Compact dual LFO

The Modbox is a tempo syncable modulation source with a three-phase LFO, CV Skewable LFO, Sample and Hold, and White Noise generator.

LFO 1 is a three-phase LFO with independent outputs for each phase which are set at 0, 120, and 240 degrees. Shape can be switched between Sine, Triangle, and Saw with a push of a button.

LFO 2 is a Skewable LFO with three shapes. The LFO shape can be smoothly changed from a Ramp through Triangle to Saw wave shapes. The skew shape can be changed with the Skew knob or with CV

The Sample and Hold circuit's clock is normalled to the 2nd LFO but can be clocked externally as well. The sample and hold samples voltage from and internal white noise source and can also be replaced by an external voltage source. White noise has it's own output as well for use with other modules and applications.

Both LFOs can be sync'd to an external clock source by holding the wave shape button for different lengths of time. As they are independent of eachother, one can be sync'd while the other runs free like a gazelle on an African plain.

Tempo sync calculates the time between incoming clocks and reacts instantly to each new clock pulse. Each rate knob becomes a multiplier/divider when sync is engaged.

-Two independent, clock syncable LFOs that track 8-10 octaves and can be used as audio rate VCOs
-Sample and hold circuit
-White noise generator
-Three phase LFO with 3 shapes and independent outputs for 0, 120, and 240 degrees out of phase.
-Skewable LFO with three wave shapes controllable with knob or CV
-Fast and easy syncing with external clocks
-Button state recall between power cycles
Only 6 hp.

3ɸ RATE: Controls the speed of the Three-Phase LFO. Acts as a clock Multiplier/Divider when clock sync'd with multiplications on the and divisions to the left. Divide/Multiply by up to 16.

SKEW RATE: Controls the speed of the Skewable LFO. Acts as a clock Multiplier/Divider when clock sync'd with multiplications on the and divisions to the left. Divide/Multiply by up to 16.

SKEW SHAPE: Allows the change of wave shapes for the Skewable LFO with a knob. Becomes an offset with CV.

WAVE SHAPE BUTTON: Tapping this button changes the shape of the 3ɸ LFO. Holding this button for different lengths will sync the LFOs to an external clock via the Sync input.

Holding the wave shape button longer will produce different results:

1 second: 3ɸ LFO will be sync'd and skewable LFO will run free.

2 second: 3ɸ LFO will run free while Skewable LFO will be sync'd.

3 Seconds: Both LFOs will be sync'd to the External clock.

To de-sync LFOs, just hold again for .5 seconds and release.

  • 75 mA +12V
  • 27 mA -12V
  • ? mA 5V
  • 40 mm deep
  • Ø 4.80 (5 Votes) Average Rating

This Module is currently available.

$199 submitted Feb 6th, 02:47 by hawkfuzz | last Change Oct 9th, 17:46 by

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