JPTR FX Kaleidoscope

 Traced by Jordan Fontaine.

Schematic is avaiable HERE.

 

BJFe Universal Reverb V2 / Capitalist Death Cult Actual G*ddamned Springs

 Heavily modified revebr unit by BJFe, treated by Chris Stelloh.

 

A couple of the tweaks are from Björn - in particular, the 2k2 resistor from the source of Q1 to ground. Lowering that value fixes a volume drop that can happen when the 50k dwell pot is maxed. I replaced the second dwell pot with a 10 ohm fixed resistor, so that it is almost at maximum. I also added a flat-mids BMP tone control and BC337 recovery stage that sounds really great paired with this circuit. Using a PN3269a in Q2 can squeal with feedback (a GOOD thing in my world) so dialing in the 10k output trimpot is a necessary step. It is possible to set it so that it only howls when the dwell+mix are turned to maximum. The charge pump is something I redrew from an old tagboard layout. The 555 doubler puts out 30mA of current which this verb circuit needs most of (the schematic says it draws around 20mA, and that was before I added the extra transistor) no matter what voltage you are running it at.

 

Dead Astronaut Chasm Reverb

Schematic is avaiable HERE.

Grind Custom Fx Tenebrion Reverb

 Based on the Box of Hall circuit but tuned a bit darker and wider range for the Tone and Feedback controls.

Schematic is avaiable HERE.

Madbean Headtrip 2

Once again, a guest appearance. Chris at CDC was brave enough to dabbling with some Spin FV-1 processors. Yes, these are SMD parts there is several vendors online that sell adapter boards.

 This one is VERIFIED.

 

Since I started building effects in 2020, there has been a "level up" step I've been avoiding. As the level digital signal processing that is available through industry standard effect makers like TC Electronic, Boss, Line 6 and Strymon filters down to the DIY/hobbyist level - there really is no excuse for not at least TRYING digital signal processing.

The most commonly available engine of these DSP effects is the Spin FV-1 reverb processor. They are about $10-$15 each and have 28 tiny little surface mount legs that need to be soldered to tiny little pads on the circuit board without any bridging. So I've been squeamish and avoided them. Until now (dun dun).

After about 3 years of doing this I felt like my dexterity and soldering iron proficiency had progressed to the point where I shouldn't put this off any longer. I also MUST thank DK pedals for their tutorial that was a serious confidence builder.

This effect contains that chip - soldered to an adapter board designed by MAS Effects, which is attached to my stripboard layout of the Madbean Headtrip 2 FV-1 project. It also contains the algorithm chip from that project featuring the presets designed by Brian of Madbean..

The 5 knobs are for dry and effect level, as well as three parameters that change with each effect preset. There's a lot to cover with this pedal, which is why my video is about 5 times longer than anything I've posted so far... if you make it through all 8 clips, I salute you!!!

Mode 1: Choir - similar to the EQD organizer, with the controls condensed to three knobs: octave down, octave up, and choir (which has a slight delay on the signal)

Mode 2: Filter+Octave - an envelope follower that is controlled by knobs 1&2, with an octave up and down dialed in by knob 3.

Mode 3: Detune+Tremolo - this is similar to the "detune" mode on the Whammy pedal. Its's a faux chorus of sorts. Knobs 2&3 control the speed and depth of the tremolo

Mode 4: Flangecho - an 850ms delay. Length and repeats are knobs 1&2, flanging level in the repeats is knob 3.

Mode 5: Echo+??? - a 975ms delay. Knobs 1&2 are the same as mode 4. Knob 3 controls a multi effect that goes from modulation to buzzy ring modulation to tremolo in the repeats.

Mode 6: Flangeverb - knob 1 is the reverb level, knob 2 is the low cut, knob three blends in a similar flange modulation as on mode 4.

Mode 7: Choirverb - a "shimmer" reverb with verb level on 1, low cut on 2, and octave up & down on knob 3.

Mode 8: 4th/5thverb - reverb level on knob 1, 4th down on knob 2, 5th up on knob 3. This doesn't show quite as much on the video but this is definitely the most organic/analog synth-sounding patch of these 8 (in my opinion)

Now the footswitches: the left switch is a "master on/off" that bypasses the entire circuit.

The right switch kills the input to the effect chip and allows the reverb/delay/choir to trail off naturally. HOWEVER - this will keep the dry blend knob in play and depending on where you have it set, this knob can boost the heck out of your signal. Which can be a good or bad thing... up to you.

Are any of these sounds "usable"? That's a matter of taste, of course, but at the very least, NONE of them are delicate. Thanks for reading this far...

-Chris, CDCE

 

J Rockett Boing Reverb

 Schematic is avaiable HERE.

Box of Hall

 Another request by Ian.

The "Heaven within" mod is included as well as a feedback control for infinite reverb.

 *edit' 220421* Layout updated and verified. Thanks Ian!

 

...and a demo by Ian! 

 

Electronic Audio Experiments Beholder

 Another request. Here is something quite different; sort of a distressed sounding reverb/fuzz/noisebox. Schematic is avaiable HERE.

EarthQuaker Devices Levitation Reverb

 Feeling much better today so I was able to do some layouts. Thanks for all the kind posts and email I've recieved! It really helped keeping the spirit up!

First up is another EQD circuit, a quite tweakable reverb. Schematic is avaiable HERE.

3 Verb

 Per a request from Ian. A fairly simple reverb sold as a kit from Musikding in Germany with an adjustable Dwell control across the pins of a Belton 3H brick. 

Schematic is avaiable HERE.

 

 

Bluff Chill Devices Ectoverb V1

 Wanna build reverb without a bulky Belton brick? Bluff Chill Ectoverb got you covered. This one is using two PT2399 ICs in series to achieve a quite murky, spacey and lo-fi reverb. Schematic and more info HERE.

BJF Analog Reverb

 Schematic avaiable at Moody Sounds.

Spaceman Effects Orion Reverb

 Per request. 

Note that he relay bypass switch circuit is omitted.  Based on schematic from Dead End Fx.

Lastgap Art Laboratories Misty Cave

 A biggie but it will fit a BB enclosure without battery. If you think this is to big for vero, Deadend Fx have excellent PCBs for this circuit and many other cool designs.

Schematic is avaiable HERE.

Sentinel

 

 

 

Dead Astronaut Timestream Reverb

 A simple delay with both subtle reverb tones as well as oscillation reverb....

Schematic HERE

 

 

VFE Springboard Reverb

Death by Audio Reverberation Machine

Earthquaker Devices Ghost Echo