I have a kicker ix 500.4 hookd up to polk audio 6x9 and 6.5. if you play the system past about 25 volume the subs will keep playing but the speakers will cut out for a few seconds as if its hiting the

SOURCE: Power Protection Circuit (SORT) Engaged

Umm a ohm meter would help you here. Double check the wires from the sub to the amp...make sure its not shorting out. Try starting the amp without the wires on the terminals...if the protection shows up then there is a short inside the unit and it will need to be replaced/repaired.

SOURCE: Amp cuts out at certain volume

is the output signal distorted? if not one of the subs could be damaged subs are capable of playing even when damage ,try them 1 at a time to see what happens.

SOURCE: kicker zx1000 only plays at low volume

your subs are blown

SOURCE: properly installing the amp with a extra battery and a capacitor

here is a website to install the cap. to the amp:

http://www.caraudiohelp.com/car_audio_capacitor_installation/car_audio_capacitor_installation.htm#car_audio_capacitor_installation

here is a website to install the second battery:

http://www.freeinfosociety.com/article.php?id=2

here is a website to install the amp. & subs.:

http://www.ehow.com/how_3680_install-car-amplifier.html

hope this help;s. please don't forget to rate this solution.

thanks tom

SOURCE: I have a 2channell FE-402 fusion amp,with a fusion

Hello jackstephens,

It's an either/or situation. The FE-402 can be set up to drive normal speakers in stereo, OR drive a sub when both channels are bridged. When the LP filter is on, it benefits the sub at the expense of the normal speakers. And with the filter off, the subs get the full range of frequencies and try as best they can to reproduce them. You might try running it with the LP on, in stereo with the 6X9's paralleled to one channel (2ohm load), and the sub connected to the other channel (?ohm load).

But my recommendation would be to use the Fusion amp the drive the 6X9's and get a dedicated monoblock for the sub.

Hope this helps.