is this amp blown?

[302yota 10+ year member]

one of my friends 15" L7 is powered by a hifonics titan 1500, and all of the sudden the L7 was barely working....so we checked the sub and it's not blown, and we noticed that with the volume turned all the way up, the sub is working but barely putting out any sound.....i also noticed after pulling out the remote bass knob, that the sub would make a sudden hit, and the green light would get brighter....and after inserting the knob the sub would hit again, and the green light would dim

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[1rockford1 5,000+ posts]

one of my friends 15" L7 is powered by a hifonics titan 1500, and all of the sudden the L7 was barely working....so we checked the sub and it's not blown, and we noticed that with the volume turned all the way up, the sub is working but barely putting out any sound.....i also noticed after pulling out the remote bass knob, that the sub would make a sudden hit, and the green light would get brighter....and after inserting the knob the sub would hit again, and the green light would dim

how did u check the sub with another amp?

 

[302yota 10+ year member]

yes...and before that i used at dmm to check the impedence of the sub, which was what it was supposed to be

 

[1rockford1 5,000+ posts]

try another sub to the amp and go from there. if there is any bass boost on turn that off. I would say there could be an amp issue .

 

[302yota 10+ year member]

that's what were gonna try next...i wonder if the rca preouts could have blew (or messed up) on his hu...it's a jvc, btw.

 

[Hitler 10+ year member]

that's what were gonna try next...i wonder if the rca preouts could have blew (or messed up) on his hu...it's a jvc, btw.

Maybe one of your rca's came out behind the head unit. Check your wiring.

 

[1rockford1 5,000+ posts]

Maybe one of your rca's came out behind the head unit. Check your wiring.

i had that happen.

 

[302yota 10+ year member]

i ran a good set of rcas from the hu to the amp, and that didnt work...so it's not his his rca's...but maybe it's in his hu......can i check the rca's with the dmm or somethin