Reverb~2008· Accutronics-Belton (KR)
Belton Brick Spring-Voiced Reverb
Three-PT2399-in-a-block digital reverb — the cleanest 'analog-feeling' DIY verb.
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Schematic pending verification
We don't ship reference schematics until they've been hand-authored against authoritative sources (manufacturer service docs, ElectroSmash analyses, GEOFEX writeups) and reviewed in the simulator. Until then, the BOM, signal chain, controls and mod notes below are accurate, and you can still add this pedal to a project — it just won't include a circuit yet.
About
The Belton 'Brick' (BTDR-2/3) is a sealed module containing three PT2399 delay lines configured to approximate a spring-reverb response. Drop it into a simple op-amp wet/dry mixer and you get a lush, plate-like reverb with no software required.
Signal chain preview
4 stagesInput
Input buffer / send level
Belton BTDR-2H or BTDR-3 module (wet output only)
Op-amp mixer: dry + Mix-controlled wet
Output buffer
Output
Quick facts
- Three flavours: short, medium, long decay — choose at module purchase.
- Module needs ~15V internally; many designs charge-pump 9V to 18V before feeding it.
- Foundation of the EHX Holy Grail, EQD Ghost Echo style projects, and countless DIY reverbs.
Controls
- Mix / Reverb level (10k or 50k linear)