Tools, Tones and Toys for Guitarists
Yes, it’s another MKI. I designed this layout based on a Zonk to fit a specific enclosure width. So nothing remarkable, just one for me to use later. MKI TONE BENDER – SHORTY It’s missing the 33k resistor that normally sits across the 50k pot, cause I like to use an A25k instead. I sometimes … Read more
One that I’ve probably overlooked a little, given its place in the early history of English fuzz pedals – which was likely inspired by the Maestro… There was a three-transistor version prior to this called “Fuzzy” which by all accounts is a Maestro. The later versions dropped the input buffer and made the jump from … Read more
One of my projects – just a MKII layout built to suit a particular enclosure and layout style that I’ve been working with lately. The board is just the right size for this enclosure. Most of the assembly is done on a wiring jig first, before transferring it into the enclosure – would be a … Read more
Ignoring the gigantic and overly complicated trem section – this is one of my favourite sounding AC amps, which is most likely the inspiration for the Matchless DC30 pentode channel. VINTAGE VOX AC-15 SCHEMATIC Version: NO V-1-5 / OA/031 Apparently this schematic is a v3, redrawn by Thomas Organ, with some different component numbering. … Read more
The Vox AC6 is a departure from the Vox AC2 & AC4, in that it has a 12AX7 preamp, negative feedback, no trem, and for some reason, the tone control is before the first triode – it’s a bit of an odd-ball in the Vox lineup from the time. The 12AX7 preamp arrangement would give … Read more
Another early Vox model is the AC2. It’s often described as being the same as an AC4, but there is one key difference — the tone control. Instead of sitting in the preamp like the AC4, the AC2’s tone control is wired in the power stage, between the EL84 plate and the B+ supply (effectively … Read more
Despite the name – and even the familiar look – the original Vox AC4 has very little in common with the modern “AC4” amps wearing the same badge. The cabinet and the single EL84 output stage are about all they share. The AC4 started life as the AC2 in 1958. Fair to say that the … Read more
Documenting another Bell & Howell amplifier conversion. While it has a different model number and a shiny red faceplate, it’s the same amp as the 621 and others in the series. Quite often, variations of the model number has more to do with the projector than the amp. BELL & HOWELL 622 PROJECTOR AMPLIFIER Stock … Read more
The Colorsound Overdriver / Power Boost family went through a few different versions over the years. This layout is for the classic 1971 9V Overdriver version – essentially the 9V successor to the earlier 18V Power Boost, with the same basic three–transistor topology but set up for a standard single-supply pedalboard. It makes a huge, … Read more
Sorry it took so long… apparently this can be tricky to make, so hope it goes well. Maybe breadboard it first. SELMER BUZZTONE 0.15″ VERO LAYOUT