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Old 13th July 2011, 04:48 PM   #11
diyAudio Member
Join Date: Jan 2008
Location: Athens, Greece
Originally Posted by analog_sa View Post
So you are not getting hum, but buzz, right? Schematic will be of no use for this, rather build a simple DC blocker.

270v AC 330vDC
Thank you for the schematic.
The amp is working perfectly, no ham or any other kind of noise, although it is connected to 107 dB speakers (avant-garde duo).
I asked the schematic in order to modify some points.
Thanks again.
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Old 16th January 2012, 12:13 PM   #12
Yann44 is offline Yann44  France
diyAudio Member
Join Date: Nov 2008
I wish you a Happy New Year,

Sorry, I live in France and my English is not good.
I have a preamp BEARD P500 and I should like to get the schematic.
Please, I would be very happy if somedy can help me to get this schematic.
It is necessary for me to repear this preamp Beard P500.

Thank you
Best regards,

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Old 7th October 2012, 04:02 PM   #13
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Join Date: Mar 2011
Iam currently considering building a Beard P35 clone, i was wondering do you have any specification on the transformers ? Both mains and opt.

Regards x3me00
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Old 7th October 2012, 11:22 PM   #14
AJT is offline AJT  Philippines
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Join Date: May 2003
Location: Palatiw, Pasig City
Originally Posted by attilio.mazzone View Post
no... but the noise hum in the speakers is very low, very little...
the big noise hum is in the amplifier... it comes from the power amplifier....
also when the speakers are unplugged the hum is strong...
try to tighten up the bolts on the power traffo...if that does not will need to dismantle that traffo from the amp and put a wooden wedge(popsicle stick types) between the core and the coil...then dipping into a bath of insulating varnish will kill that noise once and for all...
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
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