will the 950 bass management do lfe+mains. Which means I would use the subs in the towers and subwoofer for the lfe content. Is it possible?

Gonk, you're the MAN

A few scenarios that can be done:

1) Subs in towers driven by left/right channel signals (with speaker's internal crossovers handling distribution of bass). In this scenario, the subwoofer gets the LFE and gets redirected bass from "small" center and surrounds, while the mains are set to "large" and handle their own bass. (Note that it is still possible to set a crossover for the "large" speakers, but that crossover is ignored because the speaker is not set to small and therefore does not receive any bass management.)

2) Subs in towers connected to LFE output of 950. In this scenario, you'd need to split the LFE output signal three ways (for the three subs - left tower sub, right tower sub, and dedicated subwoofer), the mains would be set to small, and all three subs would get redirected bass as well as LFE channel.

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gonk -- 950 Review | LFM-1 Review | Pre/Pro Comparison Chart | Saloon Links

I have the 950/7100 combo driving Pararadigm Monitor 90s (tower with powered subs) in front, CC-370 center and some old Bose 301s for (temporary) surround speakers, and the LFM-1 sub tied to the LFE channel. I've been using Gonk's option 1, with fronts set to Large, and it sounds great. Note that even in 2-channel bypass you'll be senging a signal to your sub, so you may need to adjust your sub's output if things get too boomy. With 5.1 signals (DVD or cable) it all works together just brilliantly. Give it a try, I hope you like it!

Actually, with the mains set to large, stereo bypass will not send anything to the sub. When mains are set to small and stereo bypass is selected, the mains get the unaltered analog signal while a copy of the source is digitized and passed through bass management to yield a sub signal, but this bass management does not occur when the mains are set to large.

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gonk -- 950 Review | LFM-1 Review | Pre/Pro Comparison Chart | Saloon Links