"Jasen Betts" wrote to "JEAN PARROT" (12 Jun 03  07:16:29)
 --- on the topic of "Front-Panel USB"

 JB> Hi JEAN.

 JB> 10-Jun-03 19:44:00, JEAN PARROT wrote to LEONARD ERICKSON

 JP> The double check was done but read above. The schematic shows the
 JP> twin connectors but alas, there is just the one set.

 JP> Quality control failure ?

 JB> or a change in the design...
 JB> in the past there were 2 sets of connectors  on soundcards for
 JB> different wiring patterns
 JB> (RGGL  vs RGLG) but the connectors weren't independant... plugging two
 JB> drives in would have the same effect as your probposed y-cable

 JB> it might work, it might lead to distortion. it might not work.it might
 JB> damage something (unlikely imo)

I recently did a small repair on a SCSI cd which had a dead channel.
Turned out someone had plugged it into a RGGL when it should have been
RGRL. The output driver was a tiny surface mount dual transistor. The
missing channel was due to half that transistor being literally turned
into white ashes. There was a really hot fire in there!

The amazing part is the other channel worked perfectly. With a lot of
difficulty and armed with a microscope, I replaced the dual smt with 2
small size transistors and the cd audio was fixed. So IMO it is possible
to cause serious damage (i.e. burning down the house!) by doing what he
proposes.

So when doing a Y with the cables be well advised to include a couple
of 10K ohm resistors for each channel to mix the signals from each CD.
Well 4.7K will work too but don't go too much lower than this. You may
ignore this advice if you have your circuit schematics.

 Mike
 ****

... If it's not on fire, it's a software problem.
--- Blue Wave/DOS v2.30