Acoustic Preamp Design - Preamp & EQ

Wow, the only thing this is missing is dual input. When I had a regular acoustic gig (back in the olden days) I used a Raven Labs PMB-1.
At the time it was the best thing in the market for dual source (Piezo + internal mic) acoustic guitar and bass players.
I don't gig anymore but I've been following the Grace designs stuff. Pricey as hell.
 
MichaelW said:
Wow, the only thing this is missing is dual input. When I had a regular acoustic gig (back in the olden days) I used a Raven Labs PMB-1.
At the time it was the best thing in the market for dual source (Piezo + internal mic) acoustic guitar and bass players.
I don't gig anymore but I've been following the Grace designs stuff. Pricey as hell.
Click to expand...
Pricey as hell is right, that's why I started this whole thing. Felix is amazing, but wow, not worth that price. After years of experimenting with dual-source, I have moved away from that and simply use IR on my piezo pickups. Sounds better, simpler, no feedback issues, etc. Back then I always assumed I'd build the single channel Gamma PreQ first, and then add onto that with a dual source. But now I'm more interested in making a smaller 125b size of this one, call it Gamma PreQ Mini, 7 knobs instead of 10. Same circuit, just delete Boost, Volume and Notch Q knob. IDK, we'll see.
 
Rpschultz13 said:
Pricey as hell is right, that's why I started this whole thing. Felix is amazing, but wow, not worth that price. After years of experimenting with dual-source, I have moved away from that and simply use IR on my piezo pickups. Sounds better, simpler, no feedback issues, etc. Back then I always assumed I'd build the single channel Gamma PreQ first, and then add onto that with a dual source. But now I'm more interested in making a smaller 125b size of this one, call it Gamma PreQ Mini, 7 knobs instead of 10. Same circuit, just delete Boost, Volume and Notch Q knob. IDK, we'll see.
Click to expand...
For sure acoustic IR's have changed the game completely. I have some acoustic IR's that I can run that "almost" make my Tele sound like a J-45.
That's the "aha" moment I had when I realized that all this crazy stuff we do with guitars, amps, pickups, pedals, etc contributes like 5% to the tone. :ROFLMAO: The other 95% is all in the speakers and cabs, and by extension, IR's. (ok that might be an exaggeration....but not by much heh)
 
Here is a *terrible* demo. I thought my iphone would do better, but it doesn't capture what I was hearing at all. When I was demonstrating the notch, it was really feeding back hard, but you don't get that in the video. You can kinda hear the variation in the low end, but the variation in the high end was much more noticeable as well. FWIW. I'll have to setup my audio interface and use a couple of mics sometime in the coming weeks for a better recording.

This video was recorded on an iPhone. Passive guitar pickup -> Gamma PreQ (true bypass mode) -> Line6 L2t (FRFR)
 
You must log in or register to reply here.
Back
Top