PAC Trunk Loc problem

[caraudiorookie]

I recently purchased a PAC trunk LOC to install into my calais v sportwagon. I would like to add an existing sub and amp (just a sony XM222) to the system.

I have run the power and ground wires to the amp. I have disconnected the center speaker and extended the wires to run them to the LOC. I have paired the LOC - with the - speaker wire (and the green signal sensing wire) and paired the LOC + with the + speaker wire. The Trunk LOC appears to be sensing the signal because the amp only turns on when the HU is on but there is no output. The sub is bridged and the low pass filter is on. I have tried adjusting the channels on the LOC but it has no effect.

Thinking that the center speaker may be filtered I have turned the high pass filter off and tried connecting a standard speaker to the amp instead but it also does not produce any sound.

Any advice would be appreciated.
Thanks

[holdenboy]

Hmm, why get your signal from the centre speaker? I would have thought getting it from the rear speakers would have been better?

Anyway, i think the centre speakers in the VEs are a small dual voice coil speaker......it receives signals from the L and R front speakers which go to each voice coil, basically this means it plays both L and R channels.
So when you disconnected the speaker, were there a total of 4 wires going to it? Also, is the LOC a 2 channel model and have you ran both the L and R speaker wires to it?
I would just make sure youve got the +s and -s around the right way, it possible that you have two -s going to one input and two +s going to the other.

Please post up the model number of the amp, you got me a little confused when you said you had the LPF and the sub was bridged, then said you turned the HPF off to run a speaker....you didnt have both filters running at the same time (if its possible with the amp)?

[caraudiorookie]

Thanks for the reply.

I used the center speaker as I was disconnecting it anyway. I figured it avoided using wire taps, it was easy to access and easy to extend the wires to the LOC. Maybe I will have to consider tapping a rear speaker.

When I disconnected the center speaker there were only two wires. An orange + and a blue -.

The LOC is a two channel with remote turn on. I took the two LOC + and twisted them together with the + from the speaker and the same for the negatives (plus the green signal sensing wire).

The amp is just a sony xplod XM222. It was in a previous car. I realise that it is low end but it serves my needs. Sorry, I meant to say I turned the LPF off to test with a coaxial (there is no HPF filter on the amp).

I tested the RCAs coming out of the LOC with a multimeter for signal and there is no voltage that can be detected. The funny thing is that the LOC is detecting a signal as it is triggering the amp. There just seems to be no signal coming out of the outputs from the LOC.

[holdenboy]

I would try tapping into the rear speaker wires, and i mean both left and right wires to run to your LOC. Firstly, try it without the sensing wire and just run a small cable from the + terminal of the amp to the REM terminal (just to turn it on to test). If it works fine then try attaching the sensing wire and see if it still works.

Another option (maybe try this first) is to re-connect the centre speaker while still having the LOC wires connected, if sound comes from the speaker but the amp still dosent produce sound (try with a normal speaker first) then its either a wiring fault (in your LOC wiring) or a component fault (LOC, amp or sub).

Ive disconnected a few centre speakers in the VE, and as far as i can remember they were dual voice coil, although i would imagine the sportswagon would have some small changes in it as it was released some time after the VE sedan etc.

[caraudiorookie]

I went ahead and tapped a rear speaker and all is working properly now. For some reason the front center just doesn't seem to work with the LOC.

Thanks again for your advice. Much appreciated.

[holdenboy]

No worries....man the VEs can be a little strange at times with the audio systems, but youve got it working now so all is good!