

The factory Toyota (non JBL) head unit
JL 700/5 amp
Audio Control LCQ-1 Line converter & EQ with remote Bass control
Polk MMC6500 front component speakers
Kicker (Mid only) rear speakers
JL 8w3v3 4ohm subwoofer


The problem is that the sub is playing but it's level is so low you can't hear it unless you put your ear next to it or touch the cone. I have replaced the woofer with one I know is fine and the output is the same. I have futzed with the gains on both the amp & LCQ-1 with no change.
The other 4 channels seem to be playing fine.

Here's the weird s__t, I have used the factory wiring to the speakers. I cut in the connections behind the head unit. This way I didn't have to run new speaker leads thru the doors etc. In the front I had to jump the dash tweeter plugs to get the new door components working. The factory tweets had 4 wires running to them then on to the door. I unplugged them and inserted 2 jumper wires (after checking continuity). Works fine.
In the rear, there were speakers in the rear doors and the rear hatch with a switch called "Party mode" witch boosts the hatch speaker output for tail gating. I only replaced the rear door speakers with Kicker component mid woofers, no tweets or crossovers.

The LCQ-1 uses the rear channel input to create a sub channel. could this be the reason for my low sub output?

Are there some low tech tests I can run to figure this out?

Help please !

Chip
 

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http://rs.audiocontrol.com/company_38//OM_LCQ-1.pdf

Read page 4, check your jumpers.

"AutoMode: Some cars have unusual signals on their speaker leads and
will not be easily read by the AutoMode circuit. When this occurs you can
manually turn off the AutoMode function. This is done by moving the internal
AutoMode jumper to “Defeat”. In this mode, you will need signal on the Channel
2 inputs to output signals on the Channel 3 output. We ship them with the
jumpers in the “On” position"
 

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The LCQ-1 has internal
jumpers that allow you to select
which input signals will be summed
into the Main outputs. When the
jumper is moved to the “Sum” position,
there will also be a corresponding
green indicator light on the front
of the LCQ-1. The shipped-fromthe-
factory setting is in the non-summed (Separate) position.
Sounds like you need to set the SUB to the SUMMED position if you are not providing a sub input.
 

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Discussion Starter #5
Well I got the sub to play, I had some polarity issues, I flipped a rear pair and the sub channel came to life.
The wiring diagram I got from Crutchfield was not even closs. So Im having to do alot of trial and error to get the phasing, polarity etc figured out.
If I fade to the front right, is there a multimeter way to check polarity?
 
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