[sdiy] Analog Delay Lines (was) [common acronyms?]

[media at mail1.nai.net]

There are mechanical delays besides tape.

What was the name of that thing that used  a speaker, a microphone, and a
long length of garden hose coiled in a box??  Believe it or not, it was a
commercial product.  I can't remember the name.

Then there is the electrostatic oil-filled rotating drum used in the Tel
Ray and the Morley Rotating Wah.  I own a Morley Rotating Wah, and it
really does have a rotating metal drum.  No seriously, it looks like a food
can.  It doesn't have much else besides a volume pedal, a motor control,
and a power supply.  I'm not exactly sure how it works, but if the metal
can isn't the source of the delay, that only leaves witchcraft :)