Boston Acoustics SPZ50 Full Range Speakers

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[edit] Detailed Specs

  • Nominal Size 5-1/4" (135mm)
  • Recommended Amplifier Power 150 watts RMS
  • Nominal Impedance 3 ohm
  • Sensitivity [1 watt (2.83v) at 1m] 90dB
  • Frequency Response (±3dB in car) 50Hz-22kHz
  • System Type 2-way


  • 5-1/4” glass fiber composite cone woofer
  • Nearly 1” (22mm) of peak-to-peak excursion for great midbass from factory locations
  • Cast aluminum woofer basket with TwinStage™ and RadialVent®
  • 1 ½” voice coil for great power handling
  • Compact neodymium magnet structure
  • 1" Type-M1 aluminum alloy dome tweeter with off-Axis AMD™
  • 360° Full Rotation Axis Mount plus flush & surface/angle tweeter mounting kit
  • 24dB system-specific crossovers with extrusion cases


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Rating: 2.0/5 (7 votes cast)

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