Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: like already said Multiple drivers for each pass band. posted by Tre' on April 24, 2017 at 11:31:29
Answers on line array sensitivity can be found in my Near Field Line Array white paper.
SPL calculations are on page 17-18.
"For example, two speakers connected in
parallel and mounted within a wavelength center-to-center spacing would yield up to a 6dB increase in SPL. 3dB from the increase in acoustical energy and 3 dB from the reduction in impedance."
That's what I said and what Bill said.
Have Fun and Enjoy the Music
"Still Working the Problem"
Well with two sources a half wl apart, you get +6dB over one on axis only.
Think about a polar plot, the diameter is level vs angle and the area within the polar circle summed is the total acoustic power.
Two sources that far apart produce a figure 8 pattern who's peak value is +6dB on axis but the area enclosed by the polar circle is only 3 dB more than each source individually.
Move those sources to less than 1/4 wl apart and now you have a circle who's diameter is +6dB and the total energy is now 6dB greater than one was.
depends on the spacing and location
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: