Muff's Modules & More

intellijel · Last edited by intellijel on Sat Jun 30, 2012 12:36 pm; edited 2 times in total

Intellijel Rubicon - Thru Zero FM Triangle Core VCO

Not long after David Dixon finished the Dixie design he began working on a
totally novel approach to implementing TZFM (thru zero frequency
modulation). After almost a year of experimenting and many pcb revisions
later we are pleased to present what is surely David's masterpiece as far as
analog VCO design is concerned.

The Rubicon is packed with the following features:
- Triangle core
- Switchable linear and (for the first time in any module) exponential TZFM
- Linear INDEX VCA for dynamic control of TZFM depth
- SYMMETRY control (full CW is normal, full CCW gives reversed waveforms,
centered the VCO is at 0 Hz) with VC input
- 12 primary waveform types:
sine, sigmoid, double sigmoid, triangle, saw, double saw, zigzag,
square, pulse (center modulated), pulse (edge modulated), double pulse
- Suboctave circuit (similar to the one found on the Roland SH-101) with -1
and -2 octaves.
(Suboctave output is affected by FM just like the main signals.)
- SOFT SYNC (aka reversing sync) with attenuator
- HARD SYNC with selectable reset direction (determines if the triangle
starts moving up or down after a reset, very useful in LFO mode)
- PWM and EXP FM with dedicated attenuators.
- Wide frequency range:
Hi range (VCO): 1 Hz to 24 kHz
Lo range (LFO): 0.01 Hz (100 seconds) to 240 Hz
- precise tracking within 0.1% over 8 octaves
- 18hp and skiff friendly
- MSRP $399
-Shipping in 3-4 weeks

NOTE: all our new designs (with the new knobs) have pots that are bolted to the panels.

A few audio demos here:
http://soundcloud.com/intellijel/sets/intellijel-rubicon-vco-demos