Corrected entry: In the opening scene where Marty plugs his guitar into the gigantic amplifier, there is no feedback - if he was standing that close, at that volume, with that amount of overdrive, there would be some ridiculously loud feedback almost instantaneously. The pickups on an electric guitar will feedback the output from a speaker just as easily as a microphone does.
tw_stuart
30th May 2005
Back to the Future (1985)
6th Aug 2005
Back to the Future (1985)
Corrected entry: At the very beginning of the film we see the machine Doc has invented to feed his dog. It takes a can of dog food and positions it under a can opener, and the lid is held by a magnet after it is cut off. The machine then tips the contents of the can into a bowl which holds three or four days worth of dog food, indicating that nobody has been around for a while. So, who has been removing the lids from the magnetic holder?
Correction: The previous lid gets knocked off when a new can is picked up.
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Correction: Given that Doc has just invented a time machine, the idea that he could invent an amp that doesn't suffer from feedback isn't so far fetched.
tw_stuart