Vintage Simmons Drums (UK) Users Group

I always wondered about these resistors, but finally I was told the story: 
Old live mixing consoles had their multicores and -multipin connectors wired 
hard to the MICROPHONE inputs and most of even the expensive consoles had no 
pads on the channel inputs. The resistors of the SDSVs individual outs 
reduced the line level to mic level.
The l/r and mono outputs were designed to drive monitor speakers and had not 
to be run through multicores. So they could stay line to drive a power amp.

Sad to say, that we had many problems to wire SDSVs correct for live on 
stage use. The outputs had XLR plugs without being symmetric. So hum 
problems occured. Because of the individual outputs mic level the use of DI 
boxes was impossible. Wiring of pad input was pin 2 hot, output 3 hot. And 
all these XLR plugs cost a fortune these days.
History...
Michael


> I know, and I just cut them close to the soldering joint. It sure
> helped! When racked you see the inside from the top of the unit since
> the cover is removed. I climbed in behind my massive rack and removed
> the back panel screws to get room for the cutter.
>
>> Seems the pinning on the XLR is wrong, maybe this is also giving less 
>> output
>> since you use a patchbay??
>
> No, it was the resistors pulling the signal down. My wiring is correct
> and has worked for years... Simmons was british, hence everything is a
> bit "exotic". The way we all like it! :)
>
> -- 
> electronically yours, jesper
>
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