Three Speaks
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That's a room node at the mic position for that frequency, and the reason we do the nearfield bass response measurements shown in the individual curves. For those, the mic is placed 1/4" from the center of the dust dome or phase plug and port opening, swamping any room reflections.
Nearfield bass response reflects performance with one boundary of reinforcement, i.e., 2-Pi alignment, and thus exaggerates the low bass response somewhat if the speakers are to be used in freespace, i.e., away from boundaries, as the 1-Meter RTA and sinusoidal measurements are taken. By evaluating both, you can tell how the bass will sound in different alignments relative to the higher frequencies.
Here are the quasi-anechoic on-axis high frequency (above 200 Hz) measurements for the three:
Nearfield bass response reflects performance with one boundary of reinforcement, i.e., 2-Pi alignment, and thus exaggerates the low bass response somewhat if the speakers are to be used in freespace, i.e., away from boundaries, as the 1-Meter RTA and sinusoidal measurements are taken. By evaluating both, you can tell how the bass will sound in different alignments relative to the higher frequencies.
Here are the quasi-anechoic on-axis high frequency (above 200 Hz) measurements for the three:
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Specially designed to kill the JBL mid-bass hump?
The B&W (Green) appears to have the highest sensitivity overall in this group. :yes:
Well, I (and Wiredbecker) have the advantage of also knowing which speaker sounds best....
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RadShak1251
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