Doepfer A-147-4 Dual VC LFO

• Trianglecore
• Waveforms: Square with PWM, triangle, sine, sawtooth, ramp
• frequency range 0.02 Hz - 2500 Hz / 0.0017 Hz - 220 Hz
• CV input with attenuator and switchable polarity for frequency
• CV input with attenuator for pulse width
• Reset input

Trianglecore-based LFO at a glance:

Doepfer's A-147-4 Dual VC LFO is a dual triangle core-based LFO with 2x five waveforms. The module contains two similarly constructed LFOs that generate the waveforms square wave with PWM, triangle, sine, sawtooth and ramp. The frequency range of each LFO can be preselected via the rear panel Jumper: 0.02 Hz (approx. 50 seconds) - 2500 Hz respectively 0.0017 Hz (approx. 600 seconds) - 220 Hz. The LFO frequencies can be modulated via a dedicated control voltage input. For this purpose, there is an attenuator and the polarity is switchable. The square wave outputs are a special feature, as they have an adjustable pulse width and can be modulated via CV. Reset inputs for each LFO to complete the possibilities of this double LFO.

Tip: if you connect the triangle outputs with the CV inputs of the opposite side, the Dual LFO will cross modulate as soon as you turn up the attenuator!