The RK6 is a Sallen-Key low-pass filter with an edge steepness of -12 dB per octave. It features a 17JK8 dual triode. The tube is operated more conservatively than usual to ensure maximum lifetime. Incoming audio material can be leveled before reaching the actual filter. Cutoff and resonance are adjustable via potentiometers. In addition, it is possible to influence both parameters via control voltages. The cutoff CV input accepts signals in the range of 0 V to +3 V. It roughly follows the Hz/v standard. The resonance behavior varies depending on the cutoff setting.
Cutoff and resonance CV inputs
3U Eurorack module, 8 HP wide
Power consumption: 100 mA at +12 V and 2 mA at -12 V. - Attention! While heating up, the module draws about 200 mA at +12 V