I have some older amps with the A, B or A+B switching. The best way to use the speaker options, is to use a set of speakers in two seperate spaces (rooms/areas). They would normally be switched either A or B, depending on which room/area you were in. The other option of A+B can be used for bi-wiring one set of speakers if that is desired.
Dumb lo-fi question.
I have an old (1980) Toshiba receiver that I use down at my cabin. Have been pondering a slow....very slow...upgrade path of that lo-fi system and I have a question. The receiver is rated at 25 wpc. It has two sets of left and right speaker outputs. In other words it will drive 4 speakers. Does that mean it will send 25 watts to each of the four speakers or 12.5 watts to each of the four speakers?