[quote name='Alien' post='518892' date='Jun 19 2009, 09:55 PM']Areas of circles isn't critical when comparing one driver against another, but it is important to realise that you do need [i]some kind[/i] of square measurement, since a speaker cone has a surface area (ie 2 dimensions, not just the 1 you've used).
If you say that a 4x10 is equivalent to 10 x 10 x 4 = 400 and that a 1x15 is equivalent to 15 x 15 x 1 = 225 then you'd be on the right track.
Thing is, you then need to bring in the third dimension (ie how much air the speakers move). Assuming the 10's you're using have an Xmax of 4mm (which is more than most of them have) then you're looking at a displacement of 10 x 10 x 4 x 4 = 1600
The 3015LF has an Xmax of 9.6mm, which gives you 15 x 15 x 9.6 x 1 = 2160.
3015LF wins, hands down.
A[/quote]
WHOOOSH!!!
(looks up...)
wassssaaattt!!! (only just come to terms with an indoor lavvy)
Edit: Sorry guys, find this stuff interesting and want to learn, but it won't sink in! I'll persevere...