[quote name='Bill Fitzmaurice' post='558530' date='Aug 2 2009, 02:54 PM']The only difference between an isobaric and standard alignment is the net cabinet volume required for the same response. That made it a fairly attractive proposition for Hi-Fi forty years ago, when driver and amplifier technology was not what it is today, and 16 cubic foot and larger cabinets weren't at all unusual. Using a second driver to get cabinet size down to a WAF was of some merit. The downside to isobaric is that the net output is still the same as can be realized with only one driver, and with the far smaller cabinet sizes required by modern drivers the net volume savings don't amount to much, certainly not enough to justify the added cost compared to a single driver cab of the same response and output capacity. In laymen's terms, why pay for a 2x10 that sounds like a 1x10?[/quote]
I've recently purchased the sp210 about a month ago and was totally amazed by it. I play a lot of styles from pop to soul to rock and clarity is always more important that just making everything vibrate. I gig about 3 times or more a week. I like a cab with a nice warm sound but with a bit of bite or punch when I need it (i.e. flexble). I had a markbass 2x10 for small gigs, which is easy for getting on the train etc in London, which was nice and worked a treat with my markbass 1x15 as full rig. I used the little Markbass head.
When I tried the sp210 over the markbass 2x10 in the shop, It was no contest ORANGE wins, also all the gigs I have done with just orange, all I have received is praise on a true bass sound I get, warmth with punch and bite. The Markbass sound very flat after trying the orange, while the orange brings out the bottomend like small 1x15 but with all the punch.. It's definitely louder, more dynamic and warmer than the MB2x10, when I added my 1x15, I had classic big classic bass rig that was great in very large venues, when your cab is helping the PA....
Don't mock it till you've tried it.. also, it's almost as light as the MB so I does't break my back either....