First , Hello everyone, Im a new person here. I have a Sunn 2X15M cabinet with the Magna Alnico Speakers.I bought it with a Sunnn Concert Bass head, and I believe it is from about 1972. I have questions about the cabinet and speakers ( cabinet is the front loaded cabinet with the cool looking white port on the side). Anyhow, Aside from power handling, how do you like the tone of these old Magna speakers? I would guess that with a good tube amp they would be very warm and rich sounding. My main QUESTION ; is whether anyone uses these speakers and/or cabinets for guitars? I read through the search, and found out these speakers arent bass or guitar specific, and seeing as how Townshend used 15's- albeit JBL's- in the old cabinets in the 60's, I am wondering if the "MAGNA 15 SPEAKER" and/or the " 2x15M CABINET" WOULD BE A GOOD GUITAR RIG used with a good tube amp? One concern from what i read tonight is that I think this could be a particle board cabinet. I have not checked. If it is I'm going to get rid of it, so watch for it-it could be up for grabs. Anyone know what the value of a Magna 2X15 speaker is? THANKS!