Akashic Guitar effects circuit lookup
FUZZVOLUME

Enclosure not stated · 2 knobs

Tagboard Effects

Roger Mayer SpitfireVerified

Based on the Roger Mayer Spitfire· 3 other boards clone it

Category
Distortion
Controls
Fuzz · Volume
Build
Vero· 18×11· 9 cuts, 3 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Distortion, Fuzz, Roger Mayer

From the post

Info from Roger about his original:

The Roger Mayer Spitfire is the latest fuzz guitar effect in the Rocket Series and has been deliberately designed to produce the classic triode tube type distortion that is particularly rich in harmonics that are very musical and pleasing to the ears. This basically means that chords can be used at high levels of distortion without sounding raucous or just plain nasty, as would be the case with other types of fuzz boxes. The Spitfire maintains the guitar's original tone characteristics with the open sound, detail and sonic heritage that have their roots in my association with the making of Jimi's recordings. I have added a few new design twists and coupled with my extensive knowledge from the retro fuzz and distortion boxes we already produce have come up with a new sounding modern distortion/ fuzz sound that does indeed sound fresh and distinctive and not just another boring reissue or clone of a 30 year old design. It has definite advantages that will appeal to those players who strive for a modern sound with strong roots in the past. The Spitfire is a very Low Noise analogue high gain design, stable, free from radio and other electronic interference that cause so much trouble. It has a greatly increased output level that enables it to overdrive the front end of any amp very hard. Turning up the Gain or Drive control will produce feedback at very low sound levels and a virtually never ending sustain that is very full and tight with the top end staying sweet encouraging soaring string bends and wild solos. The overall EQ has been carefully developed to produce a well-rounded fatness and musical tone, not the nasal or fizzy thin type of fuzz sound that is common with digital modellers, multi effects etc. Analogue circuitry really does sound better when it comes to high gain low noise situations; there is no contest. The unit really comes into it's own during live performance situations as it cleans up superbly well using the guitar volume control whilst maintaining the guitar's original tone as the signal goes from wild distortion to the original guitar tone. This effective control from the guitar makes life a great deal easier for the live player who likes to change tone effortlessly from his axe. The Spitfire even when used at high gain levels maintains a very clean transition from note to note that is transparent and free from the usual nasty type of spitting sounds heard so often when the signal decays and a new note begins. This of courses encourages fast solos with lots of sustain that actually sound louder due to the fact that the spaces between the note are not filled up with mush and noise. The circuit senses and uses electronic information fed directly from the guitar's pickups to control it's own operational parameters and it is recommended to use the Spitfire 1st in the signal processing chain to take full advantage of this internal feedforward feature. It is this particular feature of the Spitfire

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 20 rows

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RefValueNormalizedTypeNotes
Resistors 8
×22M22.2Mread from the layout by eye
×247K47kread from the layout by eye
×139R39read from the layout by eye
×1680K680kread from the layout by eye
×122K22kread from the layout by eye
×1100K100kread from the layout by eye
×11K51.5kread from the layout by eye
×110K10kread from the layout by eye
Capacitors 7
×22u22.2uelectrolytic; read from the layout by eye
×122u22uelectrolytic; read from the layout by eye
×1100n100nread from the layout by eye
×11n1nread from the layout by eye
×12n22.2nread from the layout by eye
×122p22pread from the layout by eye
×1470p470pread from the layout by eye
Diodes 1
×21N41481N4148D1, D2; read from the layout by eye
Transistors 1
Q1BC549CBC549Cread from the layout by eye
ICs 1
IC1LM301ANLM301ANlegend: IC is LM301AN; read from the layout by eye
Potentiometers 2
FuzzC10KC10kPotentiometerRev Log; read from the layout by eye
VolumeA47KA47kPotentiometerread from the layout by eye

Other boards based on the Roger Mayer Spitfire