Some of the small magnet alnico 12's make really nice guitar speakers if you aren't pushing more than a few watts.
John C.
I have five (1990 vintage) NOS 8 inch, 8 ohm ceramic magnet PA speakers which were given to me last year, these were made by "Lowell Magnetics". Model 8C5.
They also have the model TLM-70 70V line matching trannies mounted on the back of the frames, I would remove them, for MI purposes.
One speaker is a bit "crusty and dusty" with some light surface rust around the magnet, from poor storage (it was in the top of their box),
and still works OK, and the other four are in pristine condition. These also have the round, perforated metal protective covers (as used in ceiling mounts)
Would they be any good for use in a low to medium power guitar amp? I'm thinking along the lines of a 6L6GC "Champzilla"
(see my "Uglytron posting) or PP 6V6GT or 6BQ5 / EL84 (15-20 Watts) . With four, I could go with an 8 ohm series / parallel connection,
or just use two in parallel for 4 ohms load. The Uglytron OPT has 4, 8 and 16 ohm secondary taps, so I could try multiple speaker configurations
including a somewhat unconventional dual 4 0hm loading of the 0 to 4 ohm, and the 4 to 16 ohm taps, just because it
can be done....
FWIW, the "Uglytron", which is basically a beefed-up Champ, using all Russian tubes, 6L6GC, 6SL7 (6H9C / 6N9S) and Sovtek 5AR4/GZ34, sounds
very good into an 8 inch Ted Weber 8 inch "Signature" MI speaker, in a small 14 inch square, by 4 inch deep, mostly open back cab..
/ed B