Akashic Guitar effects circuit lookup
GAINPRESENCEDEEPTREBLEBASSMIDVOLUME

1590BB · 7 knobs

Effects Layouts (blog)

Diezel VH4Verified

Based on the Diezel VH4· 6 other boards clone it

Category
Distortion
Controls
Gain · Presence · Deep · Treble · Bass · Mid · Volume
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Diezel, Distortion, Preamp

From the post

Gotten a lot of requests for this one and I finally bit the bullet and laid it out. It's the pedal version of the 3rd channel on Diezel's VH4 amplifier with loads of tonal control and tons of gain on tap. Originals are buffered effects, with the input jack wired to the In pad, and a DPDT footswitch selecting between the Out and Buffer Out pads (footswitch wiring diagram below). You can also wire it for true bypass if you prefer and just ignore the Buffer Out pad. The pedal can also be used as a standalone preamp with the Power Out going to the input of a power amplifier (the return jack of an amp's effects loop). It's designed to run off a 12 or 18 volt supply, but it will apparently work just fine of a 9 volt supply (and if planning on going that route, I'd omit the regulator and jump its in and out pads). Also, the indicator LED can be hard mounted to the board, and the whole layout will fit nicely in a 1590BB. Schematic and discussion on FSB here.

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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 44 rows

Report a wrong parse

Got parts in a drawer? See what you can build with them.

Check before you build · 1 value the reader of this layout was not sure of
  • LED drawn on the board (red, row Q-R, column 13) is labelled only LED, no type or colour stated
RefValueNormalizedTypeNotes
Resistors 16
×5220K220kread from the layout by eye
×5100K100kread from the layout by eye
×410K10kread from the layout by eye
×31M1Mread from the layout by eye
×2470K470kread from the layout by eye
×21K1kread from the layout by eye
×210Ω10read from the layout by eye
×147Ω47read from the layout by eye
×1100Ω100read from the layout by eye
×12.2K2.2kread from the layout by eye
×14.7K4.7kread from the layout by eye
×139K39kread from the layout by eye
×156K56kread from the layout by eye
×1150K150kread from the layout by eye
×1680K680kread from the layout by eye
×11.5M1.5Mread from the layout by eye
Capacitors 12
×147pF47pread from the layout by eye
×3100pF100pread from the layout by eye
×1560pF560pread from the layout by eye
×11nF1nread from the layout by eye
×22.2nF2.2nread from the layout by eye
×14.7nF4.7nread from the layout by eye
×422nF22nread from the layout by eye
×1330nF330nread from the layout by eye
×41uF1uelectrolytic; read from the layout by eye
×32.2uF2.2uelectrolytic; read from the layout by eye
×210uF10uelectrolytic; read from the layout by eye
×547uF47uelectrolytic; read from the layout by eye
Diodes 3
×41N41481N4148printed 4148; read from the layout by eye
×21N52321N5232 / 5V6zener, printed 5232; read from the layout by eye
×11N58171N5817printed 5817; read from the layout by eye
ICs 5
REG1LM2940CT-12LM2940CT-12regulator; read from the layout by eye
IC1OPA2134OPA2134read from the layout by eye
IC2TL072TL072read from the layout by eye
IC3TL072TL072read from the layout by eye
IC4TC1044SCPATC1044SCPAcharge pump; read from the layout by eye
Potentiometers 7
GainA250KA250kPotentiometerread from the layout by eye
PresenceC25KC25kPotentiometerread from the layout by eye
DeepC25KC25kPotentiometerread from the layout by eye
TrebleB250KB250kPotentiometerread from the layout by eye
BassA1MA1MPotentiometerread from the layout by eye
MidB25KB25kPotentiometerread from the layout by eye
VolumeA10KA10kPotentiometerread from the layout by eye
LEDs 1
×1??on the board, value not given; read from the layout by eye

Other boards based on the Diezel VH4