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Posted (edited)

So after years one planning to do this, I finally got around to it.  Here are the results:

Simple TL074 based mixer with stereo pots for each channel that fits to the existing holes.  I've got a handful of boards if anyone would like one and then I'll post a OSHpark link so anyone can get them any time.

Boards:

 

https://oshpark.com/projects/iEI4Yrhq

 

BOM

https://docs.google.com/spreadsheets/d/1w-VEWmPBQucrhK-vZdvH8pU_xwDvS5GS1VtrLofj800/edit?usp=sharing

MBmixer.JPG

Edited by Altitude
  • Like 2
Posted

Correct.  There are 2 ways to wire this in, pre the jack which will just mirror what's coming out of the channel or post jack by puling the 10ks in the passive mixer so the SID pair is removed from the mix when you plug something in

Posted (edited)

I like the feedback as well but its REALLY cumbersome to use the MB6582 with a 8 channel snake out the back.  I used a single supply with TL074 running off the 9V 

 

 

MBmixer.png

Edited by Altitude
  • 2 weeks later...
  • 2 weeks later...
  • 4 months later...
Posted (edited)

I just ordered PCBs from OSHPark - it cost the same to get 3 boards vs 1 ($10.30), so if anyone wants to buy one from me for $3.43+shipping, let me know.

Edited by goyousalukis
  • 2 weeks later...
  • 1 year later...
  • 3 weeks later...
Posted (edited)

Can the TL074D run off 12v in a 6581 SID setup? Or would I need to regulate it down to 9v?

Also, would these be suitable replacements for the dual ganged pots? Are these the same Alphas?

Edited by njosnari
  • 2 years later...
Posted (edited)

Any spare boards kicking around? Or anyone else keen on 1? May place an order from OshPark (3x min).  Props @Altitude for putting this together

 

Edited by casius
Props due

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