IDLE, OBSCURE GEAR-TALK WARNING: Ok gearheads, this has got to be one of the most interesting and obscure bass cabs ever and I'm wondering if anyone else knows of it or better yet has a photo. Quilter (which became QSC) made this cab in the early 70's and it was HUGE - I mean REALLY huge. It had 4 15's, 2 across the top, two across the bottom and a HUGE rectangular port in the middle. I believe the drivers were Altec 421A. Aside from being wide and tall, it was insanely deep. I'm always amused when I read guys saying how big the SVT 8x10 is because you could probably put 2 or 3 of them inside a Big Bertha - no joke. I played an eb3 thru a Marshall superbass and a Quilter Big Bertha at a friends house when I was may be 12 or 13 and his neighbor complained that her dishes were vibrating out of her cupboards. Anybody else ever seen one of these? Dimensions? Better yet does anybody have photo they can post? It was an awesome freak of a cab.