5 channel amp shutting down

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=4265
Printed Date: August 20, 2025 at 12:29 AM

Topic: 5 channel amp shutting down

Posted By: jonezy77
Subject: 5 channel amp shutting down
Date Posted: October 07, 2002 at 7:03 PM

I have a sony explode 1505- 5 channel amp (40 X 4 + 150 X 1) installed in a 93 Ford conversion van. I have (6) brand new 5x7 kenwood speakers(2-35 rms) (front 2 channels running the front (@ 4ohms) the rear 2 channels running remaining 4 speakers in parallel). I have 2 - 10" bazooka subs in seperate sealed boxes, running in parallel. It sounds really clean and really loud. I mounted my amp in the middle of the van on a board, and even on 1-1/2" columns on each corner to get ample ventilation. My amp shuts down after about a half hour of 7/8's volume Lots of tight bass too. My question is should I run the subs in series or the rear 4 speakers in series or both or what else could it be. The Amp's specs said it was 2 ohm stable.

I just noticed that my amp would not turn on right after It shut off like normal, so I checked the fuse out and the 30-amp fuse was melted on one contact??? I put a 25 amp fuse and it worked fine but I need to know what I should do...I know I am overpowering the amp I just don't know how the best way to fix is. Any help is greatly appreciated.

Thanx jonezy77

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jonesman

Replies:

Posted By: Velocity Motors
Date Posted: October 07, 2002 at 7:21 PM

Run only 4 speakers at 4 ohm load and runt he sub channel at 2 ohm load. This will probably make the amp last alot longer instead of shutting down after 1/2 hour.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: jonezy77
Date Posted: October 07, 2002 at 7:27 PM

So I should keep the subs on 2-ohm, not in series and what to do with the other 2 spekers (I have 6)series as well or should i run them off the head unit which I'd rather not (Jensen)

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jonesman

Posted By: jonezy77
Date Posted: October 07, 2002 at 7:56 PM

Also would a capacitor help my bass and what size should I get? Thanks for any help

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jonesman

Posted By: Velocity Motors
Date Posted: October 08, 2002 at 12:17 PM

Run the other 2 speakers off the HU and run the subs in parallel if the manufacturer says it'scapable of this. A capacitor will only help if your electrical system is strained but it will not help your amp from shutting down because of the load being too high.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA