On 13/04/2011 21:20, Gareth Magennis wrote:


"Ron" wrote in message
...
On 13/04/2011 19:16, Gareth Magennis wrote:


"Ron" wrote in message
...
Yamaha StagePas

Did I read somewhere that it's inadvisable to use metal bodied jacks
on the amplifier module outputs as the left and right grounds are at
differing potentials?

Or did I imagine that?

Ron(UK)



Yes, I said that.


But particularly metal right angle jacks that are almost bound to end in
disaster.


Gareth.

Ah thanks Gareth, I checked the circuit diag and yes the two amps are
'out of phase' I`ve been asked a couple of times to make short link
cables with right angled jacks for the 'docked' amp to its own
speaker. I`ll have to warn customers in future.

Ron


I don't quite understand how such designs ever make it to production.


Gareth.

Probably because they aren't designed by the people who use and abuse
them.

Ron