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Rockford T10001bd
Rockford T10001bd
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Old 6th December 2017, 12:51 AM   #1
seankane is offline seankane  United States
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Default Rockford T10001bd

The amp works fine, but you can hear a chirping noise at the inductor when the bass hits. The louder the volume the louder the chirping.


Just wondering if anyone has had this problem. The amp works fine other than that.
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Old 8th December 2017, 03:32 AM   #2
seankane is offline seankane  United States
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I might add the power supply was cooked when it came in. Repaired that and the amp works great, just has the annoying chirping noise at the ouput inductor.
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Old 8th December 2017, 03:35 AM   #3
Perry Babin is offline Perry Babin  United States
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Have you tried slightly moving the wires on the inductor to see if that helps?
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Old 8th December 2017, 04:45 AM   #4
seankane is offline seankane  United States
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I tried but this model has the inductor mounted on a black square piece of plastic up off of the board. Like the power supply toroid. I will try again. The wires are difficult to move.
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Old 8th December 2017, 04:48 AM   #5
Perry Babin is offline Perry Babin  United States
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If you don't see significant high frequency noise on the output when the inductor chirps, I think it's OK.
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Old 9th December 2017, 09:36 PM   #6
seankane is offline seankane  United States
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There is 55mv on the output terminals, and a slight bit of oscillation. It makes my reference line a tad hazy. The amp works fine. The noise might become irritating for someone that mounted the amplifier inside the cab of a truck or car.
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Old 9th December 2017, 11:16 PM   #7
Perry Babin is offline Perry Babin  United States
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If the noise is only present when the bass hits, it won't be audible.
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Old 9th December 2017, 11:23 PM   #8
seankane is offline seankane  United States
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Yes true its only audible at low volume. The bass from the subs is much louder than the chirping at high volume.
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Old 9th December 2017, 11:39 PM   #9
globalplayer is offline globalplayer  Germany
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It is an old class d car audio amp.
They weren`t that refined back then.
It is probably normal.
Just a guess.
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Old 10th December 2017, 06:09 AM   #10
seankane is offline seankane  United States
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Could be but, I have 1 out of ten of these amps do this on an average.
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