I just installed a new pioneer head unit in my 2007 mustang gt which has the shaker 500 system. When I turn the radio on the two factory door subs make a pop noise. What and why is this doing so? Please any information would be great.

 

You need to get a 5V voltage regulator. You can get them at radioshack. Here is a how to install that talks about the regulator: https://mustangforums.com/forum/2005-2014-mustangs/394366-avic-d3-installation-56k-go-away.html

Basically the pioneer headunit puts out more voltage than the door subs can handle. If you installed it yourself put this on if someone installed it for you then get them to put it in.

 

the factory amps use a nonstandard 6v amp turn on where everyone else uses a 12v. If you wire the 12v remote turn on to the 6v amp turn on input it makes that popping noise. This can be easily fixed by either putting a 1.5k ohm resistor inline on the remote turn on wire or by hooking up a voltage regulator that is explained on the sticky at the top of the forum

 

Thanks guys. I'll go purchase one of these and try to install it. Ill let you guys know how it goes. Thanks again, everyone I have spoken to keep saying my h/u isn't compatible and I either have to live with the noise or go back to stock.

 

Actually is it possible to change out the two door subs? I actually think I just blew them lol. What can I replace them with? Everything in my car is Pioneer.

 

yes, after you replace the amp and do some modifications you can replace the subs. You probably just need to turn the bass down a bit.

 

I turned the bass down low and I cant hear anything really. Then I turn it up and its all distorted and crap. What kind of modifications are you talking about?

 

oh, different problem but easily fixed. The stock radios use a high voltage signal level from the deck to the amps and most aftermarket decks do not have the same amount of voltage. The lower voltage level going into the amp results in a lower output. When you boost the bass enough to hear it you send it into clipping and when you turn it down to take it out of clipping then you can't hear it.

What you need to fix it is a little box called a line driver. It is basically a rca-level amp that will boost the signal voltage to a little higher level so that the factory amps will be happy. The only bad part of it is that it can simetimes cause a popping noise in the subs when the deck is turned on depending on what brand you have. You can find them anywhere from $20-100 depending on brand, I think I still have mine in my tool box since I took my mach stuff out if you can't find one locally. Like I said, simple device, power, ground rca's for input and outputs and you are done and happy........

 

So lets say I install this line driver and it all sounds better but it still makes that popping sound. If I still install the 5 volt voltage regulator would that still make them sound good while fixing the popping sound? Or would that basically cancel out the line driver?

 

it will not take away the turn on pop if there is one there already. I would recommend either doing the regulator or you can put a simple resistor inline as well as the line driver. The line driver will clear up the muddy bass sound, I swear.....