TK. Posted April 15, 2006 Report Share Posted April 15, 2006 Since months I was thinking about a nice housing for my 4 CEM3378 filters and AOUT_LC modules. Finally I got the idea, that nothing would be easier than just to integrate the modules directly into a mixer. So, I opened my "Eurorack" linemixer from Behringer and was very happy to find enough room for all the boards:As a nice side effect, the PSU is already there. It delivers +/- 15V. I'm using a 7905, 7805 and 7812 to regulate the voltages. The AOUT_LC module is supplied with +12V/-5V (+12V to get enough headroom for the filter CV). Two modules are stocked for best utilisation of the available space in the mixer case:And here the first audible results I got out of a MIDIbox FM / 4*CEM3378 combination:http://www.midibox.org/midibox_fm/PimpMyBehringer.mp3I especially like the bubbling sounds when the filters are in high resonance, and controlled by the LFOs and EG5 :)Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted April 15, 2006 Report Share Posted April 15, 2006 Holy crap that sounds nice :)Great idea too, to put it in a mixer like that! I will remember that trick for my FX, and keep an eye out on ebay for cheap mixers :)TK, do you know if the SSM2044 would be suitable for a similar application? I have a good cheap source of those IC's, but the CEM3378 are very hard to find.... Quote Link to comment Share on other sites More sharing options...
NorthernLightX Posted April 15, 2006 Report Share Posted April 15, 2006 Hi TK,Why do you need -5V? Is it for the AOUT_LC or for the CEM filters?Cheers, Alex. Quote Link to comment Share on other sites More sharing options...
TK. Posted April 15, 2006 Author Report Share Posted April 15, 2006 Yes, the SSM2044 should do the same, a sound comparison could be interesting.Why do you need -5V? Is it for the AOUT_LC or for the CEM filters?It is for the CEM filters, and as the negative voltage is available, I'm also using it for the AOUT_LC module. The CV inputs (of the *external* CEM3378 circuitry -> see datasheet) are working in a range of ca. 1V-7V (CutOff) and 0V-3V (Resonance). In addition to the gain/offset trimmpots of the AOUT_LC module, I'm using 10k trimmpots against ground at the filter CV input side - all 4 AOUT_LC modules deliver the same voltages when the CVs are swept from min to max, and with the additional 10k pots I'm able to fine-adjust the desired maximum resonance and I equalize the CutOff frequencies of all filters on an easier way, than with the non-linear gain/offset potsBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted April 15, 2006 Report Share Posted April 15, 2006 Yes, the SSM2044 should do the same, a sound comparison could be interesting.Thanks TK. I'll order in the next few days :) Quote Link to comment Share on other sites More sharing options...
Artesia Posted December 7, 2006 Report Share Posted December 7, 2006 hmm thats some mighty fine squelchy ambience... reminiscent of the orb's - orbvs terravmbtw stryd, have any luck with the ssm2044's ? Quote Link to comment Share on other sites More sharing options...
stryd_one Posted December 9, 2006 Report Share Posted December 9, 2006 Got a tube of them here, and known-good schematics (thanks to a kind donor ;) ) and I'll be breadboarding and setting them up for midibox control after some other projects are done. Quote Link to comment Share on other sites More sharing options...
AndrewMartens Posted December 9, 2006 Report Share Posted December 9, 2006 I'll be breadboarding and setting them up for midibox control after some other projects are done.Heh, heh, heh... I know how that goes! Quote Link to comment Share on other sites More sharing options...
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