I had an older 15" Pegasus speaker cabinet that I loaded with an JBL-E130-8 (300 Watts, 8 Ohm). I bought the JBL speaker new, but I'm not sure when - maybe 20 years ago? The cabinet has a few scrapes (see pics), but the speaker is in great condition. The speaker has never been gigged and used only with my guitar for practice. It sounds great.
I stopped playing electric guitar about 4 years ago (switched to bass). Time to move it along.