Akashic Guitar effects circuit lookup
LEVEL

1590A · 1 knob

GuitarPCB

P.U.R.P

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Other
Controls
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Price
$2.95in stock
Tags
sale

From the vendor

The Best Rangemaster PCB available!

Description

The Best Rangemaster PCB available, our Pump’d Up Rangemaster Plus and here is why:

Pump’d Up simply means you can use it in series with all other negative-ground pedals using a Negative Tip Supply.

The Plus means it has the modern mods you need: Switch between Classic Treble Boost, High & Mid Boost or Full Range Boost. Plus Bias adjustment trimmer and Grit adjustment trimmer.

This is our revision of a vintage favorite! We have studied many versions of this classic circuit, and gave it the royal GuitarPCB treatment. Included in this version is a charge pump, which allows you to use a vintage PNP Germanium or Silicon transistor and still share power with your other standard negative-ground pedals, or combine this with another circuit in the same enclosure and share a power source.

The original Rangemaster was a treble booster. This build incorporates (3) different tonal selections. The first will give you classic Rangemaster treble boost. The second setting boosts highs and mids. The third setting boosts the full tonal tonal range of a guitar, or “band pass” setting. With size in mind, the circuit board was designed to fit in a small, 1590A enclosure or larger.

Many still try to find Germanium PNP transistors but we have found Silicon to also work extremely well in this circuit, sound great and be more reliable.

P.U.R.P. Build Document

Note: You may also use TC1044SCPA or TC1044SEPA Charge Pumps. As long a the “S” is after the 1044.

See examples of our top three Pump’d Up projects in the video demo below.

**Audio Demo** below alternatively shows PNP Silicon Transistors in our PUFF circuit.

https://guitarpcb.com/wp-content/uploads/2019/02/BC160-Silicon-PNP-Fuzz-Face.mp3

Phase: Inverted

Schematic

The schematic is in the vendor's build document, page 2. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 20 rows

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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.

RefValueNormalizedTypeNotes
Resistors 5
R11M1M
R2200k200k
R31M1M
R41M1M
R76n8ocr6.8e-09
Capacitors 9
C610n10n
C747u47u
C810u10u
C947u47u
C16n86.8n
C222n22n
C347n47n
C547u47u
C4150pocr150p
Transistors 1
Q1PNPPNP
ICs 1
IC17660S7660S
Potentiometers 1
LEVELA10KA10kPotentiometer
Trimmers 2
TR2‘GRIT’‘GRIT’
TR1allALL
Switches 1
SW1SW1ocrSW1