Posted by Norris Wilson [ 208.100.218.215 ] on November 05, 2008 at 18:07:29:
How would one deterimne the summing of two woofers in either MTM or MM arrangement, and their diferences? The woofers in question would be the JBL 2118J's. Just guessing they would be run from around 200Hz and up to around 2kHz.
The tweeter would be a Beyma CP385Nd with posible BMS 2193
elliptical 90x40 degree waveguide with 1.4kHz cut off.
http://www.jblpro.com/pub/obsolete/2118.pdf
Would using two wofers together in either of these vertical arrangements reduce or increase output, and or distortion levels?
What would be the possible pro's and con's of this type of dual woofer midrange versus a single driver midrange such as an Eighteen Sound 10NDA610?
http://www.eighteensound.com/index.aspx?mainMenu=view_product&pid=241
Also, what is the formula to calculate the nulls of a 90 degree angle between a woofer and tweeter? Again!
Thanks
NW
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