Infinite Machinery Demo by Todd Barton

video upload by Todd Barton

"Just got turned onto these cool modules from Infinite Machinery which is located here in my little town. Really digging them. Enjoy these brief test drives."

Todd Barton's Patreon: / synthtodd

The Infinite Machinery Hexa VCA is a 6 channel VCA with DC coupling and a unique normalization function. All in 12 HP

Signal inputs are DC coupled.
CV input response, 0 to +5V

Maximum amplification is unity gain, or 1.

Channels with no CV input will have CV normalized
to the CV of the channel above. This cascading of CV
values is defined in two groups, channels 1 - 3 and 4 - 6.

For example: If CV is patched to channel 1 and no CV
patched into channels 2 & 3 - Channels 2 & 3 will
follow the CV of channel 1.

Patch CV into channel 2 and nothing into channel 3
then channel 3 will follow the CV of channel 2.
The same hold true for channels 4 - 6, with 4 being
the start of the CV cascade.

Module depth - 34mm

Current draw - 40mA +-

The TZ VCO is an fully analog VCO based on the Sound Semicondutor 2130 integrated circuit.

Features
Supports true thru-zero FM
Exponential FM
Sine, Square, Triangle, Saw, Pulse waveform outputs
Hard/Soft sync input, toggle switch selectable
CV Inputs
1V/Oct CV input
PWM CV input, 0 - +5V input
12HP format
Coarse and fine tuning
+33mA, - 31mA current usage

The Low Road is a classic analog low pass filter with a 24dB per octave cutoff slope.

The Low Road uses the SSI2144, a reissue by Sound Semiconductor of the renowned SSM-2044 IC that formed the filter section for countless vintage synths. The filter's tone is warm and creamy at low resonance settings and moves into fat, over-driven squelches at the higher end of its range.
It will self-oscillate when resonance is cranked and outputs a pure sine tone.
In addition, the frequency CV input tracks volt per octave allowing it to double as a sine wave VCO.

Features
CV Inputs: Resonance, Frequency Cutoff, 1V/Octave

Resonance CV input: 0 to +5V
Frequency CV input: -5V to +5V
1V/ Oct - 5 octave tracking
Current consumption: +12V, 21mA, -12V 21mA

Module depth: 31mm

The EG-2 is a voltage controlled ADSR module. All parameters of the ADSR envelope are fully voltage controlled as well as with potentiometers. Voltage control input is summed with the potentiometer control.

Inputs

Gate - Voltage to this input starts the ADSR cycle and ends when voltage drops to 0. Typical voltage needed to start the ADSR cycle is 2.3V to 5V. Maximum voltage input is +11V.
Trigger - A voltage to this input of at least 1.1V will initiate an AD (attack, decay) envelope. Once initiated the envelope will complete and drop to an output of 0 volts. Subsequent voltage inputs will re-trigger and start the AD envelope again.
CV for attack, decay, sustain, release. Expected CV input is -5V to +5V. The input voltage is summed with the voltage coming from the parameter's potentiometer voltage.
Envelope Output

Minimum Attack Duration ~1.8ms
Maximum Attach Duration ~38 seconds
Maximum Release Duration ~70 seconds
Maximum Decay Duration ~58 seconds
Maximum Sustain Voltage 5V
Attack Peak 5 to 5.3 volts
Additionally the EG-2 has an output that sends a constant +5V gate signal while the attack phase of the envelop is active.

There is also a tactical switch for manually initiating the ADSR, actiing as a voltage to the Gate input.

Module depth: 32mm

Current usage: +26mA, -24mA

New simplified design with brand new aluminum front panel.

The 2131 VCO is a 1V/Octave VCO based on the Sound Semiconductor SSI2131 chip. The module offers unparalleled temperature stability, exponentiality, waveform integrity over a 10 octave range.

Manual Controls
Coarse Tuning - Approximately 5 octave range

Fine Tuning - Approximately 1% frequency adjustment

PWM - Controls the pulse width or duty cycle of the pulse waveform output.

Hard/Soft Sync - Switch changes between hard and soft synchronization of the sync frequency input.

Inputs
1V/Octave input.

PWM CV - Externally controls the pulse width or duty cycle of the pulse waveform output. This input is summed with the manual PWM control.

Sync frequency input. Toggle switch switches between hard and soft synch operation.

Linear FM - A ground-referenced current input. Current into the LIN FREQ pin sets the linear scale of the exponential converter’s output. It can be used for linear FM applications.

Internal Adjustments
Bias - Provides a base output frequency. Normally adjusted to output a frequency of 27.5Hz

Scale - Exponetial scale tracking adjustment

High frequency - High frequency tracking adjustment

Every 2131 Oscillator comes pre-calibrated to track 1V/Octave. Re-calibrating the SSI2131 is relatively simple procedure.

We provide a web application to assist in calibration - SSI2131Tuner Follow the instructions on the page to calibrate your 2131 VCO

See the SSI2131 datasheet for more information about the SSI2131 VCO chip and its characteristics.

You can find additional details at https://infinitemachinery.com/