Tools, Tones and Toys for Guitarists
Here’s Jamie’s take on the classic Rangemaster circuit, with a NPN germanium transistor. There’s an added toggle to switch between full range and treble input caps. Probably a tight a squeeze in a 1590A but should be doable. There is also a 1590A specific PCB with board mounted pot and switch in the store now … Read more
Essentially a Rangemaster with a switch selecting the input cap (Hi/Lo) and another switch (Ge/Si) selecting between a germanium or silicon transistor. The bias pot helps to fine tune the bias (imagine that lol) differences between germanium and silicon modes. Other transistors can be used other than what’s specified. Something in the 100-120 hFE range … Read more
Here’s a nice little boost from ROG that originated from trying to design a FET-based Rangemaster treble booster. I’ve laid it out for a 1590a with board mounted 9mm pots. More info, schematic and sound clips can be found here.
Stumbled across this one on the old Smallsound/Bigsound blog. The Sparkle Motion is based on the classic Rangemaster treble boost, but with a lot of extra controls. Schematic and more info can be found here.
Here’s another “Brian May in a box” circuits, this time from Run Off Groove. The May Queen is a treble booster/overdrive that should get you pretty close to those classic Queen tones. The cap between 9v and the drain of Q3 in the layout below is optional. It’s a high end filter, so the larger … Read more
The Vox Treble Booster was a simple silicon treble boost effect that plugged straight into an amp’s input jack. It allowed the user a boost in high frequencies for lead work. I laid this one out to use as a built in effect on a guitar (hence the lack of a power filtering cap and … Read more
From Fuzz Central, this is a modified Dallas Rangemaster treble booster. Uses an NPN germanium transistor so you can daisy chain it with other pedals that run off a positive 9 volt supply.