Kenwood 9152D Mods - Possible? - diyAudio
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Old 2nd March 2012, 10:32 AM   #1
diyAudio Member
Join Date: May 2011
Default Kenwood 9152D Mods - Possible?

I had 2 of these Kenny amps and have recently sourced a 3rd. I am looking to get a forth and run 2 strapped per coil on my XXX15.
The one I just picked up had the same problem as the last one with not powering up, I opened it and replaced W17.
If earthing the chassis makes the amplifier switch on, this is usually the problem.

Anyway. I noticed on this board C15 & C199 are missing (slightly different revision to my other 2) so I was looking at fitting these.

The main reason for this thread is, does anybody have any idea about any possible mods I could make?
They are rated at 900w rms @ 2ohm but are 1ohm stable. I ran mine @ .7ohm each and they barely got warm. They are only fitted with 2x30A fuses and I believe that this is a limiting factor in their performance.
The fuses do pop when you push it for too long. I would like to fit a pair of 35A maybe 40A fuses as they seem to pop before they clip??? (Crossover @ <70Hz)

They are cheap @ 25-60 GBP so it wouldn't be the end of the world if one failed.
Is there anything I should be thinking about before just adding bigger fuses? Maybe better FET's?

I am open to any advice or thoughts can upload higher resolution pictures if required.
Thank you
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Old 2nd March 2012, 10:44 AM   #2
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Old 2nd March 2012, 05:18 PM   #3
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Join Date: Nov 2003
Location: Louisiana
I'd suggest running them until one fails. The component that fails is likely the weakest link and you can start by looking at modifying that part of the amp first.
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