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Old 7th January 2002, 11:47 AM   #1
diyAudio Member
Join Date: Dec 2001
Location: Strasbourg (France)
Default Aleph30

I have some questions about aleph30.
On the schematic there are three resistors without any value. There are R8?, R8* and R1*. What does it mean ?
I would like to use IRFP244(TO247 case) transistors instead of IRF244(TO3 case). Can this cause sound quality problems or does these transistors sound as good as the TO3 versions?
Thanks for your answers.
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Old 7th January 2002, 01:03 PM   #2
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Join Date: Aug 2001
I don't see why different transistor cases can cause sound problems.....

As for the unmarked resistors try running a search on the topic of 'Aleph 30 unmarked resistors'
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Old 7th January 2002, 01:03 PM   #3
Freddie is offline Freddie  Sweden
diyAudio Member
Join Date: Oct 2000
Location: Sweden

R1 is used to trim Power Supply Rejection
R8 is used to trim DC Offset

But you don't need those resistors. I'm not going to use those in my Aleph either.

IRFP244 will work very good..

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Old 7th January 2002, 06:01 PM   #4
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Join Date: Dec 2001
Location: Strasbourg (France)
Thanks for your answers
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