Pioneer S-W1EX Brochure & Specs page 11

dB SPL dB SPL
100 100
95 95
90 90
85 85
80 80
75 75
70 70
65 65
60 60
10 10 100 100 1000 1000
General Floor-Standing Speaker General Floor-Standing Speaker
Axis Frequency Response Axis Frequency Response
ABD
Vertical standing waves are a phenomenon that occurs in
nearly all speaker enclosures. Responsible for uneven,
boomy or sucked out bass response, vertical standing
waves generated inside tall fl oor-standing cabinets are
extremely diffi cult to control. But not for Pioneer. We
have developed unique acoustic simulation technology,
ABD (Acoustic Balance Drive), which allows us
to calculate the infl uence of the cabinet's vertical
standing waves on the speaker frequency response,
taking into account bass drivers and port locations.
Using this software, the port and bass drivers of
the EX Series are placed in the best position
to cut this infl uence to a minimum. This new
technology allows the fi rst vertical standing
wave to be totally canceled and the infl uence
of the second one to be signifi cantly reduced.
The result is precise and dynamic bass with
no low midrange coloration.
Acoustic Balance Drive (ABD) Acoustic Balance Drive (ABD)
dB SPL dB SPL
100 100
95 95
90 90
85 85
80 80
75 75
70 70
65 65
60 60
10000 10000 Hz Hz 10 10
Floor-Standing Speaker with ABD Technology Floor-Standing Speaker with ABD Technology
11
Canceled Standing Wave Canceled Standing Wave
100 100 1000 1000 10000 10000 Hz Hz