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PostPosted: Sun Oct 07, 2018 11:46 pm 
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Joined: Fri Sep 15, 2017 12:50 pm
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Hi, i might be asking too much but is it possible to fit that kind of circuit in a 1590a enclosure. It would basically be a muff circuit (which one??) with a drive, level, tone controls and a dry switch (could be internal). Anybody can help?


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PostPosted: Mon Oct 08, 2018 10:37 am 
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Joined: Fri Sep 11, 2009 9:42 pm
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Location: Brewtown, USA
BYOC makes a 1590A muff kit. Tweak a few component values and it'll be well-suited for bass. Google "Bluebeard muff" or "GGG Tuned Muff" for the schematic version that many bass players seem to think is the best version for bass.

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I want Pterodactyl sounds dammit, not a nice little analog sustain.


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PostPosted: Sat Aug 31, 2019 12:38 pm 
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Thank you so much for the response. How about having a dry switch?


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PostPosted: Fri Sep 06, 2019 1:58 pm 
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Location: Brewtown, USA
I guess that depends on how good you are visualizing 3D spaces, and how accurately you can drill. It should be possible to fit the muff circuit, 3 pots, a buffer/splitter/combiner board, and another switch or pot in a 1590A, but you might need to do a custom PCB layout or move to SMD components.

If it were me, I'd be looking at a buffered splitter before the muff circuit, with one output signal going to the muff, and the other going thru a clean boost tailored to match the muff's max output. That output would be controlled by a level pot before being recombined with the muff signal path at the output. You could do it all with a quad opamp and a handful of resistors and caps. But cramming it in a tiny box like that? Not for amateurs :twisted:

EDIT: for an opamp clean boost, along with the 2-ch splitter and the combiner, you'd need 5 opamps. Bummer.

1 = input buffer
2 = Channel A Send (clean)
3 = Channel A Boost
4 = Channel B Send (muff)
5 = Combiner / Output Buffer

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Muad'zin wrote:
I want Pterodactyl sounds dammit, not a nice little analog sustain.


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PostPosted: Fri Sep 06, 2019 2:11 pm 
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Location: Soddy Daisy,TN
A green Russian muff needs no tweaking if you wanted to go that route in addition to, because I know you’re gonna want to build them all once you start.


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