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Old 11th January 2004, 11:40 AM   #1
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Default Newbie - Is this a good amp?

I wanna make bigger amp (20-50 watt) and this amp from Vacuum State :

http://www.vacuumstate.com/images/PP-1C.gif

http://www.vacuumstate.com/images/PP-1C_ps.gif

Does any have built this amp? Can replace El34 with SV6550C?
or may be suggestion about building another good sounding PP amp specially using 6550...

I wanna build this because it has no feedback (which alot of people say it has a bad effect) and it uses plate load on driver....

Help me please...
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Old 11th January 2004, 12:53 PM   #2
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I have not had good luck with the SV6550C tubes due to premature tube failure. For that reason, I have converted my power amplifier to Sovtek KT88 tubes. I couldn't be happier.

Inverse feedback in push-pull amplifiers is almost always necessary to reduce crossover (notch) distortion and to reduce the output impedance of the amplifier.
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Old 11th January 2004, 03:17 PM   #3
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So what do you think about that amps....?
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