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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

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Old 9th Aug 2011, 10:22 am   #1
reddish75
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Default Sugden A48

I'm just about to embark on the restoration of this Sugden A48 amplifier and have a few questions, firstly does anyone know what wattage the resistors are? Also are there any worth while mods out there?

Thanks

chris

Last edited by reddish75; 9th Aug 2011 at 10:23 am. Reason: spelling
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Old 9th Aug 2011, 1:05 pm   #2
D_S_J_R
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Default Re: Sugden A48

Seriously, it might be worth contacting Sugden for info, as they're still around.
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Best wishes,

Dave
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Old 10th Aug 2011, 11:31 am   #3
BassoonBloke
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Smile Re: Sugden A48

Hi Chris,

There seem to be a few different versions of this amp. I seem to have a MK1 without the cutout relay. Finding the correct circuit diagram seems quite tricky (i've yet to find the correct one for my amp ).
If i were you i would replace the main power supply smoothers and output caps as they are getting on a bit now (and are probably drying up and losing capacity).
Other than cleaning dirty switches and generally checking for frying resistors, leave it as is and see how it performs.
This amp has been reported as running in Class A, this is not the case and infact it runs Class B and quite cool (the Drivers run in Class A).

Good Luck.
Cheers,
Alan.
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Old 10th Aug 2011, 2:44 pm   #4
reddish75
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Default Re: Sugden A48

No relay in mine, the version i have has just j.e sugden on the front in a wooden sleeve.
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