[sdiy] Alesis 1622 power supply

[Tim Ressel]

Hans,

I don't have specific info on that product. However I
can tell you it sounds like a standard Keith Barr
trick: use an AC adapter with a pair of voltage
doublers to get +/- voltage. The Midiverb II is a
similar design and uses a 9VAC wall wart.

--Tim (Alesis expat)


--- xmurz at gmx.de wrote:
> I've got an (old) alesis 1622 mixer but no power
> supply.
> Can someone give me any info on the power supply?
> it looks like it takes 9VAC in the manual but the
> pcb does
> look more like 12V...
> 
> there is an 7912 and an 7912 chip on the pcb...
> 
> Any info is appreaciated.
> 
> - Hans
> 
> 
> 
> 
> 
> 


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