Wilson Audio WATT Series 7 - Manual (Page 14)

The WATT is designed around a massive, yet compact, enclosure utilizing pro-
prietary polymer materials technology. The enclosure material exhibits excellent inter-
nal damping and a correct mechanical impedance match to the frames of the drivers.
Additional mechanical tuning is provided by null point placement of lead alloy ingot
blocks, bituminous surface treatment and rigid cross-bracing.The acoustical tuning of
the low frequency system is modeled after the quasi-third order Butterworth response,
(see figure 1 below), which provides linearity in the upper-bass (without the usual mid-
bass hump) with superior transient performance. The low-frequency range of the system
is normally extended with a Wilson Audio Puppy high speed woofer. The crossover
network uses multiple slopes to achieve acoustical phase linearity. Minimum energy/
time-storage behavior in the crossover is achieved by using only the finest audio-grade
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Figure 1
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