DGWVI
Well-known member
This one's a twin formant filter type deal, so you can make your guitar spit vowels and maybe some expletives. MadBean's HoneyDripper 2015 board.
Stock it's a great circuit, though it does have its limitations which I've tried to mitigate with a handful of mods. There are some other things I'd like to try, but I want to wait until I can get my hands on a few more PCBs before experimenting any further, so I can compare and contrast.
So, the mods I've done are
Anyway, here's the demo. I'm just waking up, so it's pretty meh. I'll probably get a better one done later today
EDIT- I knew the power supply I was using was shit, but didn't realize it'd added all the weird extra noises
Stock it's a great circuit, though it does have its limitations which I've tried to mitigate with a handful of mods. There are some other things I'd like to try, but I want to wait until I can get my hands on a few more PCBs before experimenting any further, so I can compare and contrast.
So, the mods I've done are
- R1 (100K) replaced with a 1M trimmer have it set for 1M in the vid. This is to increase input impedance, and while subtle I do enjoy it
- R5- has been increased to 270k for more input gain
- R6 has been increased from 4.7k to 270k to give it more zippiness (according to Mark Hammer, though he suggests 220k). Definitely gives it a little something extra
R9- has been replaced with a 250kB pot, I'm calling this balance, as it adjusts the amount of signal going into the lower tuned filter. Highly interactive with the sweep pot, also effects decay timea bit- R18 is 2.2k because that's what I grabbed
- R44 (4.7k) has been added between pin 1 of the Sweep pot and ground to limit the signal dumped to ground and increase the usable range
- Sweep pot has been changed to Anti-log taper from linear. Value remains 10k
- C1 has been increased to 27n to allow more into the circuit
- C2 has been decreased to 1n to raise the cutoff of the clipping circuit
- D3 & D4 have been changed to BAT46 for a bit more sensitivity
- IC1 is LM1458, though TL072 works great here as well
- IC2 & IC3 are currently TL974, though I'm still experimenting with those. The 974 seems a bit dirtier than the 324
- Edit- I copy and pasted from my notes app, and didn't catch it. R9- is stock. R22 has been swapped for a pot to effect the gain of the first peak detector. Guess I'll need to relabel that pot
Anyway, here's the demo. I'm just waking up, so it's pretty meh. I'll probably get a better one done later today
EDIT- I knew the power supply I was using was shit, but didn't realize it'd added all the weird extra noises
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