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Old 14th January 2003, 02:58 PM   #1
Praudio is offline Praudio
diyAudio Member
Join Date: Mar 2002
Location: Canada
Default BOZ questions

I am building a BOZ and would like to use fixed resistors(instead
of 100k pot) at input,my power amp need 1.25v for full output. What value seem to be a good choice.

Also it seem that EB on TIP 29c are in reverse position if TIP29c
is well BCE(as per original article TAA/94 and Pass Lab site.

Thanks for your help.
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Old 14th January 2003, 03:51 PM   #2
Taco is offline Taco  Netherlands
diyAudio Member
Join Date: Nov 2002
Location: Chicago
You mean stepped attenuator? Or 1 volume level?
I had troubles with only a POT at the output, the amplifier distorted like hell. Now I have put a 100k resistor in series with the input. For the powersupply I used the BD139.
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Old 15th January 2003, 10:56 AM   #3
SDF is offline SDF  France
diyAudio Member
Join Date: Jun 2002
Location: FRANCE
Hi Praudio, you should calculate the resistor attenuator. it depends to the output voltage level of your source (CD player ) Give me it I will give you the result.
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