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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 5
1
⁄4" (135mm) copolymer 6
1
⁄2" (165mm) copolymer 8" (200mm) DCD copolymer
Crossover Frequency 3500Hz 3400Hz 3200Hz
External Dimensions (HxW) 9
1
⁄2 x6
3
⁄4" (241 x 171mm) 10
9
⁄16 x7
3
⁄4" (268 x 197mm) 12
3
⁄8 x 9
9
⁄16" (315 x 243mm)
Mounting Hole Cutout (HxW) 8
3
⁄4 x5
3
⁄4" (223 x 146mm) 9
7
⁄8 x7
1
⁄8" (251 x 181mm) 11
3
⁄4 x 8
1
⁄2" (298 x 216mm)
Mounting Depth (from surface) 2
5
⁄
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 free-
standing 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 inappropri-
ate. 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, long-
excursion 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 manufac-
turing facilities give the Designer Series a level of performance unmatched by other in-wall speakers.