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Old 15th Jan 2018, 10:33 pm   #25
ms660
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Join Date: Apr 2011
Location: Cornwall, UK.
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Default Re: Hitachi SR-302 light bulb identification

Quote:
Originally Posted by Nickthedentist View Post
Quote:
Originally Posted by ms660 View Post
Anyone figured out the loudspeaker switch position connections for A+B yet on the schematic?
No, but I have a remarkably similar Trio unit from the same era. Selecting A+B puts the main and remote speakers in series so that the impedance presented to the amp's output stage isn't too low.
The schematic's on elektrotanya if anyone wants to try and figure it out, I can only figure out A or B, not A+B, unless I'm missing something there appears to be a chunk of circuit not shown on that schematic.

EDIT: Might have sussed it now.

Lawrence.

Last edited by ms660; 15th Jan 2018 at 10:47 pm.
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