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SD + XMAX = SPL ...correct?

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Old 03-18-2007, 11:28 PM
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SD + XMAX = SPL ...correct?
If displacement is the main factor in SPL, how does wattage fit into the equation?

If you have 2 subs with the same Xmax and SD, but the RMS wattage on sub A is 250W and the wattage on sub B is 500W, how does that affect the SPL?

Will sub A achieve the same displacement but using less power?
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Old 03-18-2007, 11:38 PM
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That stuff on the MTX site about SPL is all false.
 
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Old 03-18-2007, 11:43 PM
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db's is a logarithmic equation.
yeah if you look closley it takes something like 6 15 inch solo x's to match the output of a jackhammer according to mtx.
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Old 03-18-2007, 11:52 PM
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Originally Posted by zinger002
db's is a logarithmic equation.
yeah if you look closley it takes something like 6 15 inch solo x's to match the output of a jackhammer according to mtx.
Kicker doesn't make a solo-x 15, and Yuli posted awhile back on this.. it was with 18" solo-x's and even more than 5 I think...
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Old 03-18-2007, 11:56 PM
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yea sorry cant type today, 10 12 and 18. maby i was thinking of the l7, idn! im confused!
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Old 03-18-2007, 11:56 PM
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Originally Posted by SPLN00B2
That stuff on the MTX site about SPL is all false.
So you're saying more displacement doesn't equal more SPL?
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Old 03-18-2007, 11:57 PM
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Yeah xmax has little to do with spl.
 
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Old 03-19-2007, 12:04 AM
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Then what does?
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Old 03-19-2007, 01:26 AM
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I always thought it was about how much air can you move and how fast can you move it. In that sense Surface Area and Xmax would go hand in hand. The new DD 9515'g' motor is doing 82mm.
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Old 03-19-2007, 01:49 AM
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Originally Posted by CanadianBassGuy
I always thought it was about how much air can you move and how fast can you move it. In that sense Surface Area and Xmax would go hand in hand. The new DD 9515'g' motor is doing 82mm.
You must not mean 82mm of x-max... do you?
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