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Adjusting Gain on Darkvoice THA332

post #1 of 6
12/31/09 at 4:56am
Thread Starter 
Does anyone have any experience with adjusting the gain on a Darkvoice THA332? I'd like to adjust the gain because it's freakin' ridiculous that I can't use a pair of HD600s with it unless I wind back the output of my DAC through software. If no one knows I might pop it open and start trying to reverse engineer it and produce a circuit diagram. I'm sure with that someone more knowledgeable about amplifier design than myself will be able to help.
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post #2 of 6
1/1/10 at 5:26pm
not sure if it is the same as the 336, but they came with a linear pot. Replace it with a log 50k and you will be happier - much better adjustment
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post #3 of 6
1/1/10 at 9:26pm
Thread Starter 
I'll stick a multimeter on the pot later today and have a look. Might be a possible fix. Thanks.
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post #4 of 6
1/1/10 at 9:41pm
Plan b if it already has a log pot and is still too loud (I have no idea) is to shunt it.

link to old thread, has link to other site
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post #5 of 6
1/2/10 at 1:19am
Thread Starter 
Yeap. Looks like it's a Linear Pot. I'll have to try and find something else I can switch in there.
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post #6 of 6
1/2/10 at 6:26am
alps will fit. I recently did this to a mates 336, and it was a stark improvement.

Whilst you are at it, check the output caps. the 336 has some cheap 10uf films in parallel to create 30uf. I replaced them with some good bipolar electrolytics bypassed with some obbligato small films and it sounds better again (which is a suprise to be honest - those films must be awful!)
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