Need help ID'ing B&O 5 sided tower speakers

These are what B&O called Penta's. Very expensive for the period and self powered - so never really caught on around here.Having said that - I found myself really listening to these for the first time while installing display shelving in the listening rooms of the store I worked at. The guy I was working with and I sorta started out using 'em as a job site music source - by the end of the weekend - we were both pretty impressed!Since the rest of the center we were in at the time was closed - we could really crank these up - something I don't think I had ever done when demonstrating them for customers ( most B&O sold for looks). Penta's will play very loud , very cleanly and with something better than B&O electronics feeding 'em can sound remarkably good. Excellent combination of imaging ,detail and dynamics.
If I remember right - these do take some B&O specific connecting cord with their own "unique" connector. I also seem to remember that they could be driven either by speaker level (8ohm?) or line level (1.5V?)- depending on a switch on the base.
Not a audiophile speaker - but nice music would come thru them.Probably deserved more attention than they got in the late 80's - early 90's.

The model of these loudspeakers is called the BeoLab Penta, and B&O produced them for over fifteen years, in three versions (Penta I, Penta II, and Penta III). The type 6623 is the Penta II for the US market.

This was B&O's first generation of active speakers, and actually uses a single amplifier driving a passive crossover to a total of nine drivers, in a 5-way configuration. The amplifier actually performs very well, with a conservative 150W output, three pairs of output transistors, good heatsinking, and a very robust power supply. The Penta Is had a somewhat different connection panel, and a different design to the crossover (and thus sound a bit darker then the IIs and IIIs.) The only difference between the IIs and IIIs is the display electronics. Pentas generally have a very good service history, with the most common problems being flakey bias trimpots (causes overheating) and various display issues (in the Is and IIs).

I personally own a pair of Penta IIIs that I use as the front left and right in my video system, and I like them very much. They are somewhat lacking in detail and imaging (they're better in a larger, more reverberant room), but the bass response is really nice . . . full and warm but not boomy - and they're relatively insensitive to placement. They can also play quite loud, and can do so easily all day without blowing anything up.

Here's a link for more info, and somewhere on the site you can download a manual as well:

http://beoworld.org/prod_details.asp?pid=808