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Old 17th May 2007, 09:30 PM   #1
forr is offline forr  France
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Default Distorsion due to RFI at amp output

I am looking for this article :
"Resonances & Repercussions". P.Miller. Hi-Fi News & Record review. June 1989 pp35,37
It deals with RFI at the amp output having distorsion effects in the audio band.
Thanks in advance.
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Old 17th May 2007, 11:01 PM   #2
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Default Re: Distorsion due to RFI at amp output

Quote:
Originally posted by forr
I am looking for this article :
"Resonances & Repercussions". P.Miller. Hi-Fi News & Record review. June 1989 pp35,37
It deals with RFI at the amp output having distorsion effects in the audio band.
Thanks in advance.
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Old 19th May 2007, 12:15 AM   #3
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Thanks Jorge.

In his article, Paul Miller says that the Deltec DPA-50S power amp was he least suceptible to RFI, because of exceptional open-loop linearity, of the amps he tested. Does anybody know how this linearity is achieved ?
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Old 19th May 2007, 09:57 AM   #4
peufeu is offline peufeu  France
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I would be very interested in this article too !
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Old 19th May 2007, 10:20 AM   #5
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Hi Peufeu,
Do you already know Miller's article ?
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Old 19th May 2007, 10:22 AM   #6
peufeu is offline peufeu  France
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No, I never read it, but would like to. I'd really appreciate if you could send it via email
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Old 19th May 2007, 10:33 AM   #7
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Hi Peufeu,
Send me an email.
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Old 20th May 2007, 06:06 AM   #8
Hartono is offline Hartono  Indonesia
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me too forr
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Old 20th May 2007, 06:44 AM   #9
sandyK is offline sandyK  Australia
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Default Distortion due to RFI at amp output

I don't have that article, although I may have read it back then.
Particularly with the much longer speaker leads of rear surround channels, it was suggested to wind a couple of turns of the speaker leads through a toroid near the amplifier output. At the time , I lived only a couple of kms from the Sydney TV towers and used to hear low level "frame buzz" .The toroids cured the problem.
SandyK
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Old 20th May 2007, 08:04 AM   #10
Hartono is offline Hartono  Indonesia
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toroid from DickSmith !!! I assume
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