Messages

1

preenfm2 and preenfm3 / Re: output routing

« on: July 08, 2019, 09:38:19 PM »

...I just saw, that the two 12-bit channels of the MPC4922 are combined for the 18 bit resolution of the output. So my educated guess is: the PreenFM2 is two channel audio out by design.
So I think it would be easier and even cheaper to put two Preens in one housing, for 4-channel FM.

Best,
Omnichordman

2

preenfm2 and preenfm3 / Re: output routing22

« on: July 08, 2019, 09:03:20 PM »

Hi,

I am pretty new to the Preen, and I have the exact same question.
From what I can see on the schematics, the two DAC outputs on the MPC4922‘s, are summed to one op-amp each, so there would at least 2 more op-amps be needed.
I don‘t know if SPI_DAC1 and 2 can send stereo-Data, or if two more SPI_DAC‘s are needed.

Can anyone enlighten us?

Best,
Omnichordman