Boston Acoustics

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2-Way 6-1/2" In-Wall Single Speaker Stereo

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Boston Acoustics.

With dual woofer voice coils and both left- and right-channel inputs, the HSi 475T2 in-wall speaker delivers single-speaker stereo to hallways and other small spaces. Designed for stunning sound and ease of installation, HSi 475T2 in-wall loudspeaker expands the realm of quality sound to create an audio system that pleases even the most critical ears.

  • Dual 1-inch Boston designed Kortec tweeters
  • 6 1/2-inch Boston Deep Channel® 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 NCB6


Nominal Impedance
Dual 8 ohms Single input 4 ohms
Crossover Frequency
Mounting Depth (from surface)
3-1/2" (89mm)
Bass Unit
6-1/2" (165mm) Deep Channel® copolymer
Recommended Amplifier Power
10-125 watts
Frequency Response (±3dB)
Sensitivity (1 watt (2.83v) at 1m)
Dual 1" (25mm) Kortec dome
External Dimensions
11-9/16 x 8-13/16" (294 x 224mm)
Mounting Hole Cutout
10 x 7-3/8" (254 x 187mm)


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