Diagnostic troubles

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=83275
Printed Date: May 15, 2024 at 1:00 PM

Topic: Diagnostic troubles

Posted By: justodd
Subject: Diagnostic troubles
Date Posted: September 23, 2006 at 9:35 PM

I have a problem where the speakers on the left side (front and rear) intermittently don't work. These are on a 4-channel amp, and the right side works. Is the amp the problem?

On another vehicle, I have a 15 inch sub (powerbass xtreme, 2vc x 1ohm), and whenever the bass hits there is a painful vibration (not the good kind) is this an indication of a blown sub?

Any ideas would be greatly appreciated.

todd

Replies:

Posted By: KarTuneMan
Date Posted: September 23, 2006 at 10:21 PM

Its real odd that both front and rear on the same side would intermitantly quit. To me thats an indication that the audio cables are hooked up wrong on the amp. But anyways.....check the audio cables, wiggle and giggle em.

Your second issue: Use your DMM and get a reading of the coils, keep in mind how you have your sub wired... What type of amp is powering the sub?

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Posted By: justodd
Date Posted: September 23, 2006 at 11:53 PM

I will check the cables.

I have the two voice coils wired in series, and paralleled with another sub (2vc x 1ohm) to get a 1 ohm load to the power acoustik class D amp. What exactly am I looking for with the Dmm?

thanks,

todd

Posted By: KarTuneMan
Date Posted: September 24, 2006 at 12:24 AM

to get a 1 ohm load to the power acoustik class D amp

To make sure you got that load. Are you sure the Power Acoustic D is 1 ohm capable? Is one of these yours?

Model	Ch	4 Ohm	2 Ohm	Rms	Max	Dimensions (LxWxH)
A1800DB	1	600	1100	1400	1800	12.6” x 11” x 2.3”
A2400DB	1	900	1400	1800	2400	15” x 11” x 2.3”
A3000DB	1	1100	1800	2300	3000	16.8” x 11” x 2.3”

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Posted By: Velocity Motors
Date Posted: September 24, 2006 at 12:31 AM

justodd wrote:

I have a problem where the speakers on the left side (front and rear) intermittently don't work. These are on a 4-channel amp, and the right side works. Is the amp the problem?

What head unit are you using and also what vehicle ?

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

Posted By: sparkie
Date Posted: September 24, 2006 at 7:01 PM

To determine where the problem is with the speakers cutting out, try switching the right and left input RCA's. If the problem switches sides then the input RCA's or radio will be at fault. If the problem is still with the left channel, then switch the speaker wires. If the problem changes then it is with the amp. If it doesn't then either the speaker wires or a speaker is to blame.

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sparky

Posted By: justodd
Date Posted: September 24, 2006 at 8:17 PM

I am using the power acoustik 3000

and the head unit is a Pioneer Premier 960