I still have nightmares about Bose 802s! We used eight or ten of them on
a PA rig when I was in university, for smaller rooms or occasionally for
foldback. The equalisers were prone to expiring at no notice. They were
quite good when used as stepladders though, as they would stack nicely.
The cabs would take all kinds of abuse, but those equalisers were a
horrible idea, IMO.

ouch - 802s for foldback, far to wide dispersion. A L-R stack works well
though, but the old adage stands (I still have four of them) - I hear no
highs, I feel no lows, it sounds quite naff, it must be Bose. Still work
well for speech / lght acoustic stuff and the EQ is fine if you hit it
before every gig.

Was it the 802 that used a light bulb for protection? I seem to remember
seeing them self-illuminate when driven a bit too hard, but it's a lot
of years ago, so it may have been some other speaker entirely.

No. It was some other speaker entirely.