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Messages - amp_MD

#1
Amplifier Discussion / Re: what's a good single 12" amp
October 08, 2016, 03:32:59 PM
I like the older SS Peavey amps like the Studio Pro 40 or 50.  Many of these can be found in decent condition for less than $100.  I found a mid-eighties 40 in a pawn shop a couple of years ago and gave $48 for it.  I cleaned it up and replaced the old original square magnet speaker with an 8 ohm Eminence Cannabis Rex and I've been playing it nearly every day since.  Nothing fancy, but excellent cleans, relatively light weight (about 24 pounds) and easy to pack around.  If I need dirt, I've got pedals that the amp takes just fine.
#2
At the very end of the video you linked to when you are putting pressure
on the plug (and input jack) there is audio from a radio or television program coming
from the speakers. (at least it sounds that way to me...)
This is called rectification, and it typically happens when the input to an audio amplification stage
becomes ungrounded.  In addition to the other suggestions made here, I'd check the input
jack itself and it's connection to the board, as well as all other ground connections near
the input jack.