Here's one for the tech heads.
My amp is too loud for rehearsals (yeah, i know), in that it is working with the master vol at around 1 which makes control too sensitive. So I decided to make an attenuator to insert in the send/return loop. Less signal to work with means less to amplify.
I made a T-pad with 2x 5K resistors in line and a 22k pot to ground between them. Essentially a voltage divider.
The result:- with the the pot set to minimum (i.e. dumping everything to ground), NO CHANGE! but with the pot set to max resistance (almost no dumping) it got slightly louder.
How can resistors make it louder? Any clues?