Akashic Guitar effects circuit lookup
GAINBASSMIDTREBLEMASTER

Enclosure not stated · 5 knobs

Tagboard Effects

Catalinbread RahVerified

Based on the Catalinbread RAH· 6 other boards clone it

Category
Distortion
Controls
Gain · Bass · Mid · Treble · Master
Build
Vero· 19×18· 21 cuts, 6 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Catalinbread, Distortion, Overdrive

From the post

The marketing: The Catalinbread RAH was built specifically to nail Jimmy Page's gigantic guitar tone from Led Zeppelin's legendary 1970 performance at Royal Albert Hall. At the time, in contrast to the Marshalls that he eventually came to be associated with, Page was using Hiwatt heads on stage, modified for a bit of extra gain. The resultant sound, as captured in the Royal Albert Hall concert DVD, is enormous, and the dynamic range from these high-headroom amplifiers is nearly symphonic. With the Catalinbread RAH overdrive pedal, our good friends at Catalinbread have managed to squeeze the distinctive "Jimmy Page Hiwatt" tone into a compact stompbox. Starting with their WIIO pedal as the foundation, and combining some elements of the Dirty Little Secret, Catalinbread delivers a unique overdrive pedal that will reward the player who appreciates articulation, real dynamics, and a very amp-like response. The Catalinbread RAH is an ideal foundation overdrive pedal; just set-and-forget, using your fingers and your guitar's volume knob to bring forth a spectrum of organic, blooming guitar tones.

[24th May 2014 - new revised layout]

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 32 rows

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RefValueNormalizedTypeNotes
Resistors 9
×1130R130read from the layout by eye
×11K1kread from the layout by eye
×63K33.3kread from the layout by eye
×210K10kread from the layout by eye
×222K22kread from the layout by eye
×162K62kread from the layout by eye
×3100K100kread from the layout by eye
×2220K220kread from the layout by eye
×41M1Mread from the layout by eye
Capacitors 12
×147p47pread from the layout by eye
×1220p220pread from the layout by eye
×21n1nread from the layout by eye
×22n22.2nread from the layout by eye
×13n33.3nread from the layout by eye
×347n47nread from the layout by eye
×2100n100nread from the layout by eye
×1220n220nread from the layout by eye
×1680n680nread from the layout by eye
×210u10uelectrolytic; read from the layout by eye
×222u22uelectrolytic; read from the layout by eye
×147u47uelectrolytic; read from the layout by eye
Diodes 3
D19V1 zener9V1read from the layout by eye
D29V1 zener9V1read from the layout by eye
D39V1 zener9V1read from the layout by eye
Transistors 3
Q1BS170BS170MOSFET; read from the layout by eye
Q2BS170BS170MOSFET; read from the layout by eye
Q3BS170BS170MOSFET; read from the layout by eye
Potentiometers 5
GainB500KB500kPotentiometerread from the layout by eye
BassA500KA500kPotentiometerread from the layout by eye
MidB100KB100kPotentiometerread from the layout by eye
TrebleB250KB250kPotentiometerread from the layout by eye
MasterA250KA250kPotentiometerread from the layout by eye

Other boards based on the Catalinbread RAH