Amp All Of A Sudden Shutting Off At High Volume?

[Brandon X]

Looks like ive come across ANOTHER problem with my system. I swear next time I put a full system in a vehicle, im saving up like 3k and buying the BEST and getting it installed by the best. I'm so sick of this shit.

This all started a few days ago. Was on my way to my girl's house which is an hour away, with my stereo turned up to 25 for the majority of the way. I always do this, and that's the volume I usually keep it at since ive broken the subs in which was a month or so ago. Shit sometimes I even go to 28-30 for a couple songs. Well I was playing a song that usually bumps hard (F.L.Y. - Swag Surfin') like 5 minutes away from her house and the amp cuts out on the real hard bass parts in the song. This has NEVER done this before with these subs. I get there, turn it up to 25 like it's been, and look in the back and see the amp light shuts off every time the bass hits real hard.

I know it's not overheating, and im having a hard time believing the amp is over/under powering the subs. I just don't know why all of a sudden it's doing this. And I think it's getting worse, because I turned down the gain and the sub level on my head unit and it's STILL doing it, even on songs that don't even bump that hard!

The amp is a Kicker ZX750.1 and the subs are 2 Kicker 12" CVR's in a ported box. Everything was bought brand new. Could the subs or amp be going? If so why the hell? Those subs match up almost perfectly with that amp, and the gain hasn't been over 3/4th ever, so I don't see what the problem could be. If that's the case though im going to sell them while I still can and invest in 3 12" CVR's or 2 15's. Sorry for the super long post but after dropping around $1500 on this crap and problem after problem occurring, it starts to get a little frustrating.

 

[grnrpr68]

check the ohm of the subs at the amp and make sure you are not dropping below what the amp can handle

 

[Crispy]

Subs may be partially blown. The will play at a very low level, but once the music starts pumping through it will cause the amp to go into protect. As mentioned above, check the resistance of the subwoofers. Also, see of you can swap a friends box into the truck to test the amp.

 

[xX Mavr1ck Xx]

When I installd my friends, he went through the same thing, you might take a look at the power wire fuse. He had a ****** fuse holder and it had melted the fuse, the solution was buying an ANL fuse holder w/ ANL fuses.

 

[Brandon X]

Anyone else got any other ideas? It's gonna really suck if I end up blowing them.

 

[Mild]

get a DMM and check your voltage @ the amp.

then check your fuse up front.

 

[blueflamed03]

what is voltage, AT the amp when you are hammering it? are they two DVC 2's? have SSF on? what gauge is power wire?

 

[josetizapan]

Mine was doing the same and my amp connection to the battery was all corroded i will check there. An also check how meny volts your getting into the amp making sure you dont have a voltage drop and your getting full power.

 

[Brandon X]

what is voltage, AT the amp when you are hammering it? are they two DVC 2's? have SSF on? what gauge is power wire?

I'll have to check the voltage. Yes they are two DVC 2's, 0g power wire, and what is SSF?

 

[2drhoeon4s]

also do you have an eq/ linedriver? sometimes your input signal is too strong. more than likely your subs are wired at 2ohms which is prolly the lowest the amp can take. and when they play at high levels the impedance is dropping below 2ohms causing the amp to shut off... Does it turn back on after a few seconds?

---------- Post added at 10:11 PM ---------- Previous post was at 10:08 PM ----------

try wiring your subs up to 8 ohms and see if it stops the amp cutting off.... it wont be as loud but you will be able to run it full tilt without it shutting off if it is your problem....
if that fixes it, then you need to get a different amp that will run below 2 ohms so that if the imp drops it wont shut off.