Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: P Batty on February 05, 2012, 10:21:43 am
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I know that everyone here is aware of the need for retro-fitting vintage amps with a proper chassis ground, but here is a brilliant essay which should be read by anyone ( i.e. a repair customer who doesn't want to pay for a new power cord) who isn't:
http://deadspin.com/5881337/feet-in-smoke-a-story-about-electrified-near+death (http://deadspin.com/5881337/feet-in-smoke-a-story-about-electrified-near+death)
When I used to work sound I always checked outlets for proper wiring and also took voltage readings between amplifiers and microphones just to be safe, especially with venues or bands whose equipment I hadn't previously inspected. There isn't as much vintage equipment being used on stage now but there are still plenty of garage and basement bands using funky gear, still some mis-wired outlets and still a few "collectors" who are misguided. As a repair tech you can't control all external situations, but you can make sure that every old amp has a proper chassis ground.
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powerful stuff.