trevelli

I currently have the amp inputs wired to the rear speakers. There is almost no bass coming out, I suspect the low range bass is blocked in these rear speakers.

Anyone know a good place to tap the factory system for a subwoofer amp input? Front speakers? Anyone know what color wires/where to tap them?

This is a Non-Mark Levinson system.

Any help is appreciated!

First off- this is my first post on this forum and I want to thank everyone here for the incredible information. Reading the forum helped me decide to buy my new 2007 RXh. Since buying it I've added a VAIS Soundlinq SLX (XM radio), and this thread got me interested in adding a Basslink.

My attempts so far have been less than successful. I decided to run a 10ga wire directly to the battery, as the idea of running a 200W amp off a cigarette lighter made me a bit nervous. :P Several cut-up knuckles later that's done. I then tapped the rear speakers exactly as shown in this thread. I also downloaded the wiring schematic off the TIS website and can add some info on the wiring in order to ensure proper polarity of the wiring. The driver's side speaker leads are: white +, yellow -. Passenger side is: red w/yellow +, Blue -.

Using this setup I couldn't get the Basslink auto turn-on to work. After verifying a good 12v and ground connection with a multimeter I jumpered the +12V to the remote turn-on. It turned on and proceeded to produce some of the nastiest, muddiest bass I've ever heard. No amount of tweaking could get anything remotely resembling decent sound out of the thing. After more closely studying the setup I suspect that this has to do with the equalization of the ML system. The rear speakers are described as mid-woofers, which would imply to me that the low frequencies are rolled off. Therefore, the Basslink isn't getting a full spectrum signal off the rear speakers. Those that have added a Basslink off the rears, can you advise if you have a ML or non-ML system?

Next, I called Infinity for some moral support. The guy I spoke with basically said forget about trying to get decent sound out of any of the speaker outputs from the amp on a system that does a lot of processing/equalizing. The signal is so massaged and equalized that it will not produce satisfactory results. He suggested trying to get the signal from the head unit to the amp, so I tried this next.

I was already familiar with pulling the HU from the VAIS install, so I tempted fate again with the two top screws (managed not to lose them the first time). I found the connector that leads from the HU to the amp and temporarily connected a pair of leads from there to the Basslink. Bass was indeed noticeably improved! One small drawback is that, apparently, all volume control and muting is handled by the amp not the HU so the Basslink now played at the same volume regardless of the volume (or no volume) of the rest of the system. Scratch that- back to the drawing board.

So this is where I find myself. All I want to do is add a little bit of clean, tight bass without spending a ton. The only inexpensive option that I haven't tried yet is to tap the front woofers (door speakers) and hope they have the signal in the 20Hz - 150Hz range, and that it's not too distorted for the Basslink to use (Infinity tech support didn't think this would work). Barring that, the only other viable approach is to use something like the JL Audio Cleansweep to un-equalize the amp output, but this is far more than I'm currently looking to spend.

So, I apologize for the long-winded post but I'm all ears if anyone has any other ideas.

Thanks,

John

Did you ever figure this out? I'm at the same place right now. I have an amp wired up High Level Inputs to the rear speakers, and very ugly bass coming out. Where did you end up tapping the wires? What color wires did you tap? I see the amp behind the drivers seat, just wondering what input/output to tap into. I have a remote bass controller, so adjusting volume from the fronts wouldn't be too terrible.

What is "TIS"... how do I get a wiring diagram for this car?

Thanks!

Trevor