Amp stops working.

[yo0123yo 10+ year member]

Whenever i turn the volume on my HU up to like 25, and play it there for 1 minute, the amp goes into protection mode till i reset it, andyone know why its happening?

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[SSS 18734 5,000+ posts]

bad ground, severe voltage drop, clipping, overheating, too low of an impedance... could be a number of problems

 

[yz_gt69 10+ year member]

i would definately check the ground first

 

[yo0123yo 10+ year member]

what if i check the ground and its all good? what could it be after that? i know its not clipping or overheating because it just happened when i had the HU at 5/35

 

[azbass 5,000+ posts]

id check the impeadence the amps sees from the speakers.

 

[azbass 5,000+ posts]

if it was a bad ground the amp would not work right in the first place.

 

[yo0123yo 10+ year member]

id check the impeadence the amps sees from the speakers.

how do i do this

 

[yo0123yo 10+ year member]

ok now whenever i turn my HU on, i hear a pop coming from the back and it just stays in protect mode... anyone know whats wrong?

 

[Slaugh 10+ year member]

what amp is that?

if you're using audiobahns it must have expired

 

[tplaya07 10+ year member]

Give us some more details of your setup..What subs? Voice Coil Configuration? What amp? What size wire for power/ground? How long playing it before it goes into protect? etc.

 

[yo0123yo 10+ year member]

OK i have a hifonics bx1500d powering two 12" kicker L7's they are dual 4 ohm and the speaker wire is 12 gauge and the power/grounds are both 4 gauge, now everytime i turn it on, i just hear a popping sound and then it just stays in protect.

 

[mikescanlon 10+ year member]

how'd you wire those subs... do you know how many ohms they are running at? dual voice coil 4 ohm subs can get down to .5 ohms if you do it right.. which might be a bad thing for your amplifier if it can't handle that..

you having engine noise too? i've always had engine noise when i have the big POP when i power up the system or turn the car on.

 

[yo0123yo 10+ year member]

i have a little whine coming from the subs too, u guys think its a bad ground most likely?

 

[SSS 18734 5,000+ posts]

whine is a noise problem, which is usually linked to a faulty ground, either on the amps, head unit, RCA's, or elsewhere.

 

[yo0123yo 10+ year member]

but i dont get it, sometimes it works for like 30 seconds, but when it does work and i turn the HU volume past 15 it will go into protect mode. then when i wait like 2 hours and turn it back on it works for 30 sec again but if i try it right away, all i hear is a popping sound after i turn them on and it goes into protect mode. is it something wrong with my amp?