Yank
Bulbous Also Tapered
@Yank As mentioned in STF: I have had 10 pairs of Harbeth speakers with the 8" driver even older ones from the mid 90th. and have never had a brockenone even if I played louder but if you push them too loud you hear the distortion and if you still push further...
There's a point where they get "shouty", I always turn down a notch if it gets to that point
I've never managed to measure more than 5V AC at the speaker terminals at what I considered a "loud" level in my room.