These are two Quantum (guitar) cabinets that I loaded with midbass woofers for doubling use with bass guitar and upright bass. The tone from them is actually surprisingly good and can get very round if you tweak your bass/amp-the kind that you feel. This was just dumb luck that it worked out so well. I'm ready to move on to an Acme B1 as my small rig and now have a Bag End 210 for my medium rig. This needs to find a new home!
Both cabs are 8 ohms with parallel in/out 1/4" jacks and come in around 20-25 lbs IIRC. Power handling is 180w RMS / 240w peak for the 4x6" and 140w RMS/200w peak for the 2x8" based on driver specs. I wouldn't put over 200-250w in if you're a worrier but you can use a higher powered amp if you're careful. I used my 1001RB-II while listening carefully for any sign of strain. It'll hurt your hearing before you push the speakers. This would make a great mobile mate to an MB200.
For reference, you can mix in a low B in a three piece blues band with no issues. I did with just the 4x6 at a jam/tryout using my B5F. You won't rumble a large dance hall but you can sure shake up your garage. Oh, the 4x6 is also a slant. You can hear yourself from 6 feet away. It's nice.
$100 for the rig, add shipping. Pickup is free.

The price is firm. Just asking what I have in it. FedEx quoted $30 to Virginia and $50 to New York. $60 to Philly.
Drivers used:
http://www.mcmelectronics.com/product/55-1605 and
http://www.mcmelectronics.com/product/55-1170
They're 17" tall, 16 1/2" wide, and 9 1/2" deep except for the slant. It's 7 1/2" at the top.
A note on construction: There are no strange vibrations or rattles at any volume. I both screwed the drivers into the cab and put on the grilles. I also screwed the front and back into the corner blocks to prevent any unwanted vibrations, just in case. I soldered all speaker connections in place of the cheap connectors in place. The screws used don't all match but they do the job. I just hit the parts bin when I was fixing them up. They weren't beauty pageant champs anyways but I made sure they'll take a beating. (The corners, clamps, and grills are metal!)
