Howdy - I've got an old Marshall Gold Back speaker laying around -
70 watts RMS

And I was just wondering if I could try it out in my 6505+ 112. (Basically, I don't know what "Ohms" are, and I don't want to blow up my amp.) I couldn't care less about the speaker - I've been trying to sell it for a long time for practically nothing, to no avail.

I'm not expecting it to sound better than my Sheffield, but hey, it's worth a try, right?
This here says your amp is 4/8/16 ohms switchable, so you could switch the speakers and set the ohms selector to 8 ohms.

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