I won't ask why you want to bypass the speaker switch, but here is my two cents worth, The speaker plug for my Imperial 8100 series amplifier is a molex plug just in front of one of the 5U4 rectifiers, You will see a wad of wires going toward the speaker switch. You would need to interrupt that wad of wires to bypass the speaker switch. There will be a Channel 1 bass wire and treble wire and a common and a Channel 2 bass wire and treble and a common. There is a schematic in the "Downloads" section of this forum, at the top of this page. Click on to that and go down to "Magnificent Magnavox" then select "amps" and scroll down until you find the 81-03 amp listed with its Sams file. I would strongly recommend that you be absolutely certain of the need to interrupt this wiring before you attempt to do so. That speaker switch would need to have been blown to smithereens or missing altogether before I personally would contemplate such a move. Those speaker switches are commonly electrically "dirty" but I have never actually seen or experienced a bad one, or one that needed to be replaced. I'd think that would be fairly rare. I wish you well and hope this has been of some help to you.