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Old 9th January 2005, 06:53 PM   #1
Cr3ator is offline Cr3ator  Netherlands
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Unhappy Aleph still Alive, but too much bias

After my first hours of listning itīs time to tweak this amp to perfection. I noticed a temperature difference between both heatsinks, and measurements showed that the bias of my left channel is 2.6 Amps instead of 2.0. I used the same parts for both channels, used the same wirelenghts and same heatsink. So one would expect same behaviour.

I used a fixed 221kOhm resistor for bias and 432Ohm for gain. Is it ok to assume everything else is ok (checked all the voltages: were ok) and just tweak the bias of my left channel to 2.0A by using a lower value bias resistor?

ErikH.
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Old 9th January 2005, 08:06 PM   #2
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yes,

or you could try another BC550 or whatever you are using.

William
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Old 10th January 2005, 01:25 PM   #3
Cr3ator is offline Cr3ator  Netherlands
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Quote:
Originally posted by wuffwaff
yes,

or you could try another BC550 or whatever you are using.

William
I'm using the ZTX450, but will try! I belive I have a spare one. Thanks.
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