X4 Portrait.jpg
S4 Back.jpg
X4 Portrait.jpg
S4 Back.jpg

X4 Upgrade (pre-2023)

$2,260.00

Replaces any X4 crossover before 2023. What you can expect from any of the upgrades offered - Improved soundstage, more precise imaging, more open/holographic presentation. Better clarity and detail across the entire frequency spectrum and deeper bass extension.

  • 2-way crossover

  • 91 dB sensitivity

  • 4 ohm impedance

  • 28 Hz - 28 kHz frequency response

  • 45-day in-home trial

  • price includes shipping to contiguous United States

  • Price shown for pair

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Replaces any X4 crossover before 2023. What you can expect from any of the upgrades offered - Improved soundstage, more precise imaging, more open/holographic presentation. Better clarity and detail across the entire frequency spectrum and deeper bass extension.

  • 2-way crossover

  • 91 dB sensitivity

  • 4 ohm impedance

  • 28 Hz - 28 kHz frequency response

  • 45-day in-home trial

  • price includes shipping to contiguous United States

  • Price shown for pair

Replaces any X4 crossover before 2023. What you can expect from any of the upgrades offered - Improved soundstage, more precise imaging, more open/holographic presentation. Better clarity and detail across the entire frequency spectrum and deeper bass extension.

  • 2-way crossover

  • 91 dB sensitivity

  • 4 ohm impedance

  • 28 Hz - 28 kHz frequency response

  • 45-day in-home trial

  • price includes shipping to contiguous United States

  • Price shown for pair