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Re: Stair Cardioid Subwoofer ArrayHey Guys,Okay First up is a polar measurement made of a 2 x 18" horn loaded subwoofer in landscape mode, measured at 5 degree increments at a distance of 10m. Looking at 1/3rd octave intervals from 44.5Hz to 200Hz.It clearly demonstrates that its is not a point source, but has some directivity.Next we place a second enclosure alongside, with its terminal shorted and measure again, this polar is shown as a blue trace overlayed on the single reference trace (black).[ATTACH]153286[/ATTACH]In the next post I'll show an enclosure on each side and then spaced enclosures.cheersferrit
Re: Stair Cardioid Subwoofer Array
Hey Guys,
Okay First up is a polar measurement made of a 2 x 18" horn loaded subwoofer in landscape mode, measured at 5 degree increments at a distance of 10m. Looking at 1/3rd octave intervals from 44.5Hz to 200Hz.
It clearly demonstrates that its is not a point source, but has some directivity.
Next we place a second enclosure alongside, with its terminal shorted and measure again, this polar is shown as a blue trace overlayed on the single reference trace (black).
[ATTACH]153286[/ATTACH]
In the next post I'll show an enclosure on each side and then spaced enclosures.
cheers
ferrit
