Boston Acoustics 351361381 User Manual
351
361
381
Designer Series
In-wall Speaker Systems
2
Specifications 351 361 381
Frequency Response (±3dB) 65–20,000Hz 57–20,000Hz 48–20,000Hz
Recommended Amplifier Power 10–100 watts 10–125 watts 10–150 watts
Nominal Impedance 8 ohms 8 ohms 8 ohms
Sensitivity [1 watt (2.83v) at 1m] 90dB 89dB 89dB
Tweeter Kortec 1" (25mm) Kortec 1" (25mm) Kortec 1" (25mm)
soft dome soft dome soft dome
Bass Unit 51⁄4" (135mm) copolymer 61⁄2" (165mm) copolymer 8" (200mm) DCD copolymer
Crossover Frequency 3500Hz 3400Hz 3200Hz
External Dimensions (HxW) 91⁄2 x63⁄4" (241 x 171mm) 109⁄16 x73⁄4" (268 x 197mm) 123⁄8 x 99⁄16" (315 x 243mm)
Mounting Hole Cutout (HxW) 83⁄4 x53⁄4" (223 x 146mm) 97⁄8 x71⁄8" (251 x 181mm) 113⁄4 x 81⁄2" (298 x 216mm)
Mounting Depth (from surface) 25⁄
8" (67mm) 2
7
⁄
8" (73mm) 3
1
⁄
4" (83mm)
Introduction
The Designer Series in-wall speakers are designed to be as accurate, clean and musical as our freestanding speakers. The unobtrusive, flush-mount design makes them ideal for installation in walls
or ceilings of rooms where space or decor make conventional speakers undesirable or inappropriate. They can also be used for front and/or rear channels in a home theater system.
The front surface has a matte white finish. The speaker can be installed as is, or can be painted to
match the room environment by using the supplied painting mask. The epoxy-painted, galvanized
steel speaker grille is removable.
The speakers are constructed of rugged materials suitable for use in a variety of environments,
indoors or out. Offering complete placement flexibility, all exposed components are moisture-,
rust-, and temperature-resistant for worry-free installation in the bath, kitchen or on the patio.
Their smooth, detailed sound comes from two highly refined driver elements: a powerful, longexcursion copolymer bass unit and our 1-inch (25mm) Kortec
™
soft dome tweeter. The silk-like
fabric dome delivers a remarkably accurate response for outstanding clarity and articulation. The
tweeter and bass unit are mounted close together in a point-source configuration for excellent
imaging and extremely broad, uniform dispersion. This is important, because wide dispersion gives
you the flexibility to install the speakers where they look the best (high on the walls, for example),
yet still project a smooth, natural sound throughout the listening area.
In combination, these advanced engineering technologies and Boston’s state-of-the-art manufacturing facilities give the Designer Series a level of performance unmatched by other in-wall speakers.
3
Installation Instructions
NOTE: This manual assumes the installer possesses skill in the proper use of hand and power
tools, a knowledge of local building and fire codes and a familiarity with the environment behind
the wall or ceiling in which the speakers will be installed.
Quantity Description
2 Designer Series Speakers
2 Mounting Bracket
2 Barrier Cloth
2 Painting Mask
2 Metal Grille
1 Template
1 Owner’s Manual/Installation Instructions
1 Hardware Package*
Examine the contents of the package and verify that it contains the following:
Loudspeaker Side View Mounting Bracket Mounting Hole
351
361
381
91⁄2"
(241mm)
95⁄8"
(143mm)
83⁄
4"
(223mm)
109⁄16"
(268mm)
101⁄2"
(267mm)
97⁄8"
(251mm)
123⁄8"
(315mm)
123⁄8"
(315mm)
113⁄4"
(298mm)
6
3
⁄4"
(171mm)
2
5
⁄8"
(67mm)
5
5
⁄8"
(143mm)
5
3
⁄4"
(146mm)
7
3
⁄4"
(197mm)
2
7
⁄8"
(73mm)
6
11
⁄16"
(170mm)
7
1
⁄8"
(181mm)
9
9
⁄16"
(243mm)
3
1
⁄4"
(83mm)
8
9
⁄16"
(218mm)
8
1
⁄2"
(216mm)
Quantity Description
Hardware package* contents:
12 8-32 x 2" screw
2 Cable clamp –
3
⁄16"
* If the hardware package is missing any items, or is not found,
additional packages are available from Boston Acoustics.
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