Delay Time allows you to select the length of delay between the original and the delayed signal. Used with Feedback, it also affects how long apart the echoes are.
The Short/Long switch sets the range of the Delay Time control. Set to Short, the Delay Time ranges from 0.04 to 0.4 seconds. Set to Long, it ranges from 0.08 to 0.8 seconds.
Feedback determines how much signal is fed back to the delay input, affecting how fast the echoes die out.
The Highpass knob removes low frequencies from the feedback loop. It removes undesirable low frequency “mud” common when mixing with delays and also allows the creation of amazing echo swarms that won’t clip the output. Dial in a highpass frequency from 50 Hz to 500 Hz. Frequencies below the setting are filtered from the feedback loop.
The Bypass LED glows either red (bypassed) or green (not bypassed) to show whether or not the effect is in the signal path.
Because analog delay chips offer only a fixed number of cells, the extended delay times store a lower-fidelity version of the input signal. Try the Long delay setting when going for cool “lo-fi” sounds and textures.
By carefully adjusting the Feedback, Drive, and Highpass controls, you can use the Moogerfooger Analog Delay as a sound generator. Simply pulse the delay unit with a short piece of audio (even a second will do), and adjust the Delay Time knob. Set correctly, the unit will generate cool timbres for hours all by itself.