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Speaker Information
S4X™ Crossover
The heart of Induction Dynamics is found in the S4X™ Super Fourth-Order Crossover. The
patented S4X inductively couples crossover coils and optimizes each driver’s performance,
individually and interactively with the other drivers. This greatly increases control over
driver range, frequency response, phase and impedance. Because S4X produces such a
steep crossover slope and thus a flatter frequency response, Induction Dynamics is able
to use the best possible drivers for each range of frequencies. This allows us to sonically
match every speaker in our lineup and to create speaker models able to perform in any
combination and in any acoustic environment.
The S4X optimized frequency response means music that moves dramatically up and down
in pitch will never fade in or out, but rather maintain its power as it seamlessly crosses
over from one driver to the next. It also means that frequencies critical to human speech
(frequencies that deliver consonants like “S” and “C”) will sound as natural coming from
your speakers as they would in real life—making dialogue from movies and television sound
crisp and clearly understood.
Above: The S4X crossover routes audio signal to their intended drivers at specific frequen-
cies (700 Hz, 3800 Hz). Subwoofer crossover points are generally selectable through your
subwoofer amplifier. Induction Dynamics recommends a subwoofer crossover point be-
tween 50 - 60 Hz.