Boston Acoustics HSi 480, HSi Series HSi 485, HSi Series HSi 250, HSi 470T2, HSi 460T2, HSi 455, HSi Series HSi 470, HSi 460, HSi 475, HSi 475T2, HSi 455W2, HSi Series HSi 275, HSi Series HSi 270, HSi Series HSi 255 User Manual

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HSi Series

Custom Speakers

in-ceiling,in-wall

play invisible. play smart.

Designed for stunning sound and ease of installation, HSi Series Custom loudspeakers expand the realm of quality sound to create an audio system that pleases even the most critical ears. In fact, these speakers perform as well as Boston’s highly regarded traditional loudspeakers. Whether you need to fill your favorite room

with sound, install a whole-houseaudio system or design a custom home theater, Boston has high performance

HSi Custom speakers that fit every application. All with the uncompromising performance you expect from Boston.

Key features

Boston designed tweeters for crystalline high-frequencysound

Advanced Boston woofers for more bass from less amplifier power

Easy-installfeatures for existing walls or ceilings

Paint-readysurface allows you to match your wall or ceiling finish

Reduced Bezel Design for seamless integration with the wall or ceiling

Magnetic easy

Optional Accessories

Cover Plates

New Construction Brackets

3-WayLCR

2-WayLCR

 

 

 

 

HSi 4830

3-Way8”In-CeilingSpeaker

HSi 455W2

2-WayDual 51/4”In-WallSpeaker

Single Speaker Stereo

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSi 460T2

 

 

HSi 470T2

 

 

 

 

6” Stereo In-CeilingSpeaker

61/2” Stereo In-CeilingSpeaker

(6” driver in a 51/4” cutout)

HSi 475T2

61/2” Stereo In-WallSpeaker

Fire Rated Back Boxes

51/4”

 

61/2”

 

 

 

 

 

 

 

 

 

 

 

 

HSi 250

HSi 270

2-Way51/4”In-CeilingSpeaker

2-Way61/2”In-CeilingSpeaker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSi 460

HSi 470

2-Way6”In-CeilingSpeaker

2-Way61/2”In-CeilingSpeaker

(6” driver in a 51/4” cutout)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSi 255

HSi 275

2-Way51/4”In-WallSpeaker

2-Way61/2”In-WallSpeaker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HSi 455

HSi 475

2-Way51/4”In-WallSpeaker

2-Way61/2”In-WallSpeaker

8”

HSi 480

2-Way8”In-CeilingSpeaker

HSi 485

2-Way8”In-WallSpeaker

What it means to be from Boston

First and foremost, Boston is an engineering company, and every Boston system is optimized to meet the highest performance standards (our own). Of course, performance is only one measure of value. So we’re careful to build all our products with strict attention to everything from the choice of materials to the details of fit and finish. It’s how we’ve been exceeding the expectations of serious listeners for more than thirty years.

bostonacoustics.com

Specifications

 

HSi 250

HSi 270

HSi 460

HSi 470

HSi 480

 

2-WayIn-CeilingSpeaker

2-WayIn-CeilingSpeaker

2-WayIn-CeilingSpeaker

2-WayIn-CeilingSpeaker

2-WayIn-CeilingSpeaker

 

 

 

 

 

 

FREQUENCY RESPONSE (±3dB)

75Hz-20kHz

65Hz-20kHz

58Hz-20kHz

54Hz-20kHz

45Hz-20kHz

 

 

 

 

 

 

RECOMMENDED AMPLIFIER POWER

10-90watts

10-90watts

10-100watts

10-100watts

10-125watts

 

 

 

 

 

 

TWEETER

3⁄4” (20mm)

3⁄4” (20mm)

Pivoting 3⁄4” (19mm)

Pivoting 1” (25mm)

Pivoting 1” (25mm)

 

 

 

Kortec® Soft Dome

Kortec® Soft Dome

Kortec® Soft Dome

 

 

 

 

 

 

WOOFER

51⁄4” (135mm)

61⁄2” (165mm)

6” DCD™ Copolymer (152mm)

61⁄2” DCD Copolymer (165mm)

8” DCD Copolymer (200mm)

 

 

 

 

 

 

EXTERNAL DIMENSIONS

81⁄16” (205mm) diameter

105⁄16” (262mm) diameter

81⁄16” (205mm) diameter

105⁄16” (262mm) diameter

1215⁄16” (329mm) diameter

 

 

 

 

 

 

MOUNTING HOLE CUTOUT

63⁄4” (171mm) diameter

87⁄8” (225mm) diameter

63⁄4” (171mm) diameter

87⁄8” (225mm) diameter

107⁄8” (276mm) diameter

 

 

 

 

 

 

MOUNTING DEPTH (FROM SURFACE)

31⁄16” (78mm)

4” (100mm)

41⁄4” (108mm)

43⁄4” (121mm)

5” (127mm)

 

 

 

 

 

 

 

HSi 255

HSi 275

HSi 455

HSi 475

HSi 485

 

2-WayIn-WallSpeaker

2-WayIn-WallSpeaker

2-WayIn-WallSpeaker

2-WayIn-WallSpeaker

2-WayIn-WallSpeaker

 

 

 

 

 

 

FREQUENCY RESPONSE (±3dB)

75Hz-20kHz

65Hz-20kHz

65Hz-20kHz

52Hz-20kHz

45Hz-20kHz

 

 

 

 

 

 

RECOMMENDED AMPLIFIER POWER

10-90watts

10-90watts

10-100watts

10-125watts

10-150watts

 

 

 

 

 

 

TWEETER

3⁄4” (20mm)

3⁄4” (20mm)

1” (25mm)

1” (25mm) Kortec

1” (25mm) Kortec

 

 

 

Kortec® Soft Dome

Kortec® Soft Dome

Kortec® Soft Dome

 

 

 

 

 

 

WOOFER

51⁄4” (135mm)

61⁄2” (165mm)

51⁄4” Copolymer (152mm)

61⁄2” DCD Copolymer (165mm)

8” DCD Copolymer (200mm)

 

 

 

 

 

 

EXTERNAL DIMENSIONS

101⁄8 x 71⁄2”(257 x 191mm)

119⁄16 x 813⁄16” (294 x 224mm)

101⁄8 x 71⁄2” (257 x 191mm)

119/16 x 813⁄16” (294 x 224mm)

133⁄8 x 105⁄16” (340 x 262mm)

 

 

 

 

 

 

MOUNTING HOLE CUTOUT

815⁄16 x 6” (228 x 152mm)

10 x 73⁄8” (254 x 187mm)

815⁄16 x 6” (227 x 152mm)

10 x 73⁄8” (254 x 187mm)

1113⁄16 x 87⁄8” (300 x 226mm)

 

 

 

 

 

 

MOUNTING DEPTH (FROM SURFACE)

23⁄8” (60mm)

3” (76mm)

27⁄8”(73mm)

31⁄2”(89mm)

313⁄16”(97mm)

 

 

 

 

 

 

 

HSi 4830

HSi 455W2

HSi 460T2

HSi 470T2

HSi 475T2

 

3-WayIn-CeilingSpeaker

2-WayIn-WallSpeaker

Stereo In-CeilingSpeaker

Stereo In-CeilingSpeaker

Stereo In-WallSpeaker

 

 

 

 

 

 

FREQUENCY RESPONSE (±3dB)

48Hz-20kHz

65Hz-20kHz

75Hz-20kHz

60Hz-20kHz

52Hz-20kHz

 

 

 

 

 

 

RECOMMENDED AMPLIFIER POWER

10-100watts

10-125watts

10-70watts

10-90watts

10-125watts

 

 

 

 

 

 

TWEETER

1” (25mm)

1” (25mm)

Dual 3⁄4” (20mm)

Dual 1” (25mm)

Dual 1” (25mm)

 

Kortec® Soft Dome

Kortec® Soft Dome

 

Kortec® Soft Dome

Kortec® Soft Dome

 

 

 

 

 

 

MIDRANGE

31⁄2” (89mm)

 

Stamped steel copolymer

 

 

 

 

 

 

 

 

 

 

WOOFER

8” (200mm)

Dual 51⁄4” (135mm)

6” (152mm)

61⁄2” (165mm)

61⁄2” (165mm)

 

DCD Copolymer cast

Copolymer

DCD Copolymer

DCD Copolymer

DCD Copolymer

 

 

 

 

 

 

EXTERNAL DIMENSIONS

125⁄8” (321mm) diameter

155⁄8 x 9” (397 x 229mm)

81⁄16” (205mm) diameter

105⁄16” (262mm) diameter

119⁄16 x 813⁄16” (294 x 224mm)

 

 

 

 

 

 

MOUNTING HOLE CUTOUT

107⁄8” (276mm) diameter

141⁄4 x 75⁄8” (361 x 193mm)

63⁄4” (171mm) diameter

87⁄8” (225mm) diameter

10 x 73⁄8” (254 x 187mm)

 

 

 

 

 

 

MOUNTING DEPTH (FROM SURFACE)

6” (153mm)

23⁄4”(70mm)

41⁄4” (108mm)

49/16” (115mm)

31⁄2” (89mm)

 

 

 

 

 

 

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