Synthrotek is pleased to offer a complete line of eurorack synthesizer modules, power, cases and accessories in both complete units kits and panels & pcbs. We now offer a very complete analog modular monophonic voice with many accompanying utility modules. This new complete voice is the product of a collaboration with synth guru George Mattson, who now joins us in releasing our new MST (Mattson – Synthrotek) line of premium modules.

The MST Noise/ Sample & Hold / Track & Hold Module supplies you with all the noise and random goodness you need in one small 4HP package.  White, pink, and slow-random noise are just a patch away.  The white noise is normalled to the signal input or input your signal of choice and break the normalled connection.   To activate either the S&H or T&H, just supply the module with your clock source to start generating stepped random control voltages.

Features:

White, Pink & Slow Random Noise Output

S&H sample signal input

S&H clock input

S&H or T&H output

Sample & Hold / Track & Hold select switch

Specifications:

Current draw: +12v: 18mA, -12v: 17mA

Width: 4HP  Depth: 4.77 cm (1.88 in)

Noise Calibration:

Use an Oscilloscope with a spectrum analyzer:

Roughly Center all four trim pots.

Place the scope probe on the White Noise output prior to the 1K output resistor R3.

 

Set the spectrum analyzer frequency range to cover roughly 20Khz.

Trim the Noise Adjust RT1 until the noise spectrum is of roughly equal amplitude across the whole spectrum.

Trim the White Noise Gain Trim RT2 until the scope trace indicates peaks slikely past +/-5V output.

 

Now place the scope probe on the Pink noise output prior to the 1K output resistor R8.

Trim Pink gain RT4 until the scope trace indicates peaks slightly past +/-5V output.

Now place the scope probe on the Slow noise output prior to the 1k output resistor R8

Trim the Slow random Gain RT3 until the scope trace indicates peaks slightly past +/-5V output.