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Old 22nd Nov 2020, 12:10 pm   #4
Cobaltblue's Avatar
Join Date: Dec 2010
Location: Exeter and Poole, UK.
Posts: 4,318
Default Re: Bush DAC90A Speaker Problems

Assuming the smoothers are up to snuff and the usual grid caps have been replaced it might be the UL41 they go internally leaky.

The DAC90A uses an unused pin(4) to anchor R12 (47K)

An improvement can sometimes be made by removing this connection and letting the connection R12, R11, C18 float.


Mike T
Don't care if it was a bargain why's it in my kitchen
Mike T BVWS member.
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