Re: Aftermarket Pioneer headunit, getting back subwoofers to work?
You have to make sure you connected the Blue/wht amp turn on wire so it turns on both the factory amps . It depends on what brand harness you used as you may need to switch a wire or two around since the CrossFire uses a VW/Audi harness and not one dedicated to this car model . The Subwoofer "reverse" setting is mainly for use in long SUVs where a aftermarket subwoofer in back connected to an amp is a long way from the front speakers . It changes the phase so that the sound waves meet at the proper time with the front image . It changes nothing if you are not using a seperate subwoofer/amp setup .
There are several settings which will affect the output to your front speakers/factory rears etc and some that do nothing without outboard amps . The HP/Highpass setting filters out any low Bass frequences (120Hz and below usually) to any front speakers connected to the speaker output wires from the headunit . This is good as most speakers smaller than 8" really have a hard time producing those frequences without distorting badly . With this set to "on" you will be able to get more volume before distortion from the door speakers . Drawback is the rear factory Bass speakers (notice I didn't call them Subwoofers, they are really too small ) are on the same output as the door speakers so with this "on" the rear will basically output nothing because the factory amp for them has a built in LoPass crossover to filter out anything above 120Hz . I am using a Panasonic CQ-C7431U with the HP filter switched to "on" but I have a 10" subwoofer in the hatch area and it sounds great . The factory rear speakers are basically idle as I want them to be and the frount speakers are very loud and clear. Your radio probably has a Bass/Mid/Treble and a loudness feature also which will affect the front speaker sound but the "subwoofer level" adjustment will only adjust the outputs to a seperate aftermarket sub amplifier just as the "reverse" setting does .
If the radio has additional "sound field" settings like Rock , Jazz , Pop etc , leave them off as they only add to the distortion . Set one or two of the custom EQ setting as you prefer and enjoy .
Hope this helps ...
Last edited by DarkSide41; Jan 2, 2008 at 11:51 AM.