Given my recent experience with M2s in my living room, I am revising my speaker recommendations. These recommendations are to hit up to 104dBC "audibly cleanly" at MLP with minimal spend. None of this is scientific; it's my observations/notes:

A. Passive bi-polars

1. For rooms less than 1800 cu. ft., M2s without a sub.

2. For MLP <= 10 feet: M5 or M60 without a sub; M2 with a sub in rooms larger than 1800 cu. ft.

3. For 10 feet < MLP <= 12 feet: M5 or M60HP without a sub; M2 with a sub in rooms larger than 1800 cu. ft.

4. For 12 feet < MLP <= 15 feet: M80HP without a sub; M80 with a sub

5. For 15 feet < MLP <= 18 feet: M100 without a sub; M80HP with a sub

B. Active LFR1100

Use when you have the following needs:

1. The highest possible spatial resolution in any size room
2. Unrivaled bass and mid-bass reproduction
3. Unrivaled macro and micro-dynamics from quiet to riot listening levels
4. Unrivaled soundstage depth
5. MLP greater than 21 feet.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated