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MSX Sub 300 Active Compact 8-Inch Subwoofer

Prices as of September 25, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$549.00
Sep 12 · Macy's
Best price
$549.00
−0% vs high
14-day high
$549.00
All stores
$549$549$549
Sep 12Sep 25
  • Macy's
Lowest in 14 days: $549.00 at Macy's. Highest: $549.00. Current best is 0% below the 14-day high.

About this product

The Cambridge Audio MSX Sub 300 Active Compact 8-Inch Subwoofer is a high-performance audio component designed to enhance home entertainment systems with deep, precise low-frequency response. Featuring a built-in 300W amplifier and an 8-inch driver, it delivers powerful bass in a compact form factor that fits easily into small spaces. Intelligent digital signal processing (DSP) ensures stable, articulate sound by dynamically managing frequency response and output. The subwoofer includes crossover and phase controls for seamless integration with existing speakers, enabling cohesive surround sound. It connects via RCA inputs and outputs, and comes with essential accessories including a power cable and setup guides.

  • 300W active power
  • 8-inch driver
  • intelligent DSP processing
  • RCA input and output
  • crossover and phase controls
  • compact 10.4" x 10.9" x 12.4" size

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MSX Sub 300 Active Compact 8-Inch Subwoofer — Price History