Hey all, first time poster.

I recently installed a new set of Hertz 163's (3-way) and an Alpine PDX-F4 amp in my 2009 MCS hardtop with HiFi but am having intermittent sound issues and need some help.

I tapped into the speaker signal ahead of the factory amp and am running it through an LC6i LOC to the amp under the passenger seat. The LOC is handling the speaker level to line level conversion and the remote turn on for the amp. I have double-checked all of the connections and cannot figure out what is happening.

Symptoms started when I turned it on and all of the sound was coming out of the left woofer only. It was horribly muted and full of base with nothing out of the mid-range or tweeter. After fiddling with the connections at the LOC, I now have sound out of the left tweeter but nothing else. I also tried swapping the channels at the LOC and I get the same thing on the passenger side. Anyone seen this?

Sound out of the stock rear 6x9's and factory amp is fine. Could this be a ground issue? Signal issue from my t-clip connections at the factory amp? Multiple things? It is killing me.

Thanks for the help.

 

Sounds to me like the t-clips are not making good connection. Or the LC6i is not functioning which could be a ground problem.

I would recommend that you tap the audio signal up in the front at the X9331 connector. The wiring is much larger and not as fragile up there.

 

I recently installed the same LOC in my R56. I tapped my speaker connections directly at the head unit. I only have the base system tho. I used both the front and rear speaker signal to power the LC6i. I am not using rear channel for amp signal only for the GTO feature. I placed the front channels into input 2 on lc6i in turn powering channels 2 and 3 on output side of lc6i. Did you use both front channels? Have you tried the summing feature on the lc6i? Audio controls customer support is very helpful you may want to call them. They are the ones that told me to change the inputs around.

 

Thanks for the replies. After digging through things again, I found 2 issues; 1 mine and 1 equipment;

1. I had tapped into the amplified output signal rather than the input. Ridiculous given the amount of time I spent reading through all of the posts to get things right. Really wished they had used unique color combinations on the output signal.
2. Bad RCA cable connections into the amp.

Everything is fixed now and sounds great. Now onto the Sub project.