3Leaf Audio - Wonderlove Envelope Filter

drbob1 · Post by **drbob1** » 14 Feb 2013, 23:14

From the name and the controls makes me wonder if it's a subset of the Meatball? Missing the high pass filter and some slight functionality in the other switches. Sounds killer and at $269? Price seems VERY right.

pedalgrinder · Post by **pedalgrinder** » 15 Feb 2013, 09:07

buy one and trace and put it on here.

Nocentelli · Post by **Nocentelli** » 15 Feb 2013, 15:31

Yeah, I'd also put money on it being a Meatball. I assume that the "band" switch is for LP/BP, and not "bandwidth" like the Meatball. I can see why they've
left off the HP mode, as it's a bit of an extreme "niche" sound, but I do find the bandwith switch helps set the envelope triggering, which can be tricky - Maybe they've improved the envelope detection section and made it unneccessary?

FunkySpence · Post by **FunkySpence** » 28 Feb 2013, 09:07

The filter section of the Wonderlove is very similar to the Meatball/Mutron. The detector circuit is somewhat unique. It's all surface mount - I'd be seriously impressed if you guys traced it. Here's a gut shot:

~arph · Post by **~arph** » 28 Feb 2013, 10:11

Well now, that looks very good!

FunkySpence · Post by **FunkySpence** » 01 Mar 2013, 02:36

Thanks. It's been a while since I designed the PCB, but from looking at it I can tell you that all the stuff near the power jack is related to the relay switching (the big white box, of course, is the relay). One of the quad op amps on the lower edge of the board is the state-variable filter which is controlled by the LED/photocell arrangement on the right. No goop, so anyone who's motivated enough could probably trace it out.