Sprung

Sprung is the result of several failed attempts to track down a decent schematic to drive a Mod™ 8EB2C1B spring reverb tank. After-market spring reverb tanks have a variety of input and output impedances and insulated/non-insulated jacks. The variety of schematics is equal to the variety of tanks, but not many specific to this particular model. This design incorporates overdrive and feedback circuits, to provide a very basic module to drive this specific tank.

Schematic

Schematics are provided as-is. Never trust that any schematic on the internet is foolproof. Test your build in isolation before introducing it to the rest of your modules.

Downloand Sprung PDFDownload

BOM

  • Capacitors
    • 470pf (1) C1
    • 22uf (electrolytic) (1) C2
    • .47uf (electrolytic) (1) C3
    • 10nf (2) C4, C5
  • Resistors
    • 67R (1) R7
    • 470R (1) R13
    • 4.7k (1) R8
    • 10k (2) R4, R10
    • 20k (1) R2
    • 120k (1) R6
    • 200k (2) R3, R11
    • 470k (2) R1, R9
    • 900k (1) R5
    • 1M (1) R12
  • Potentiometers
    • 100k (3) RV1, RV2, RV3
  • ICs
    • TL074 (1) U1
    • TL072 (1) U2
  • Audio Jacks (2) J1, J2
  • RCA Jacks (2) J3, J4

Adverb

Adverb is a stereo reverb with individual control over depth and mix for each stereo channel. Built on the Accutronics/Beltron BTDR-3 (H/V) unit, this schematic should be applicable to H (horizontal) or V (vertical) configurations. Mono or stereo input (mono input normalizes to both channels).

Schematic

Schematics are provided as-is. Never trust that any schematic on the internet is foolproof. Test your build in isolation before introducing it to the rest of your modules.

Download Adverb PDFDownload

BOM

  • Capacitors
    • 6.8nf (1) C1
  • Resistors
    • 1k (2) R7, R9
    • 2.2k (3) R3, R4, R6
    • 22k (2) R1, R2
    • 100k (2) R5, R6
  • Potentiometers
    • 10k (2) RV1, RV2
    • 100k (2) RV3, RV4
  • ICs
    • TL074 (1) U1
    • Digi-Log BTDR-3 (N/V) (1) U2
    • TL072 (1) U3
  • Audio Jacks (4) J1, J2, J3, J4

Lil’ Verb

Lil’ Verb is a mono reverb module with dual outputs. Built on an Accutronics/Beltron BTDR-1 unit, this schematic should be applicable to both H (horizontal) and V (vertical) configurations, and S (short), M (medium) or L (long) decay times. Mono input with mix control over two identical outputs, and feedback control over both outputs.

Schematic

Schematics are provided as-is. Never trust that any schematic on the internet is foolproof. Test your build in isolation before introducing it to the rest of your modules.

Download Lil’ Verb PDFDownload

BOM

  • Capacitors
    • 10nf (1) C1
  • Resistors
    • 1k (2) R6, R7
    • 2.2k (2) R2, R3
    • 22k (1) R1
    • 100k (2) R4, R5
  • Potentiometers
    • 10k (1) RV1
    • 100k (2) RV2, RV3
  • ICs
    • TL074 (1) U1
    • Digi-Log BTDR-1(H/V) (1) U2
  • Audio Jacks (3) J1, J2, J3