Tuesday, 30 October 2018

The Big Room (Reverb)

This module merges the Polyfusion reverb driver circuit with the NLC Segue for VC panning between wet and dry signals. It also has a VC feedback circuit....be careful with that one 😁

The driver circuit was used in the NLC CellF Voice panel, I always liked it and received good feedback from people who owned these panels, so stuck with the design. The downside is it rquires a particular reverb tank, which is easily available for USD19, so not really a big deal. Builders could try experimenting with the driver circuit to make it work with other tanks but imho it sounds thick and cavernous with the tank it is designed for.

The PCBs form a giant vactrol case for the LDRs used in the panning circuit. 

Build Guide and other info on the NLC wiki

PCB set = USD24 
Panel = USD22 
assembled = USD200 (Reverb tank not included, it will be much cheaper to order your own directly from the supplier) If in EU, maybe cheapest from here.


  1. very cool! The tank is cheap, but shipping to Belgium is at least 30$, does anybody knows if these tanks can be sourced in Europe or somewhere with less shipping costs?

    1. Basically the same as it costs me to ship one to Australia and then add on the same amount for me to ship one elesewhere, they are big but fit inside 84HP. No idea of any EU source

    2. European reverb tank supplier - https://www.tube-town.net/ttstore/Parts-for-Amps/Reverb-Tanks/Reverb-Tanks/MOD-Reverb-Tank-4FB3A1B::6858.html?language=en&fbclid=IwAR3V-fNhH41uAoT0M9H_6aY-TikXiPnVqKzwX_X2QiQ4naq1AodyXfMwu_A

  2. Cool thanks a lot !! I have been looking but couldn't find any.