AJH Synth - Gemini 2412 Dual SVF

€369.45 *
Net price: €318.49

Prices incl. VAT plus shipping costs

Color:

  • 180103
The Gemini’s multimode filters are identical in design. The circuits feature an edge... more
Product information "AJH Synth - Gemini 2412 Dual SVF"

The Gemini 2412 is a smooth and fat sounding dual filter based on the circuits of Oberheim’s SEM. In addition to high-pass, band-pass and low-pass, the module features a variable mode, which allows you to crossfade between several filter types. The resonance is, at least subjectively, a little more aggressive than known from the SEM. Thus, the Gemini 2412 can sound more vigorous. Thanks to routing and jointly used modulation options, it is possible to flexibly combine both filter channels.

The Gemini’s multimode filters are identical in design. The circuits feature an edge steepness of -12 dB per octave. Each channel offers an audio input with level potentiometer. A rotary switch is used for selecting high-pass, band-pass or low-pass. Alternatively, a variable filter type can be chosen. Here, it is possible to smoothly blend from high-pass and band-pass to low-pass using a potentiometer. Other knobs provide manual control of cutoff and resonance. Both parameters can be modulated via CV inputs as well. The cutoff channel is equipped with a bipolar attenuator. A 1v / octave connector allows key tracking. In addition to the main output, there are individual outs for high-pass, band-pass and low-pass.

A master section allows you to combine both filter circuits. Results are emitted via a separate audio output. In detail, the filters can be wired in parallel or in serial. Using a CV input, you may modulate both filters evenly. In parallel mode, it is possible to crossfade between both filters. This can be done either via a potentiometer or a control voltage. On top of that, the phase of the second filter may be inverted.

The sound of the Gemini 2412 is smooth and voluminous. Frequencies are rather swallowed than cut. True to the SEM, the circuits can’t self-oscillate. However, the module’s resonance appears to be a little more aggressive, making the Gemini 2412 more flexible. Thanks to the routing options, it is possible to perform some rather unusual operations. In serial mode, for instance, you can create vocal-like sounds using both filters in band-pass mode. An example for parallel processing: Create a bass sound with the first filter plus an external envelope and add a rhythmic S&H modulation. Then, start blending in the second filter at regular intervals via another control voltage to add some more harmonic content. – Awesome! Used separately, but with the same settings, the filters are able to process stereo material evenly. Counter-phase modulations lead to panorama effects.

External videos:

HE: 3
TE: 28
Power consumption +12V: 50
Power consumption -12V: 45
Related links to "AJH Synth - Gemini 2412 Dual SVF"
"AJH Synth - Gemini 2412 Dual SVF"
Das Gemini-Filter bei AJH
Here is the information available on the brand...... more
AJH Synth

Allan "J" Hall started tinkering with electronics already at the age of 12 and after servicing classic analog synths for a while, he founded his own brand in Bournemouth, located in the south coast of England. His first run of Minimoog-clone modules were largely well received and Allan continues now expanding his catalogue with well thought-out original designs.

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