Module A-114 contains two separate ring modulators.

A ring modulator outputs the product (Multiplication X • Y) of the signals at inputs X and Y. It's similar to a VCA, but whereas a VCA only responds to positive voltages at the inputs (2-quadrant multiplication), the ring modulator responds to both positive and negative voltages (4-quadrant multiplication). The ring modulator thus provides a refinement of amplitude modulation (AM). Ordinary amplitude modulation will output the original carrier frequency fC as well as the two side bands (fC - fM, fC + fM) for each of the spectral components of the carrier and modulation signals - but ring modulation cancels out the carrier frequencies, and just lets the side-bands pass to the output.

A ring modulator is used for the production of bell-like sounds, alien voices, or just to produce new timbres

Merk:

Doepfer

Type:

Ringmod, Frequency shifter

Nummer:

A-114

Diepte:

40mm

Breedte:

4HP

Power:

40mA @ +12V, 30mA @ -12V

The small module combines three functions already available in Doepfer's dual modules: ring modulation, sample & hold and slew limiting.

It is recommended for compact systems where space is an issue or for users who don't need two ring modulators or two slew limiter for instance but a small and multi-functional utility instead.

The upper section consists of a half of a A-114 ring modulator and has inputs for the signals X and Y. The X*Y output emits the multiplied / ring modulated signal. The bottom section is a sample & hold followed by a slew limiter. It has an input for the sample signal and a trigger input. A switch select mode of operation as the module can work as a sample & hold or as a track & hold. When in T&H mode no trigger is applied this section can be used as an individual slew limiter.

Merk:

Doepfer

Type:

Slew Limiter, Sample and Hold, Random, Ringmod, Frequency Shifter

Nummer:

A-184-1

Diepte:

40mm

Breedte:

4HP

Power:

40mA @ +12V, 30mA @ -12V