AM1631

Dual Ring Modulator

This is recreation of the Moog Dual Ring Modulator that Keith Emerson commissioned from Bob Moog in the 1970's. There are no origianl schematics so the circuit is an approximation using ideas from the Moog Bode Frequency Shifter and the Roland 700 Modular.

The AM1631 uses a pair of UA796 modulation IC's, and LM301A Op Amps, both in "can" format, and just like the original. The module delivers a superb sound with ringing bell tones across a wide frequency sprectrum.

Each ring modulator has a level control for the B input and a red flat top LED showing the signal output level.

The module is designed to complement the Behringer System 55 Modular System, with a 8HP panel width. The panel has a black anodised finish with bold white lettering. Jack sockets are by Lumberg.

There are six 3.5 mm jack sockets on the front panel:

2x audio inputs for each Ring Modulator
1x audio output for each Ring Modulator

The module comes with a 10-pin power cable and a set of black M3 screws and washers.

https://www.amsynthstore.co.uk/AM1631_Dual_Ring_Modulator/p1461448_20893193.aspx