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 WMD CLUTCH -- Firmware v1.10 Release Notes                (build 160)
 July 2026
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Please copy CLUTCH.bin and HIHAT.INI onto your Memory Card and install 
  into CLUTCH. The first time you power it on, it will update the
  firmware and reset the EEPROM user settings to factory. 

If you made changes to HIHAT.INI, please copy those changes to the
  new HIHAT.INI file. You may also continue to use your old file, it
  will work, but CLUTCH will default to the new Reverb and Chorus 
  algorithms. 


NEW FEATURES
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* NEW PLATE REVERB -- a smooth, dense plate algorithm replaces the old
  reverb as the default. The PARAM knob (and FX CV) now sweeps the plate
  from small and tight (CCW) to huge, near-freeze washes (CW). Size
  changes crossfade cleanly -- no clicks or pitch warble while turning.
  - Prefer the old sound? Set FX_REVERB_TYPE = 0 in HIHAT.INI.
  - New HIHAT.INI voicing parameters: FX_REVERB_SIZE_MIN / SIZE_MAX
    (knob sweep range), FX_REVERB_PREDELAY, FX_REVERB_MOD_DEPTH,
    FX_REVERB_MOD_RATE, FX_REVERB_DIFFUSION, and FX_REVERB_MIX.
    FX_REVERB_LPF / HPF shape the tail as before.

* NEW THICK CHORUS -- a fatter multi-voice chorus is now the default.
  Up to 6 voices, each with its own delay position and modulation phase,
  for a much richer ensemble sound.
  - Prefer the old sound? Set FX_CHORUS_TYPE = 0 in HIHAT.INI.
  - FX_CHORUS_TAPS sets the voice count (up to 6), and the new
    FX_CHORUS_STAGGER parameter controls how far apart the voices sit.
    FX_CHORUS_LFO_B / LFO_T now set the PARAM knob's rate range.

* RELEASE CV FOR CLOSED HATS ONLY -- RELEASE_MODE = 2 in HIHAT.INI sets
  a fixed OPEN release time (via RELEASE OFFSET) while the RELEASE
  control/CV shapes only the CLOSED hits.

* HIHAT.INI now documents the valid range for every parameter.

* Time based effects were modulated by Feel/Velocity. Time based effects
  are now treated as sends and tails are consistent. 

* Moved Time based effects to post LPF/HPF. 

* Startup LED check -- all RGB LEDs are verified at power-on in factory
  test mode, and the module reboots automatically after saving settings.
  Not a customer facing issue. 

BUG FIXES
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* DUB ECHO: fixed crossfade noise while turning the PARAM knob.
  Delay-time changes now glide as clean, click-free crossfades.

* SD CARD: improved compatibility and read stability with a wider range
  of cards.

* The sample bank selected at power-on now always loads completely.

* The bank LED flashes red while a sample in an unsupported format
  plays, so problem files are easy to spot. Samples still play. 

* Better parsing of .WAV headers, will handle samples with extra data here

* Fully caches samples regardless of the PCM data start point, reducing
  glitches at the beginning of some samples

* ORANGE and BLUE factory sample banks had a few improperly formatted
  samples, these are now all fixed. 

* Stopped Spring Toggle from changing FX when FX mode was not active
  and feel was also off.



NOTES ON HIHAT.INI
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Existing HIHAT.INI files keep working: any parameter missing from your
file simply uses its factory default, so you get the new Plate reverb
and Thick chorus automatically. To tweak the new effects -- or to switch
back to the vintage versions -- copy the updated HIHAT.INI from this
release onto your card and edit the FX_REVERB_* / FX_CHORUS_* entries.

Questions or issues: support@wmdevices.com
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