The GMS-782A Dual Voltage Controlled Low Frequency Oscillator/VC Amplifier provides low frequency triangle, sine or square waves for use as modifiers or triggers for complex evolving synth patches. Two functions, commonly used together are combined in each channel to produce a versatile voltage controlled waveform generator. The LFO has a wide range from subsonic to low audio in three ranges and provides a trigger function to reset the oscillator to a known state. The voltage controlled amplifier has a selector switch allowing one of the three oscillator waveforms or an external input to be selected as its input. The output is a function of the front panel level control summed with the voltage control input.
TRIGGER- When a control signal with a rising edge is presented to the Trigger input, the oscillator is reset to 0 Volts output and the waveform starts rising in the positive direction. The trigger input signal should be a 0 to +5 Volt signal. The length of the trigger pulse is not important.
|Frequency Range - Normal Range||0.015Hz to 400Hz|
|Frequency Range - Low Range||0.0015Hz to 40Hz|
|Frequency Range - Ultra Low Range||0.00015Hz to 4Hz|
|Waveform Voltage Range||10 Volts Peak-to-Peak|
|Frequency Control Voltage Standard||Exponential 1 Volt per Octave|
|Amplitude Control Voltage Standard||Linear 1.0 V per Volt|
|Envelope Control Voltage Range||0 - 10 Volts|
|Gate Control Voltage Range||0 - 5 Volts (1.8 Volt Threshold)|
|Typical Input Impedance||100K Ohms|
|Typical Output Impedance||1K Ohms (short circuit protection)|
|Module Power||+15 Volts 40 mA., -15 Volts 40 mA.|
|Module Size||Panel height - 8.75 inches (222 mm);
Panel width - 2.125 inches (54 mm);
Depth (behind panel) 2.0 inches (50 mm)
We produce electronic synthesizer modules in the two most popular formats, MU (Moog compatible 5U) and EU (Eurorack compatible 3U). A wide range of voltage controlled modules including oscillators, amplifiers, mixers, envelope generators, special effects units, wave generators, filters, power systems and cases allow users complete freedom to configure any desired electronic music instrument.
Grove Audio builds microphones, preamplifiers, equalizers, compressors and other professional audio equipment for performance and studio use. We build units in popular formats such as 19 inch rack mount and 500 series 3U modules. We can also produce custom designs on request. Contact us for a consultation.
You can explore all of our products, download spec sheets, and purchase our products in the Grove Audio Synth Store. You can also learn about our periodic specials and new product introductions. Click the button below to go directly to the store.