Akashic Guitar effects PCB lookup
BLENDFBACKGAIN

1590BB · 3 knobs

Fuzz Dog· vengfback

Verb Engine - Feedbacker

Based on the Reverberation Machine· 1 other board clones it

Category
Reverb· Delay/Mod/Filter
Controls
Blend · Fback · Gain
Difficulty
Medium
Price
£48.00
Tags
delay-mod-filter

From the vendor

We detailed a feedback mod for this circuit in the 'standard' version of the kit, and it was so popular we decided to produce this tweaked version with the mod included. Extra zany tonal mischief with very little extra effort.

Not for the easily offended, or those looking for nice, clean reverb. You have been warned!

This piece of work is less a reverb than an unpredictable, untameable texture machine.

Based around the ever-popular Belton 'brick', this circuit twists and tweaks the boundaries of this unit. Controls for reverb level and volume are pretty straight forward. Add the gain control to the mix and things get crazy. The extra signal being mixed with the verb causes all kinds of overloaded, distorted havoc which is both fun and satisfying. Two distinct tone modes are available, giving you dark, cavernous rumbles or bright, spangly twang. Something for everyone, as long as you're a fan of the unusual. Whack on the feedback mod and loose your mind.

You can opt for latching or momentary footswitch for the feedback.

NOTE: This kit does NOT include the Belton Brick. If you need one please order it on this page. The original uses the LONG variant, and for the most fun we'd say stick with that.

Supplied with Lumberg jacks so they'll fit nicely above the pots.

If you want the PCBs without parts there's a link for that at the bottom of the page.

Partial kit: PCBs, all board-mounted components (not footswitches), pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosures. Please choose appropriate knobs.

Inspired by: Reverberation Machine

Difficulty: Medium

PCB size: 80 x 45mm

Knobs required: 4

Enclosure: 1590BB

Download the INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 45 rows

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RefValueNormalizedTypeNotes
Resistors 21
R1100K100k
R210K10k
R31M1M
R41M1M
R510K10k
R622K22k
R71M1M
R81M1M
R910K10k
R10100K100k
R11100K100k
R131K1k
R1439K39k
R1539K39k
R161M1M
R176K86.8k
R181M1M
R191M1M
R2010K10k
R2168K68k
R22100K100k
Capacitors 17
C133n33n
C21u1uelec
C3100n100n
C410n10n
C51u1uelec
C6100n100n
C74n74.7n
C8220n220n
C933n33n
C10220n220n
C11470p470p
C1210n10n
C131u1uelec
C14470p470p
C15220n220n
C16100u100uelec
C17100u100uelec
Diodes 1
D11N58171N5817
Transistors 1
Q178L0578L05
ICs 1
IC1TLC27M4AiN**TLC27M4AIN
Potentiometers 3
BLEND10KAA10kPotentiometer
FBACK100KCC100kPotentiometer
GAIN1MCC1MPotentiometer
Switches 1
SW1DPDTDPDT

Other boards based on the Reverberation Machine