Strobe or strobex, i still use it in a studio belonging to a friend, it's a killer and nobody is allowed to touch it without instruction. the guy who repairs them has a hole in the middle of his hand from one. the fish fryer is a great light as a are the strips, the swimming pool is a bit OTT and most have been scrapped.
the city packs are black with '7ths' which are 1/3 stops, the older magnaflash packs are in half stops.
you always have a light plugged in to X and then switch to A,B,C and put the other 2k and 2x1k into whatever other light's you plug in. often you would switch power during exposure (all done in the dark) or multiple flashes when shooting 10x8 at f64.
i nearly had an 'accident' with a magnaflash because all the orange bulbs had blown and i thought the pack was powered down when i pulled a light cable out.
they jump start your heart with 2k in hospitals, 5k will stop you dead.