ADDAC Systems has introduced the ADDA701 Voltage Controlled Oscillator for Eurorack modular synthesizers.

The ADDAC701 is a fully analog Voltage Controlled Oscillator. It works at both the audio and sub-audio ranges (0.01 to 40.000 Hz), with four simultaneous waveform outputs (rectangular, sawtooth, triangle and sine).

Features:

• Four simultaneous outputs of Rectangular, Sawtooth, Triangular and Sine waves.
• Audio frequency range: 1 – 40.000 Hz.
• Low Frequency range: 0.01 – 400 Hz.
• Pulse width control for rectangular wave with two mixable inputs.
• Microtuning with dedicated CV input.
• Linear Frequency control input.
• Week and Strong Sync trigger.
• Auxiliary Out with normal and inverted outputs, with choice of waveform and output level.

The ADDAC701 VCO is priced at 400 Euros.

http://vimeo.com/37917317

In the video, above, you can see 3 ADDAC701 VCO’s in action.

• It starts with all three in rectangular waveforms with fast pwm modulation through the ADDAC502 Lissajous Curves. ADDAC501 Complex Random in Quantized mode is used to generate the notes heard at a fixed speed.
• The video goes through with all 3 VCO’s in Saw waveform, then in Triangle and last with Sine Waveform.

A detailed description of the patch:

Audio Path:

• All three ADDAC701 VCO’s are connected to ADDAC801 Simple Mixer from their AUX OUT+
• Second and third VCO’s are also connected to the bottom oscilloscope of ADDAC205 Dual Oscilloscope from their AUX OUT- output.
• The ADDAC801 Output is both connected to the sound system and to the top oscilloscope of ADDAC205 Dual Oscilloscope

Control Path:

• Each of the 3 ADDAC501 Complex Random outputs is conneced to each VCO, controlling their frequency, ADDAC501 is in Quantized Mode.
• 3 outputs of the ADDAC502 Lissajous Curves are connected to the PWM of each VCO.