G-Storm Electro - T2K-VCF

The G-Storm Electro T2K-VCF filter is inspired by the legendary Joy Division synth Powertran Transcendent 2000.

The Transcendent 2000 was a development of Tim Orr(Akai and EMS) and became available as a DIY kit in the late seventies. Among others, it was used by legendary producer Martin Hannett (Joy Division, New Order) and reminds of the Korg MS-20 in terms of sound character. Correspondingly the resonant filter, based on a CA3080 OTA design and a CA 3140 to compensate for thin bass sound at high resonance values, is capable of sounding pretty "nasty".

The two-pole filter can be switched between low-pass and band-pass via a shape control and, according to the manufacturer, responds particularly well to signals that have previously enjoyed wavefolding, and lets 08/15 oscillators do the pogo dance. The separate inputs for both filter types can be adjusted to each other with a dedicated mix potentiometer, while the cutoff frequency can be modulated via a keyboard input with a V/Oct signal and another CV input with a larger range. An output rounds off the picture together with generously dimensioned controls for Frequency and Resonance.

Features:

• 2 pole low and bandpass filter
• Based on CA3080 OTA design
• Bass compensation at high resonance settings (CA 3140)
• Two audio ins with dedicated gain pots
• v/oct CV input