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Old 22nd October 2007, 04:17 PM   #1
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Default Radford SPA-60 schematic wanted


does anyone happen to have a schematic of this vintage radford transistor amp? This model has a linear power supply similar to e.g. Quad 303. Something is wrong with the regulator circuit. Seems that some folk messed up the unit before by trying to repair it, so the original schematic would be helpful.


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Old 23rd October 2007, 08:18 AM   #2
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You can try one of those link;



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Old 22nd November 2007, 09:23 AM   #3
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just want to bring this thread up again.
I tried both suggestions of the post above, but unfortunately I haven`t been successfull either.
Anyone else having a good idea?

thanks, audiomatic
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Old 5th April 2009, 07:50 PM   #4
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Default Schematic of Radford SPA60 amplifier

Dear Audiomatic,

I have a pdf version of the Radford SPA60 schematic for you, but the size of the file is about 1 Megabytes. Therefore I cannot attach it to this message in the DIY audio forum. However, if you drop me a line I can send you the file by e-mail.

Best regards,

Aren van Waarde
(aka arensattic)
Real HiFi runs hot and has only one speaker unit per audio channel.
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Old 17th October 2010, 07:01 PM   #5
Nafty is offline Nafty  Israel
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Dear Arensattic
I have one ST60 to rebuild.
Im running out of schematics.
Could you be very kindly and file me one simple of the schematics?
Thank you so very much.
Kind regards
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