The vibration levels of the PV1 (red) are
compared with those of a conventional
subwoofer (blue) of similar bandwidth,
output capability and drive unit radiating
area, but using a single 250mm driver in a
heavily braced wooden cabinet.
Measurements were made by scanning
the enclosure surfaces with a laser beam
and summing over the total area in each
case.
EQ = i
EQ = ii
EQ = iii
low-pass filter 80Hz
Bandpass output level 90dB at 1m
PV1 - frequency response
PV1 - total harmonic distortion
Sound output due to cabinet vibration
100
10
1
0.1
0.01
-20
-30
-40
-50
-60
-70
-80
-90
dB
dB
%
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