amp cuts out
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=9909
Printed Date: May 22, 2024 at 8:15 PM
Topic: amp cuts out
Posted By: mack6820
Subject: amp cuts out
Date Posted: February 22, 2003 at 4:01 PM
Hey ya'll. Lets see what I get from this one. I was driving a 94 Ford Explorer with a Kenwood head unit, Kenwood crossover, Kenwood 729s 600 watt amp pushing two Toby 10's. The damn thing hit so hard I couldnt crank it all the way without sneezing. I loved it!! So then I bought a 98 Ford Expedition and wired everything from my Explorer into the Expedition exactly the same way. Now I dont get the bass I had before and my amp cuts out when I try to crank it. The amp gets hot quickly also. I figure my bass problem could be due to the larger cargo area but I cant figure out why the amp cuts out.It comes back on as soon as I turn the volume back down. Any ideas?
Replies:
Posted By: Jussi
Date Posted: February 22, 2003 at 4:05 PM
Check your grounding!
It could be one reason, your amp won't get enough "juice"...
Jussi
Posted By: mack6820
Date Posted: February 22, 2003 at 4:08 PM
I hooked up the multimeter and Im running about 13.8 volts and when the amp cuts out, it jumps to 14.1 volts. Im using 4 gauge power and ground wire. I was wondering about the ground but my multimeter is saying its ok.
Posted By: Jussi
Date Posted: February 22, 2003 at 4:27 PM
OK, it's not the grounding... are you sure, that everything is installed as it was in your previous ride?
Jussi
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Installer/Owner
JL-Autosound
Helsinki, FINLAND
Posted By: esmith69
Date Posted: February 22, 2003 at 7:35 PM
Double check the wiring from the subs to the amp as you may have inadvertently bridged the subs. Also, do you happen to have a cap installed? And finally, does it start to distort before it cuts out, or does it just sound normal prior to the cutting out?
Posted By: auex
Date Posted: February 22, 2003 at 8:47 PM
Where is your amp mounted to? It sounds like it is thermalling(getting to hot and shuts itself off, you might want to think about a fan if there is no circulation where you mounted the amp). As for the bass check the phase of the subs. Make sure the positive is to the positive and negative is to the negative, not only from the amp to the box but inside the box as well, if phase was reversed there would still be bass just no where near as much. I would also take a meter to the subs to make sure that one of them is not blown.
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Posted By: mack6820
Date Posted: February 25, 2003 at 8:58 AM
The amp doesnt completly shut off, just the bass shuts off for a second, then comes back on. I know the subs are good. It doesnt distort any. I have the amp mounted on a rack in the open so there shouldnt be any reason for overheating. I'll check the phase on the head unit to see if its reversed. Personnaly, I think the amp is crapping out on me.
Thanks, mack
Posted By: pervitizm
Date Posted: February 25, 2003 at 9:10 AM
Hey Mack6820,
What kind of Toby's subs are you running? I've heard the Ranger setup in the 4th order bandpass, and I have to say those were the loudest sounding pair of ten(s) I've ever heard.
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