I bought this cab used 20 years ago. I blew the speakers in it about seven years ago and replaced them with EV's. It sounded great with the original speakers, and even better with the EV's. This cab has been with me to over 1,000 gigs and a countless number of practices. I have the money to buy any rig that I could ever want... and I still use my Sunn, and have no plans on buying anything else at this time.
Where Obtained: Used
This cab. can be laid down horizontal or stood up vertical. It was designed to be horizontal, but it sounds good standing up.
It is a great sounding cab esspecially if you prefer 15's as I do. I loaded it with EV's and it sounds even better.
Two quarter inch plugs on the back.
I've owned this cab for about 20 years. I use it to play live all the time. I would give it a five for durability but I did blow the speakers some years back. I've put the thing through it's paces over the years so two blown speakers is not all that bad.