1200W+ AMPS SENDING DC TO SPEAKERS, I need help Options

[Kamakaze]

Ive done a few installs and Ive seen this problem about 4 times, where the amplifer sends out DC to the subs and ends up burnin out the sub. Ive tried alll i can think of but heres my history.


1st It was a KICKER 650 amp with Kicker L7 subs
-----changed the amp out to a Swiss Audio AmP, this was a much bigger amp and it sent even more DC voltage.
-----then changed a Pioneer4800 headunit to the pioneer N3 (that didnt solve anything
Then I decided to change out the subs (since those got burnt out) and added two L7's) still a problem so i left that project alone before i blew those too.

Next car had the same KICKER 650 amp with an L5 sub
------the subs got burned out so i changed the amp to a Kenwood 1800W that kenwood jus wasnt working period, took it backk and got another one and this one is now sending DC

if anyone has a solution please let me know ASAP.

[afroman]

i know this sounds stupid but have you tried diffferent RCAs. a bad RCA can make weird things happen.make sure bass boost is all the way down, gains are all the way down. low pass is on and such. start from scrathc and work from there.
-Aaron-

[Kamakaze]

i know this sounds stupid but have you tried diffferent RCAs. a bad RCA can make weird things happen.make sure bass boost is all the way down, gains are all the way down. low pass is on and such. start from scrathc and work from there.
-Aaron-

damn man i tried all that an i still got probz? Any other suggestions

i know this sounds stupid but have you tried diffferent RCAs. a bad RCA can make weird things happen.make sure bass boost is all the way down, gains are all the way down. low pass is on and such. start from scrathc and work from there.
-Aaron-

damn man i tried all that an i still got probz? Any other suggestions

My popz suggested I put caps goin from the terminal to the to block DC. Would that work?