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Old 05-01-2014, 06:44 AM
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wildcatt wildcatt is offline
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Default rumbling sound when voltage changes

I have a 100 watt - 10" black bazooka sub.

All has been fine for the last 2-3 years, but now I'm noticing a rumbling or popping sound, at times.

I thought it was bad connections, so I changed the wiring harness to a new one. Still the same. Then I swapped the 10" for one of my 8" powered units. The sound disappeared.
I put the 10" back in and the sound came back.
Recently I have notice a correlation between voltage changes in the vehicle and the noises occurring.
For example - when I change the fan speed, or when slowing down, or turing on the rear window de-fogger it happens every time.

Does anybody have any info as to what could be causing this?

Thank you

Tom!
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Old 05-01-2014, 09:07 AM
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heavyduty heavyduty is offline
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Default Re: rumbling sound when voltage changes

Quote:
Originally Posted by wildcatt View Post
I have a 100 watt - 10" black bazooka sub.

All has been fine for the last 2-3 years, but now I'm noticing a rumbling or popping sound, at times.

I thought it was bad connections, so I changed the wiring harness to a new one. Still the same. Then I swapped the 10" for one of my 8" powered units. The sound disappeared.
I put the 10" back in and the sound came back.
Recently I have notice a correlation between voltage changes in the vehicle and the noises occurring.
For example - when I change the fan speed, or when slowing down, or turing on the rear window de-fogger it happens every time.

Does anybody have any info as to what could be causing this?

Thank you

Tom!
Check your ground. Make certain the fastener is tight. If the terminal is tight, relocate the ground to see if this clears up the problem.
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