3
PRODUCT DESCRIPTION
The OH-S7 and OH-T7 in-wall loudspeakers deliver outstanding performance. They incorporate
a unique waveguide tweeter that has a large mounting area to extend its response. This allows
a lower crossover point which produces a more integrated sound. The painstakingly developed
shape and profi le of this waveguide guarantees much smoother and wider response than with
post or “eye socket” mounted tweeters. In addition the tweeter is mounted on a 20-degree
angle which provides a natural “toe in” to focus the sound when the OH-S7 and OH-T7 are
used as front speakers. Alternatively the sound of the tweeters can be directed away from
the listening area, producing a more diffuse sound when used as surround speakers. Complex
high-order crossovers ensure seamless blending between woofer and tweeter and a perfectly
balanced sonic character. In production, Snell’s unique hand tuning of each crossover gives an
incredibly tight ±1dB match to the Master Reference. The OH-S7 and OH-T7 are perfect for any
application—main speakers, surround use, or background music.
/
3
/
4
-inch dome ferrofl uid-cooled tweeter provides detailed, articulate sound and wide disper-
sion.
/
Waveguide tweeter mounting for smoother high frequency response.
/
Tweeter and waveguide are angled at 20 degrees for optimum coverage of the listening area.
/
Copolymer woofer with NBR rubber surround offers smooth, natural performance.
This Package Contains:
2 Model OH-S7 or OH-T7 loudspeakers
2 White metal grilles
2 Paint
masks
1 Hole-cutting
template
Examine the contents of the package and confi rm that you have all the items.
INTRODUCTION
Note:
This manual is written with the assumption that the installer possesses skill in the proper
use of hand and power tools, a knowledge of local fi re and building codes, and a familiarity
with the environment behind the surface where the speakers will be installed.
Where to Place Your Speaker Systems
Effects of the Installation Location
The wall or ceiling into which the OH-S7 or OH-T7 is installed becomes its acoustical enclosure.
A large part of the system’s acoustical performance is dependent on that enclosure. Generally,
larger volumes will ensure full bass response. Whenever possible, avoid placing the speakers
at either end of a long column such as that created between wall studs, the footer, and the
header. Placement at the ends of such a tunnel will create a “closed-end tuned pipe” that can
adversely effect bass response. Hard surfaces behind the speaker installlation location will cause
refl ections that also will adversely effect bass response. To avoid this loosly fi ll the volume
behind the speaker with fi berglass or other sound-absorptive material.
/
Be sure the area behind the speaker mounting location is large enough - 0.5 cu. ft. or more.
/
Avoid installing the speaker near the ends of the chamber behind the mounting that is
formed by 2x4 framing. (Typically at ceiling or fl oor).
/
Fill the chamber behind the speaker mounting location with acoustically absorbent material.
Note:
A metal fi re-rated back box, the FRB68, is available for the OH-S7. In addition to provid-
ing a protected environment for the speaker, the FRB68 meets the requirements of electrical
codes throughout the country for fi re and plenum rated enclosures. Such enclosures are often
required by building codes in commercial applications and in town homes or condominiums.
OH-S7 and OH-T7.indd 3
OH-S7 and OH-T7.indd 3
1/22/08 7:17:23 PM
1/22/08 7:17:23 PM
