U2 CAN DO IT(EDGE'S DELAY SECRET REVEALED)

I've always been fascinated with U2's distinct delay sound. It is so distinct that it takes a tremendous amount of research on ow his delay sounds and how he uses them. The delay varies from each songs but the guitar tone remains the same. It has become The Edge delay trademark.
The most common answer to a common question regarding the delay use on the song "Where the streets have no name" is “set it to 3/16 tempo, about 340-350ms”. Below is the set-up use by The Edge. He splits his guitar signal after his effects chain and hooked them into 2 separate amplifiers. Edge relay mainly on KORG SDD-3000units and TC-2290s. the SDD-3000 is a digital delay (it allows you to exactly dial in the delay length which is crucial), the modulation section of it adds a nice warmth. He splits usually his signal at the end of his other effects chains and runs it into 2 SDD-3000s. Those feed directly into his amps (usually Vox AC30s). One reason he does this is to make use of the +10dB output on the SDD-3000s. Edge has 2 amplifiers mic’ed up by 2 microphones that are 5 feet apart. The guitar sound comes out of amplifier A while the guitar sound hits the microphone that is in front of Amp A. It takes 5ms for the sound to travel and hits the microphone in front of Amp B. If the mic for Amp A is panned left and the mic for Amp B is panned right, then that one single note will hit the left channel and then 5ms later will ‘echo’. He sometimes  puts a mic  5 feet behind one of his amps and keeping the two amps ten feet apart would give the main attack and the 5ms and 10ms delays after it, which matches close to what most of the tracks look like.  If the initial signal comes out of Amp A and B at the same time, then both of their mics will record the initial signal and both will record about a 5ms ‘echo’ when they pick up the sound coming from the others’ amplifier after it travels over to them.