Originally Posted by
crowz
Well I figured out the problem with the subwoofers. They do in fact work. IF you run the stereo at FULL volume. I put some hard hitting songs on a usb stick and set the eq to heavy bass and blew the speaker grill off the passenger side subwoofer. So they do work.
The problem seems to be the 600 watt subwoofer doesnt like being driven by the weak factory amp. So I guess I'll have to look into an aftermarket amp one day if I want to achieve balance between the front and back speakers. But its workable with now.
The weird part is that half volume they do no move at all. Above that they start playing and hit pretty hard at full volume. But its not really fully utilizing them since they are meant for a larger amp.
You can wire your new stereo to the OEM amp using a 4 wire connection so you can have a 4 channel hookup which then will drive the subs stronger and also fade front and back to your liking
With the stock wiring you only have a 2 channel hook up to the OEM amp and don't have front and rear fader control
I don't have the knowledge or experience how to do this but I had it done on my Roadster
I attached PDF file from the Facebook pages that show how this wiring is done posted by Robert McCubbin
I added some new information to some existing information to create this file.
Should be helpful for people doing the double din radio install and also want to convert the 2 Channel system to a 4 Channel system and still use the OEM amplifier.
He added this comment as well:
Below is some additional information that I will eventually add to the write-up on how to install the new head unit using the RCA preamp outputs and connecting the rear speakers to the Subwoofer RCA outputs for better volume and bass control to the rear subwoofers.
I just installed a new head unit in a fellow Crossfire owners car and did the following.
I cut the 4 wires, at the amp, that tie the rear subwoofers to the front speakers and ran 4 new wires from those cut wires to the new radio's subwoofer RCA preamp outputs. The 4 wires cut at the amp are from the Power Amplifier Connector A and the following positions in that connector, pin 3 (left sub -), pin 8 (left sub +), pin 9 (right sub -), pin 10 (right sub +).
The front speakers were connected to the front RCA preamp outputs and the rear subwoofers were connected to the Subwoofer RCA preamp outputs.
I believe that this connection method allows the most volume and bass from the rear speakers without having to over bass the front speakers.
With using the RCA preamp outputs, the volume has to be at a much higher setting than if the speaker wiring is used from the wiring connector on the back of the head unit.
I had recently wired my head unit using the speaker wiring from the connector on the back of the head unit and feel that using the rear speakers wiring doesn't allow the subwoofers to operate properly even with cranking up the bass, which I felt overwhelmed the front speakers. When I used the speaker fader and changed it to be only the Subwoofers, I had very little volume compared to what the volume was on the front speakers.
I've since changed my speakers to be connected to the RCA preamp outputs, using Front Speakers and Subwoofers. Note: This arrangement didn't allow the Fader to work, on my double din radio, because there are no speakers connected to the rear RCA outputs. Apparently the Subwoofer RCA outputs are not part of the Fader feature, on my radio.
I do however believe that on the other radio that I did the same arrangement, that the Fader feature worked.