ROG Condor Cab Sim at 12 volts?

[bluesdevil]

Just wanted to ask if I need to do any parts swapping to run the Condor with a 12 volt power supply. I'm throwing my already built circuit into an enclosure with another circuit that's using 12 volts filtered and regulated. Would be very convenient to just tap off it if possible.
     I'm guessing I would just need to adjust the JFET trimmer, but I'm wondering about the ref. divider resistors on the op amp as well.
Here's the schematic:
http://runoffgroove.com/condor.html
By the way, I really love this simulator!! Thanks ROG!!

[km-r]

none... i love this sim too!

im even planning of using a split +/- 9v supply for it to be incorporated in a SS amp's as xlr out.

[bluesdevil]

Thanks Kimar, that's what I was hoping. Good luck with your project!!

[petemoore]

Just wanted to ask if I need to do any parts swapping to run the Condor with a 12 volt power supply. I'm throwing my already built circuit into an enclosure with another circuit that's using 12 volts filtered and regulated. Would be very convenient to just tap off it if possible.
  Some components in a circuit don't see the full supply, filter caps do, emitter caps generally only get a smaller portion of the potential.
  All components should be checked for max voltage, the power applied to them has to be <their rated max.
     I'm guessing I would just need to adjust the JFET trimmer, but I'm wondering about the ref. divider resistors on the op amp as well.
  The bias on the Jfet might 'stretch' and should be checked / reset. The reference divider will divide the supply voltage as accurately as before [to ~1/2v]. A two equal value series resistors [voltage divider] circuit alway will reference to 1/2v.
    Here's the schematic:
http://runoffgroove.com/condor.html

[bluesdevil]

Thanks for the explanations, Pete. I'll definitely double check the components voltage ratings and will be prepared to twiddle the JFET trimmer if needed.
    I'm building up an "all-in-one" selector switch box to record stuff into my computer. Just built a nice RIAA phono preamp for my turntable and thought it would be cool to throw the Condor in there too for the ol' guitar. Also have a few inputs for various tape decks and such..... it's coming along pretty good so far.
     If it comes out looking good I'll post pics in the "picture" thread in a week or 2.

[bamera]

I´ve wondered about 12v too!  I built the condor out of curiosity a few weeks ago and was supprised at how great it sounds. My useless 12" PA speaker is now in full use thanks to the condor, I run it between my FX and power amp. Sounds very very good!!!!

[bluesdevil]

All right, it worked great at 12 volts. I like the JFET trimmer higher than recommended, though. Biased at 10 volts the volume drops a bit, but no crackle type distortion when hitting the strings sharply as noticed at suggested half voltage.
    I'll be good to go as soon as I experiment with implementing R.G.'s PNP transistor power switch thing as shown on the "Pro Vibrato" project. I thought it would be a good idea to have the Condor unpowered when the guitar isn't plugged in to save some current when using the phono preamp. An on/off power switch would be easy, but I'm keeping the outside controls to the barest minimum.
     Thanks everybody.