I have a 2004 GS300 ML & NAV. . . Alright guys, so I just installed an amp (http://www.sonicelectronix.com/item_...s-AR2000M.html) and subwoofer (http://www.sonicelectronix.com/item_...-SWA-10S4.html). And it has been a sucessful day... except for the fact that I cannot get my subwoofer to get louder past a certain point. When i say this, I mean that my subwoofer is completely controlled by the remote, and that regardless of if you can not hear the audio or you can, the sub plays as loud as you have it cranked up on the remote. It doesn't increase in loudness when you turn your audio up, rather only when you turn the remote up. So I'm trying to figure out if this is common or what. BTW I have my settings on my amp cranked all the way up since the car audio doesn't regulate sub loudness. And I would prefer my subwoofer to go louder.
Alright Guys so I fixed it all up, and yes I am running the head unit. My problem was with the rca wiring, i need to wire specifically to the sub 1 channel instead of left+/- and right-/+ front channels. That completely fixed my issues.