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Early delays at a large concert (only 600,000 people)

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duane massey:
early 70's, we had an Echoplex, and then a Roland Space Echo.

MikeHarris:
First delay we sold was 1745A...followed by the M with the first pitch shifter. Lexicon had the very pricey DeltaT 101..followed by the 91 1x1...then the 92 1x2

Brian Jojade:
Back when I was a kid, I built delays with 3 reel to reel machines.  I created a loop that ran around 2 of the machines and then had a third machine in the middle.  By adjusting the placement of that machine, I could increase or reduce the delay without having to mess with the length of tape loop.  For the most part, it worked quite well, albeit cumbersome as heck.  I couldn't imagine taking something like that on tour, ever!

Ivan Beaver:

--- Quote from: Brian Jojade on November 12, 2020, 06:41:57 PM ---Back when I was a kid, I built delays with 3 reel to reel machines.  I created a loop that ran around 2 of the machines and then had a third machine in the middle.  By adjusting the placement of that machine, I could increase or reduce the delay without having to mess with the length of tape loop.  For the most part, it worked quite well, albeit cumbersome as heck.  I couldn't imagine taking something like that on tour, ever!

--- End quote ---
They had delay towers at Woodstock (the original), but didn't use them, according to Bill Hanely.  The promoter could not afford the rental of the tap machines he was going to use as delay units.

Daniel Levi:
Of course a lot of early electronic music relied on tape loops and I know people like Jean Michel Jarre used homemade tape echo.
He (JMJ) on his early works did not have a multitrack recorder so used 4 stereo reel to reel's, sync being starting them all at the same time and recording for as long as they would stay in sync. I believe Oxygene was done in this way albeit with a custom modification from Michel Geiss (who also created the Matrisequencer and Rhythmicomputer) that allowed JMJ to start all the machines with one button.
I believe he reckoned he could get up to ~7mins before they would lose sync. 

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