[Elecraft] [K3] Advice needed from audio grounding experts

David Woolley forums at david-woolley.me.uk
Sun Aug 16 06:14:55 EDT 2009


Paul Fletcher wrote:
> 
> 
> Dave G4AON wrote:
>> Paul, I think you are looking at the wrong side of the transformer, on 
>> the circuit diagram the right hand side connects to the rear panel 
>> sockets via J91 and is "floating" with respect to DC ground.
>>
Doh.
> 
> You are quite correct. Thanks for pointing this out Dave. Makes things much
> simpler.

Note that this list's real expert on audio grounding would claim that 
the inclusion of the transformers is a design flaw, and the the real 
solution is good ground bonding and the use of twisted pair cables. 
Ideally these should have balanced drivers and receiver, but, if I 
understand him correctly, even unbalanced they help.

-- 
David Woolley
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