Hi folks, my A-131 exponential VCA was bought in September 1998 (no idea when it was built. PCB says it´s a version 2 from 1996). It also uses the PA382. (the other two ICs are Texas Instruments´ TL062) Look on the PCB (frontplate facing to the left): -below the PA382 you can read: LIN:3381 LOG:3382 The module overview of my owner´s manual (NOT the service manual) says "...built with CEM3381 / 3382" So is the PA382 the same chip as the CEM3382 but with another name? Or is it a totally different IC? Dieter, please help! another look on the PCB: -above the PA382 I can find a blank field marked "ST2" with ten solder points (actually that´s two pairs of five solder points marked: + / ground symbol / triangle symbol / CV / - ) -to the lower right of the PA382 there´s a solder point marked "JOUT / BOARD 2" . Florian, you said that you can modify the A-130/131 into two VCAs when they use CEM chips. Is it then possible with my VCA with these solder points ?? bye, Paul Julian wrote: > >>The new 130/131 uses CA3080 OTAs (like the 132 always did). > > > Dont the 130/131s use the PA382? Mine do, but i dont know what date they > were made. > [...] > > Theres a lot of opamps out there. The ICs on the 130/131s are certainly > socketed (the 132 is soldered in).
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[Doepfer_a100] Re: Noisy A-131 VCA >> opamps
2004-02-05 by Paul Schulz
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