Boston Acoustics

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Boston's premier performance 2-way car coaxial speaker


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Boston Acoustics SPG555.

  • 5 ¼ " copolymer cone woofer with butyl rubber surround
  • Woofer's neodymium motor structure offers extraordinary power-to-weight ratio
  • Type-S1 1" Kortec® dome tweeter
  • Quick-fit mounting cup simplifies tweeter installation
  • Separable and dockable model-specific crossovers


Nominal Impedance
4 ohm
Recommended Amplifier Power
75watts RMS-200 watts peak
Mounting Depth
2-1/4" (57mm)
Nominal Size
5 ¼-inch
Sensitivity [1 watt (2.83v) at 1m]
Frequency Response (±3dB in car)
System Type

Customer Reviews

Reviewer: Stan

Man, i installed these in my accord last week and wow! These sound so good, who ever tuned these must be an audio genius!

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