Akashic Guitar effects circuit lookup
GAINTREBLEBASSMIDSVOLUME

Enclosure not stated · 5 knobs

Tagboard Effects

Wampler Black 65Verified

Based on the Wampler Black 65· 2 other boards clone it

Controls
Gain · Treble · Bass · Mids · Volume
Build
Vero· 18×18· 20 cuts, 3 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Amp Emulation, Overdrive, Wampler

From the post

A few requests for this so I thought I'd better get it sorted. Info from Wampler about the original:

Over the years, we've had tons and tons of folks asking us when we were going to produce an overdrive pedal that emulates the sound of a cranked Fender amp.

When Brian decided that he was going to see if he could do it, he wanted to ensure that it was perfect. Looking back at it now, we think he must have spent a good 9 months breadboarding and prototyping lots of different ideas, a/b-ing each one with various Fender amps, tweaking and changing until he found the sound that was accurate.

Once he got a sound that he was 100% happy with, he took it to Nashville studio ace Brent Mason to test it out. To be certain, Brian also took several pedals by other companies that are supposed to do the same thing. Brent knows Fender amps better than anyone, and Brian knew if Brent thought it was good, we were onto a winner. Long story short, Brent LOVED it!

We've heard guys say they hear The Twin, some say Vibrolux, some say Deluxe Reverb when they play this pedal. Whatever they hear, it still has that "Blackface" type of sound that we were looking for. When you turn it up, it's going to break up more like the amp would if you turn it up.

With the additional of the boost switch, you can increase the gain to make it sound like the amp is being driven harder.

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 27 rows

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RefValueNormalizedTypeNotes
Resistors 8
×55K65.6kread from the layout by eye
×410K10kread from the layout by eye
×41K1kread from the layout by eye
×41M1Mread from the layout by eye
×2240K240kread from the layout by eye
×110R10read from the layout by eye
×122K22kread from the layout by eye
×168K68kread from the layout by eye
Capacitors 9
×3100p100pread from the layout by eye
×3220n220nread from the layout by eye
×2100n100nread from the layout by eye
×21n51.5nread from the layout by eye
×21u1uread from the layout by eye
×11n1nread from the layout by eye
×12n22.2nread from the layout by eye
×247u47uelectrolytic; read from the layout by eye
×1470u470uelectrolytic; read from the layout by eye
Transistors 4
Q1J201J201JFET; read from the layout by eye
Q2J201J201JFET; read from the layout by eye
Q3J201J201JFET; read from the layout by eye
Q4J201J201JFET; read from the layout by eye
Potentiometers 5
GainA500KA500kPotentiometerread from the layout by eye
TrebleB25KB25kPotentiometerread from the layout by eye
BassA100KA100kPotentiometerread from the layout by eye
MidsB2KB2kPotentiometerread from the layout by eye
VolumeA100KA100kPotentiometerread from the layout by eye
Switches 1
BoostDPDTDPDT2 position; read from the layout by eye

Other boards based on the Wampler Black 65