Boston Acoustics

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2-Way 5-1/4" LCR In-Wall Speaker

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Boston Acoustics.

The HSi 255 in- wall effortlessly reproduces the all subtleties of today’s most dynamic digital sources for a more realistic entertainment experience, delivering improved bass performance from a 5-1/4-inch woofer and crystalline high-frequency response from a 3/4-inch Kortec® tweeter. It’s a solid performer in the Boston tradition.

  • 3/4-inch tweeter
  • 5-1/4-inch woofer
  • Easy-install features for existing walls or ceilings
  • Paint-ready surface allows you to match your wall or ceiling finish
  • Reduced Bezel Design for seamless integration with the wall or ceiling
  • Magnetic grilles for easy installation
  • Optional new construction bracket NCB5


Nominal Impedance
8 ohms
Crossover Frequency
Mounting Depth (from surface)
2-3⁄8" (60mm)
Bass Unit
5-1⁄4" (135mm)
Recommended Amplifier Power
10-90 watts
Frequency Response (±3dB)
Sensitivity (1 watt (2.83v) at 1m)
3/4" (19mm) Kortec dome
External Dimensions
10-1⁄8 x 7-1⁄2"(257 x 191mm)
Mounting Hole Cutout
8-15⁄16 x 6" (228 x 152mm)


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