Fender Bassman Amp - Bright / Deep - Which way is on / off??

Apr 20, 2020
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We have an AB165 Fender Bassman amp in the family that I'm just getting familiar with for playing with my bass and guitar. A couple questions about it.

1. Which way is on and off for the bright / deep switches?
2. I have Inputs 1 and 2 for both the Bass and Normal side. Do 1 and 2 take different signal paths? Inputs 1 and 2 sound a little different on the Normal side and curious if my ear is playing tricks on me or if there is a difference on the inputs.

Any help in getting to know my amp is much appreciated. I've wondered these things since I was a kid and figured it was time to find out.