Delay time can be set with the according control between 75ms and 200 ms, with control voltages even from 50ms to 2000 ms. Beyond a delay time of 300 ms the internal clock frequency becomes audible as a explicit whistling. You can eliminate this with a low pass filter but it will also cut down the high frequencies. The sound of an analog delay above 500ms should be considered a special effect regarding the reduced audio quality at long delay times.
The RS440 features two modulation inputs for controlling delay time through voltages (±10V); one is equipped with an attenautor. The resonance parameter sets the number of repeats and can be considered as the fedback parameter. The resonance goes up to self-oscillation which will work even without an input signal.
Voltage and manual control of the dry/wet mix ist available as well.
Usage with Eurorack:
Analogue Systems' modules are designed solely for use in cases and cabinets made by Analogue Systems. Through the use of adaptors or adaptor cables, however, it is possible to connect them to Eurorack cases.
Should you chose to use an Analogue Systems module in an Eurorack case, please note that the warranties are thus void and the use occurs at your own risk! If the module is plugged in incorrectly and therefore damaged the customer has to bear any costs for repair and shipping!
Because of the different position of the mounting holes there will be a gap of 0.5HP (= 2.5 mm) when mounting an Analogue Systems module next to a Eurorack module. Take this into consideration when planning your system. Gaps can be covered with 1.5HP wide blank panels by Doepfer.
CV inputs for delay time (one with and one without attenuator) and dry/wet mix
One audio input with level control and one audio output
3 U Analogue Systems module, 12 HP wide, 66 mm deep
The module most probably requires +5V