silly question, but what does the "2" refer to in 805d2? is this the same model is the current 805?
Any thoughts on how this improves over the pm1s? I know its a bigger woofer...Will the 805 be able to handle all kinds of music, or will it have some limitations due to having just 1 main woofer vs floorstander?
The 2 is meaningless in the 805. There was a previous 800d series, but it did not include a diamond version of the 805. D2 signifies the 800 diamond series vs the older 800 D series, but it is the first and only diamond 805.
Differences between the PM1 and the 805 are pretty large. First, and most marketable is the diamond tweeter, though the PM-1 has a newer tweeter technology than the other lines, and it is closer to the diamond than anything else B&W offers. Still, the 805 tweeter is better. The larger woofer is significant for many reasons. More extension, and capable of more output before it compresses are the most important. The 805 will go lower and louder. Finally, the crossover is improved quite a bit. One of the things that makes the PM-1 sound like it goes lower than it really does is a bass bump in the lower midbass. The PM-1 sounds very good, but it is not a flat speaker. The 805 does not really do the bass bump for fake extension. Basically, you are getting more resolution, more volume, and more extension.
As to all kinds of music, yes it can handle all kinds of music but there are some limitations without a subwoofer. If you look at the frequency chart I posted earlier in the thread, you will see it covers all but the lowest of the basses. Of course when you go to electronic music, you can go even lower, and sub basses can frequently hit 30Hz in published music. I would add a sub, but something like REL which is fast and musical would be my first choice (I use a REL R series). Moving up to a floorstander can give you more extension, but as you move up the range, you are only getting a little bit more extension for each step up. I would still recommend a sub with a floor stander. Of course if your room is larger, a floorstander is probably a must. The 805 can only move so much air.
A note on bass extension. The room plays a huge roll here, so specs only matter so much in an untreated room. Room treatments do not have to be ridiculously expensive and can make a more dramatic difference than say choosing an 803 over an 804.