In [this article](https://valhalladsp.wordpress.com/tag/1580/), on the making of the Brian Eno sound, it read, "Kevin Killen, answering a question about the signal flow on the U2 song “4th of July” on Gearslutz, described the signal path as follows: 'The delay and modulation was derived from the AMS 1580. On its fader return, some hi frequencies were rolled off, then it was fed into a 224 Hall setting, probably 5 seconds but with a rolloff in the top and bottom. This return may have been equalised also. We may have added a second delay but then the delays have to be timed to the track as the net effect is blurring the chord progression… Our last tweak would be to play with the sends on all of the returns to the point that its almost recirculating out of control, which in turn is creating a layer upon layer effect.'"more
In [this article](https://valhalladsp.wordpress.com/tag/1580/), about how Brian Eno and Daniel Lanois got their shimmer sound, it says, "The AMS DMX 15-80s was a digital delay / sampler / pitch shifter that was in common use in Britain in the early 1980’s. Eno and Lanois have both sung the praises of this unit, and Wendy Carlos has said that the AMS unit had 'perhaps the least audible artifacts to pitch shifting available at that time.'"more
It was while working on the Human League's 'Fascination' that Martin Rushent invented one of the most popular studio tricks of the '80s: using the 'loop triggering' facility on the AMS DMX1580 digital delay as a primitive sampler. "I used it for the bass, snare and bass riff," he says. "I knew AMS reasonably well by the time they brought out this very high-quality digital delay line, so I asked if they could adapt it so that it wouldn't erase its sample. I'd been working with the Linn Drum and realised that it was just a memory of drum sounds, but I wanted to make my own sounds. So they put in four seconds of delay for me. All you had to do was feed in the signal and it would start sampling the moment it saw a rise in voltage. Then you could edit it a bit. After that you'd set it to Fire mode and trigger it via a click fed into the audio input, so I used the Micro Composer to send it a pulse. AMS asked me to show them what I wanted it for so I did a demo by feeding in a bass drum sound and triggering it via the Roland. After that, they made it standard on their products, sold it to the Japanese, and I made fuck-all out of it!"more
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