ok so i hooked up 2 12" subs and an amp to my symphomy stereo. i used a line out converter and tapped intot the back speaker's. the amp turns on. but the subs will on come on every once in a while and stay on 4 like half a second. and they keep doing this no matter what i try. any idea's as to what it migt be. i just bought the subs brand new, so i doubt there blown but maybe... and the amp i got from a friend. and its a it pioneer 760 watt wich should be more than enough to push those subs. any help?

 

Where did you run the control wire to?

 

The reason amp is turning power the the woofers is the protection is kicking in due to an overload. Thats why they only stay on briefly. Have you checked to see if the impedence of the speakers is within the spec for the stereo? Otherwise you may have some kind of a wiring problem.

 

how do i check the spearker's

 

This is the reason going with an after market headunit is better IMO

 

or wiring in a set of RCA's directly to the speaker outputs behind the stereo.... line out converters cause nothing but problems

 

so what know just turn everything back to normal and get a new headunit? then just hook the rca's up to that?

 

i got a deck ill sell to you pretty cheap. came off my old system (about 6000 watts) and its nice.. im about to put it on ebay but if you want ill sell it, lol

 

I had the same setup as you have right now.....stock symphony with pioneer 760W and 2 12' JL Audio subs by using a LOCB.2 output converter and didnt have no problems......system control went up to the ignition....but no problems at all that u r describing( 99 audi A4)

 

A few things come to mind when i read your description. First would be you have the subs wired incorrectly. Such as the subs wired to a 2 ohm impedance when the amp can only put out a 4-ohm signal without clipping. this will make your amp go into protection whenever the subs go to play any signal. Heres a link for wiring up subs correctly http://www.edesignaudio.com/edv2/ele...gns_wiring.php. Another possibility is you could have the gains set really high or even the bass boost and is causing it to clip as well and then shut off to protect itself. Heres a link on setting the gains properly so you dontget a clipped signal which will put your amp into protection and eventually fry your subs. http://www.subwoofertools.com/forum/setgain.asp
let me know if those helped any