For a closest emulation of a multi-head tape machine, I’d go with the QuadraVox, or Resonator algorithm. Either one will give you 4 delays, with variable ‘head spacing’, and the ability to turn each ‘head’ on or off.
Resonator also provides 4 filters, & feedback capabilities. QuadraVox is almost too clean, & any pattern repeats have to come from a 2nd delay line in series. But it’s also the best algorithm to illustrate the concept:
- PITCH A, B, C, D should always be at UNISON, or OFF; depending on the ‘Tape Head Matrix’ program.
- DELAY GRP should be at .A.B.C.D, to simulate four equally-spaced tape heads.
- Tap the DELAY D time for the maximum delay length.
- KEY and MODE don’t matter. PITCH MIX centered; MIX to taste.
Then set each ‘head’ to UNISON or OFF, with the ‘Tape Head Mode Select’ chart translating like this:
- HEAD 1 = PITCH A
- HEAD 2 = PITCH B
- HEAD 3 = PITCH C
- HEAD 4 = PITCH D
Resonator adds features; enhancing the realism. It’s the same concept, presented in a slightly different way:
- NOTE 1, 2, 3, 4 will be at OFF, or ‘ON‘ with a variable tuned filter position.
- RHYTHM should be at 188.8.131.52 to simulate 4 equally-spaced playback heads.
- Tap the LENGTH for the maximum delay time for all four ‘heads’.
- RESONANCE isn’t absolutely required, but the high and low pass filters are still active.
- FB1 is a more straightforward pattern regeneration. FB2 will shift & degrade the pattern.
- MIX to taste. A tiny touch of REVERB adds some ‘glue’.
The easiest place to fine-tune the ‘heads’ and filter positions is in the NOTE GRID view:
- HEAD 1 = NOTE 1
- HEAD 2 = NOTE 2
- HEAD 3 = NOTE 3
- HEAD 4 = NOTE 4