Dipole Excursion/Power Handling

[JohnL]

I don't believe I've ever seen a formula for this, someone please point me in the right direction kindly if I missed something obvious. I know maximum power handling for OB speakers are based on xmax rather than thermal. How do you figure how many watts it takes to push a speaker to xmax at a given frequency? Particulary if adding some EQ to lift the bottom end up, it'd be nice to know how much power gets you there. I've seen the cone excursion graphs in unibox, could I set it for a sealed box with a very low Q and figure it out like that? I don't think Thorsten's or Linkwitz's spreadsheet gives anything like that.

John

[ThomasW]

I've seen the cone excursion graphs in unibox, could I set it for a sealed box with a very low Q and figure it out like that?

Use the largest box setting possible, use the driver's Qts as the Qtc and you're good to go..... :T

[Jack Gilvey]

Yeah, that'll give you a good idea of excursion based on input power/frequency. Just remember to disregard the output predictions.

[Davey]

Jack,

SL's spreadsheet will compute all the values you're interested in.

http://www.linkwitzlab.com/closed-box1.xls

As mentioned by Thomas just set the box size to some large number....say 10,000 liters and you'll be set.

Davey.