Published on Nov 11, 2017 Thonk Synth DIY
"Buy the Spring Reverb MK II kit here - https://www.thonk.co.uk/product-categ..."
"New Features of the Spring Reverb Mkii include:
Internal Feedback control with CV input, dedicated attenuverter and with invert switch for maximum feedbackiness
Wet out and feedback in sockets for more flexible patching
3HP Expander – allows for instant switching between reverb brick and spring tank – or set a blend between the two
Expander also allows for front panel send and return to spring tank.New improved circuit
More Features
Works with a variety of spring reverb tanks (not included), or with the Accutronics BTDR-2 reverb ‘brick’ designed by Brian Neunaber (not included)
Vactrol (VTL5C3) crossfade between dry and wet (vactrol circuits are variable in their ability to go completely 100% wet, like the Make Noise Echophon for example)
Tilt EQ on the reverb send to tune the voice of the reverb
X-Fade input so the module can also be used as a standalone vactrol crossfader (crossfade demo)
Feedback circuit with positive and negative phase
Attenuverter on the crossfade CV input
6hp wide (NB: If using the brick, mounted horizontally, the brick extends 5mm over the PCB to the left of the module, around 25mm back from the front panel, so mount the reverb next to a shallow module)
Expander with Front panel mount Phono sockets & Crossfade between reverb types."
And the Expander:
"The Music Thing Spring Reverb Expander is designed to connect to the Music Thing Modular Spring Reverb Mkii. The expander adds the ability to blend the reverb tank and brick outputs and manually crossfade between the two. This module also adds the option to connect to your reverb tank from the front panel rather than the back PCB of the main Spring Reverb module. This expander is passive so doesn’t require a power cable.
Note: This expander is only compatible with the MTM Spring Reverb Mkii – It will not work with older revisions."
