Saturday, 26 May 2018

Bixonic Expandora

An old circuit that was missing from the main page.
There was a layout by Harald Sabro in the forum section but this one should be easier to build.
I've taken the "Bite" control from Codtone's Expandra.
You can remove it by adding a link between Bite 3 and 2.

Thursday, 24 May 2018

Rostex Turbo Metal

I've heard that in 1991 former Lell engineer went on to form a new company called Rostex. At least that's the rumor and i have no other information about the brand or the pedal. You know anything about these (or have a demo clip/video), please do post it in the comment section.

For the layout, in addition to adding series polarity protection and input pulldown, i subbed the output buffer FET to common 2N7000 pinout.

4-knob version:
And the  3-knobbed version:
(Edit 25.5.2018 23:31: fixed a fault with low wiring and added the 3-knob layout)

Wednesday, 23 May 2018

ProCo Solo

From the source:

The SOLO is the newest member of the Pro Co family of stomp boxes. Although it is housed in the same indestructible and road worthy steel enclosure that has come to be a trademark of Pro Co stomp boxes, the SOLO marks a departure from the RAT series of pedals in more ways than just the new cosmetics. With its enormous range of tones, 3 way selectable “hot, melt, & burn” modes, and highly interactive “scoop” and “tone” controls, the SOLO just might be the most versatile pedal in your arsenal.  

Don’t let the name fool you, the 100% analog SOLO is no one trick pony. It is equally at ease in both lead and rhythm capacities, and with a wide variety of amplifiers and guitars. Capable of going from vibey, chewy, warm low gain tones, to deliciously mean and crushing high gain tones, the Solo still remains remarkably true to the sound that matters most: The sound of you and your guitar. And speaking of staying true to the sound of your guitar, true-bypass switching ensures that when the pedal is off, there is no coloration of your sound.  

 Even in its highest gain settings, the SOLO remains extremely tube-like, articulate and touch sensitive. Complex chords ring out with clarity, leads sustain with ease. Roll back your volume knob and it cleans up, just like a good tube amp would.  The solo uses three pairs of carefully matched (or should we say, carefully mismatched) clipping diodes to produce asymmetrical clipping. The three pairs are accessible via the “hot, melt, burn” slider switch. This has the effect of making the SOLO clip very much like a tube amp going into natural power tube distortion.

You'll notice there's plenty of room to add 3 more clipping options if you want to use a 6 position rotary switch.

Sunday, 8 April 2018

FV-1 Pedal

BuGG from has created an EZ FV-1 module for vero layouts.
It is available here:
This is what he wrote about this circuit in our Forum / Requests section (schematic available there):

"This is a fairly straightforward single-algorithm FV-1 circuit, it would be a nice starting point for learning how to work with the FV-1.
For easy stripboard building the PedalPCB EZ FV-1 module is available, a through-hole FV-1 module for stripboard/breadboard layouts.  (ready to use, no SMD soldering required)
The pin spacing is standard 0.1" x 0.6" so it can be handled like a standard PDIP-28 (WIDE) IC.  

The 24LC23A must be loaded with an algorithm in bank 0, although multiple switchable programs are possible by pulling pins 16, 17, and 18 high (corresponding to the binary encoded bank number).
The internal algorithms can also be used by grounding pin 13.
There will be pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well."

... and a more "experimental" version:

Saturday, 3 March 2018

Vertex Steel String

Original info:
"The Steel String Clean Drive faithfully recreates the tonality and feel of the iconic Dumble Steel String Singer amplifier in a stompbox format. Designed alongside a real Steel String Singer (#001), this 100% analog tone tool will do it all from Overdrive, to Fat Boost, to Compression, to EQ shaping and more. Get the unmistakable Crystal-Clear Overdrive and Fat Clean Tones from albums like "Texas Flood", "Venus Isle", and "Continuum" through any clean amp platform"
You can find Bugg's PCB and schematic here.