[sdiy] DIY mixer/console

[Tom Wiltshire]

+1 for Doug Self’s book. Also be sure to read the history. For example, most of the Neve console designs are online now, so there’s plenty of design “inspiration” available if required!

Tom


> On 30 Nov 2021, at 22:01, Ben Stuyts <ben at stuyts.nl> wrote:
> 
> I have dabbled in it, long time ago. Made every mistake possible, solved only a few of them. I wish that I had Douglas Self’s most excellent book Small Signal Audio Design. Be sure to read chapter 12 and further about mixer architectures, pre amps, signal switching, summing, etc.
> 
> Ben
> 
> 
>> On 30 Nov 2021, at 22:40, Brian Willoughby <brianw at audiobanshee.com> wrote:
>> 
>> Ha!
>> 
>> Over a decade ago, I started designing one for a musician friend, and stopped when the prototype costs got above $1,000
>> 
>> He wanted a rack-top mounted crossfader and the ability to select from at least four sources to assign to each side of the crossfader, plus effects loops for every input. I recall designing for two stereo VCA circuits plus a lot of analog multiplexers for the routing. There would have been support for presets (rather than have everyone mechanically switched).
>> 
>> A lot of analog multiplexers have a maximum headroom of 10 V peak-to-peak, so I was working with Vishay DGxxx series that can handle 44 V peak-to-peak. I've actually seen commercial products with the 10 V pp mix chips, and they would lock up when the input signal exceeded the power rails.
>> 
>> My (unfinished) design avoided any bussing, which is the biggest challenge because that's where noise can significantly accumulate.
>> 
>> Brian
>> 
>> 
>> On Nov 30, 2021, at 09:43, ColinMuirDorward via Synth-diy <synth-diy at synth-diy.org> wrote:
>>> Who here has done or tried it?
>>> Please feel free to share pictures, stories, warnings, etc :)
>>> Cheers,
>>> Colin
>> 
>> 
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> 
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