SSM2044 PCBs - 2nd run.

[werock]

Bit of a long shot, but has anyone got one of these boards they would be willing to part with? Maybe 1 or 2 tucked away at the bottom of your to-do pile...

[o-live]

hello

what is needed to change for eurorack (+12 -12 v ) application ?

also on schematic you talk about tl084 aop but in part list it's tl074
wich aop i need please ?

thank you so much for your help

[LFLab]

TL074 and TL084 are functionally the same for our applications, as is TL064, the difference is in power consumption, noise and offset, but I wonder if the difference is at all noticeable.

As for PSU voltage, I think mine is running at +/-12v without a problem. Not sure which incarnation of the SSM2044 filter this is, but you have to make sure you tie the low end side of the cutoff pot with a resistor to V- instead of ground. This increases the range, and improves the filter a lot.

[fonik]

for 12V you can optimize the CV response of this circuit by changing only a few components values:

R16=100K
R11=180K
R15,R15'=22k

refer to sounds post from 2006. he achieved 16hz to 16Khz!

[o-live]

ok for the Aop thank you

and sorry i don't have see the 2006 post i go to directly

[o-live]

hello Mathias

i have a question about the gain in input or output

it's possible to have more gain (like a distortion)

wich component (resistor) i need to change ?

i have quite finish the module ,it was hard to find at good price the tempco

thank you so much

[o-live]

hi

for more gain on input i think i can change r13 and connect directly a volume pot 50k

soldering it's finished and i have turn on the module ,and i have an issue

resonnance doesn't work correctly and i search search for wich reason when i turn pots i listen some changement but no resonnances ,just filtering .

i have try to set the trimpot of feedback (self osc) the sound come loud to thin

can you help me for know wich value (v) i need to read on different point of circuit please

in entry i have exactly 12.6v -12,3v

on tl074 11.75v -11.66v
on pin 1 have only 1.71v (with resonnace pot at max and trim pot open if i close i have 0v)

in pin 2 of ssm 2044 i have 1,71v

now i don't know where i need to search

thank for you help