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Feeding the other channels back into the module will change the symmetry of the 

waves creating resonance type sounds, or generally unusual wave shapes. 
 

 
OTHER PATCH IDEAS 
 

 

Applying a filter to the VCO before the input and sweeping the filter with a high 

resonance will create different sounds on each channel, emphasizing the resonance in 
different ways. 
 

 

Although the front panel has two main inputs and one CV input, more signals can be 

mixed together before the inputs to create additional tones. For example, using an 
external mixer to combine three VCOs before the input creates more complex and 
unpredictable tones. 
 

 

Also, control voltages may be applied to either the IN I or IN II jacks but because they 

aren

ʼ

t scaled for CV control the output signal may disappear completely when the CV 

signal is high. Similarly, audio rate inputs will work on the CV input but at a lower level. 
 
 

 

While it wasn

ʼ

t specifically designed for this purpose in mind, triangle wave LFOs can 

be multiplied using the odd harmonics, III, V, and VII. At the right amplitude the LFO 
will be 3x the frequency, 5x the frequency and 7x the frequency. Keep in mind that the 
individual outputs are at lower levels than the main output, so some amplification may 
be needed. The even channels II, IV, and VI are AC coupled and therefore will not work 
the same on LFOs. On these inputs, slow LFOs will not do anything. 
 

Summary of Contents for HARMONIC MULTIPLIER

Page 1: ...changing the amplitude of certain frequencies and the phase of others When used with the distortion circuit actual pulse width modulation is achieved When used in combination with feedback modulation between different distorted subharmonics can be achieved OUTPUT JACKS OUT Main output 5V max II VII Audio output for the individual harmonics levels vary 2 3V peak to peak max INPUT KNOBS IN I Control...

Page 2: ...each wave is slightly different Other waveforms and sounds besides triangles can be used with different sounds resulting Input a triangle wave VCO to the channel one input IN I Turn the IN I pot clockwise to correspond to the input amplitude For most eurorack oscillators at 10V peak to peak 5V turn the IN I knob to 2 oʼclock For pro audio line level signals 2V turn the IN I knob to 4 oʼclock For r...

Page 3: ...yboard can create a range of sounds DISTORTION There is built in distortion clipping circuit built in to the module that allows for additional tones Turning up the channel one knob I while the other channels are turned down II VII will create a basic distortion squaring effect on the inputs Pulse width generation can be achieved by applying a triangle sine or sawtooth VCO to the input and applying...

Page 4: ...complex and unpredictable tones Also control voltages may be applied to either the IN I or IN II jacks but because they arenʼt scaled for CV control the output signal may disappear completely when the CV signal is high Similarly audio rate inputs will work on the CV input but at a lower level While it wasnʼt specifically designed for this purpose in mind triangle wave LFOs can be multiplied using ...

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