CHD Elektroservis 7-701, User Manual, Page: 4 / 8

Spectral Ring Modulator
Module 7-701 v. 1.0
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2. MODULE FUNCTIONS
Spectral Ring Modulator is module designed for Eurorack modular synthesizer systems. All controls,
signal inputs and outputs are located on the front panel (see Fig. 1). Inputs and outputs use standard
mono 3,5 mm (1/8”) mini-jack patch connectors.
Fig. 1 – Module front panel
[1] CARRIER – carrier signal input CARR-IN level control
[2] MODULATION – modulation signal input MOD-IN level control
[3] SPECTRUM – side frequency signal input level control
[4] MIX – ratio of direct signal from CARR-IN input and processed
signal from RING-OUT output at MIX-OUT output
[5] CARR-IN – audio or modulation signal input (Carrier)
[6] MOD-IN – audio or modulation signal input (Modulator)
[7] RING-OUT – ring modulator output
[8] MIX-OUT – mixed output
The Ring modulator module is usually used for metallic or bell-like sounds. Optimal result depends
on the module controls settings.
Spectral Ring Modulator is based on pure analogue signal multiplier. The scheme in Fig. 2 shows the
internal block structure of the module.
Fig. 2 – Block scheme