Vintage Simmons Drums (UK) Users Group

Must be just rumours. I believe the sds8 had a headphone jack and came
out much before the sds9. The headphone amp being on the PS shouldn't
matter as the cables running to and from it. Repositioning these 
cables may limit the interference. But I would first try the 50 ohm
headphone.



--- In Simmons_Drums@yahoogroups.com, <michael.buchner@...> wrote:
>
> The headphone amp of the SDS9 is located unfortunately on the
power-supply-board and not on the main pcb. Rumours say, that they
didn't want to build a headphone amp into the unit at all because they
never had headphone amps in their brains: The main pcb's design was
finished, but marketing factors forced simmons to add the amp, so this
was the only way.
> The amp is fed from the mix out by a shielded wire, but the
connection acts like an antenna for all noise, buzz and hum. But if
you run the mix out to a mixing console, you can use the console's
phoneamp. If you don't need the SDS9's mix out, you can plug an
external headphone amp there. So: Simply ignore SDS9s headphone jack.
> Greetings
> Michael 
>  
> 
> [Non-text portions of this message have been removed]
>