Induction Dynamics SW1 - Manual (Page 6)

5
Subwoofer
Information
Subwoofer Design
Non-realistic, “boomy” bass frequencies are so prevalent in the home theater world that
some listeners have never heard a well-tuned subwoofer. The “boom” occurs because every
subwoofer has a natural resonance peak—that is, every subwoofer will naturally produce
a narrow range of low frequencies at a higher volume than the rest. This “boom” drowns
out higher frequencies your subwoofer produces, resulting in diminished performance and
muddy, poor-quality bass.
Induction Dynamics® engineers its subwoofers with high-performance drivers and
specialized filter circuits to eliminate resonance peaks and produce a fuller sound expressing
all bass frequencies.
Most subwoofers do not attempt to reproduce ultra-low frequencies because of the distortion
created by excess excursion. Induction Dynamics eliminates this distortion with a patented
frequency-selective excursion limiter. The excursion limiter allows the subwoofer to produce
ultra-low frequency sound but prevents the driver from overexerting and causing distortion
that could ruin your listening experience; the limiter itself is transparent, operating only at
specific frequencies without audibly switching on and off.
SW1 Push-Pull Design
The SW1 features an innovative subwoofer configuration where dual subwoofers in each
cabinet are mounted in a compound push-pull configuration. Mounting the drivers in this
way allows them to act as a single driver with double the mass and double the motor strength,
yet requiring an enclosure only half the size needed by a single driver. The compound push-
pull configuration reduces subwoofer distortion and improves bass control.