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StephengilesMemberQuote:Thanx. How can I check that?
Try Scruffie if he’s about.
StephengilesMemberYou could try one the many electret mic capsules available on ebay, but you might need to increase the gain on the preamp.
StephengilesMemberQuote:Thanks a lot. I bought a 24 Volts Ac-adapter but my unit doesnt work. Whats the most common problem with this pedal? I checked all solderings and all cables inside and they seemed OK.Blown CA3094 chips perhaps?
StephengilesMemberThe start/stop idea goes way back to late 1970s!
StephengilesMemberI’m guessing that S4 might have been for some kind of reset button for the filter control voltage – a footswitch perhaps which when activated, energises a fresh filter sweep from it’s start frequency – just a guess mind!
However, I’m told that it uses an LM339 like quad differential comparator with a quad cmos switch as well as a plethera of opamps for good measure – a far cry from the average autowah so I would be inclined to leave well alone!!
StephengilesMemberQuote:Ah, nice, so those EH1048s make up the clock somehow. I was thinking I was looking at a bunch of op amps. I’ll see if I can figure out where I can inject an external clock into the mix.No, the EH 1048s will be most likely be used as VCAs or similar.
StephengilesMemberThe EH 1048s are really CA 3094s and not easy to replace these days, although EH may still have a stock.
StephengilesMemberI have schematic for DRM 16 which uses a CD4040 for the clock and 74s474 for trigger generation (I think), but I can’t remember how similar this was to the DRM15.
StephengilesMemberAnd dynamics that follow the input!
StephengilesMemberQuote:https://www.ehx.com/assets/instructions/super-pulsar.pdf…with mouth still open!
Hats off again.
Can’t wait to play with that one!
(please give us that functionality on a thru zero flanger!)
your the best
d
…..preferably with a “zero comparator”………!!!
December 26, 2014 at 3:07 pm in reply to: Control circuitry of Enigma Q Balls as stand alone controller #120449StephengilesMemberAha, I think there’s a fiendishly clever switching sequence afoot in this unit!!
November 6, 2014 at 8:00 am in reply to: The What Is The Current Draw For That EHX Pedal Thread #120357StephengilesMemberQuote:Quote:Quote:Quote:Enigma Q balls?Thanks,
Neal.Both Enigma and Riddle draw 150mA.
Is the filter response in the Enigma and Riddle the same as in the Microsynth, or does it follow input dynamics with regard to start frequency with a decay sweep independent of input dynamics?
The Enigma and Riddle follow input dynamics creating an envelope follower that modulates the filter. The START knob sets the frequency that is both the start and end point of the filter sweep, this is when you’re not playing or playing very quietly. The STOP knob sets the frequency that the filter hits when the envelope follower is at its maximum output amplitude which is when you are playing your loudest. In between the START and STOP points is when all the filter sweeping occurs.
The Enigma/Riddle filter response is not the same as Microsynth.
Thanks very much.
November 5, 2014 at 8:59 pm in reply to: The What Is The Current Draw For That EHX Pedal Thread #120355StephengilesMemberQuote:Quote:Enigma Q balls?Thanks,
Neal.Both Enigma and Riddle draw 150mA.
Is the filter response in the Enigma and Riddle the same as in the Microsynth, or does it follow input dynamics with regard to start frequency with a decay sweep independent of input dynamics?
July 7, 2014 at 1:01 pm in reply to: Why isn’t it possible to recommission old IC’s like the Reticon SAD1024? #120085StephengilesMemberQuote:The Panasonics are better chips and I think they’d be worth putting the money into.“Better” is a matter of opinion. No BBD in my view sounds as good as SAD 1024!!
StephengilesMemberI have the schematics but am currently on holiday in the Spanish sun! I’ll send you scans when I return home next week.
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