The Architectural Loudspeaker:
Overall Cut-Out (Diameter x Depth)
K-K-
K-8SWd
8" In-Ceiling / Wall
- Frameless Subwoofer
9-7/8" diameter
8-5/8" x 3-7/8"
Model
Congratulations!
You have purchased a high quality subwoofer.
When matched to comparable electronic equipment, expect years
of high fidelity sound. We are constantly striving to provide the very
best value in quality audio products.
The following manual is designed to give you, the installer or owner, basic
information as to the speaker’s installation and operation. It is beyond
the scope of this manual to go into all the details that must be taken into
consideration in a sophisticated high fidelity system. When installing
the wiring and speakers it is important to adhere to all local codes
and regulations. Consulting a professional can help to maximize your
system’s performance.
If you have any questions regarding this speaker which are not answered
by this manual, contact your local dealer for assistance. For the most
current information please visit www.preference-audio.com.
SHIPPING DAMAGE
Each speaker is thoroughly tested before it leaves the factory. However,
in shipment, accidents may occur. Please inspect your speakers carefully
when you receive them to ensure there is no damage. If there is, please
notify your supplier immediately. If you received your speakers by public
transportation, report the damage at once to the shipping company.
GENERAL DESCRIPTION
The K-8SWd subwoofer is a passive speaker that utilizes a specially-
designed shallow cone made from a blend of woven Kevlar & Glass-fiber.
It uses a linear long-throw motor to achieve high efficiency and high
output in a compact design that fits in walls utilizing standard “2x4”
construction. The term “passive” means that it does not contain its own
amplifier. It must be driven from a dedicated amplifier or connected
in parallel with a primary listening speaker using a passive crossover,
(not supplied). The woofer is optimized for maximum output and low
frequency extension in our frameless mounting system. The K-8SWd is
designed to be used individually or in multiples depending on room size
and listening needs. For aesthetic compatibility, the subwoofer is shipped
with the same round and square micro-perforated grilles that are used on
our frameless in-wall/ceiling speakers.
GETTING STARTED
The remaining portion of this manual is split into two sections. The first
section provides basic step-by-step installation instructions. The second
section provides an overview of some important elements of subwoofer
placement, connection, amplification, configuration, and painting. We
recommend that you familiarize yourself with both these sections before
you begin the installation.
If you will be painting your grilles then leave them in their plastic bags
until needed to protect them from dust and oil contamination.
INSTALLATION
MINIMUM TOOLS REQUIRED
#2 Phillips Head Screw Driver or Drill-Driver w/#2 Phillips bit
Wire Cutter / Stripper
Other Possible Tools
Tape Measure, Pencil, Ladder, Drywall Saw, Stud-Finder,
Flashlight, Tape, etc.
frameless grille
PROCEDURE
If pre-construction brackets were used, skip to step 5
1.
Determine subwoofer location and check for obstructions
2.
Mark and cut hole for subwoofer
3.
Check speaker fit
4.
Run Wire
5.
Prepare the cavity for the subwoofer
6.
Prepare wire for connection and connect it to the sub
7.
Insert subwoofer into hole and tighten toggles
8.
Install grille, test and adjust system
K-8SWd
INSTALLATION GUIDE
For 8" K-8SWd In-Ceiling / Wall Subwoofer
1.
If the subwoofer locations have not yet been established then do so now.
The SUBWOOFER TIPS & TECHNIQUES section of this manual provides
information useful for optimizing the placement.
Assess the ceiling or wall area for possible concealed obstructions such
as wiring, plumbing, heating ducts, etc. For the ceiling, this is best done
through an attic crawl space if available. Absence of a crawl space will
require greater study of observable clues and may possibly require the use
of inspection holes and inspection tools (camera, mirror, flashlight, etc.). Use
a “stud finder” to locate the positions of the joists or studs.
The cardboard speaker template can be used as a visual aid for aesthetically
optimizing the placement. Use a push-tack or tape to temporarily hold it
into place.
We recommend that the edge of the speaker holes be at least ¾" (19mm)
away from joists or studs where there is a seam in the sheetrock to ensure,
that the integrity of the sheetrock is maintained.
NOTE: Infinite baffle subwoofers should not share the same internal wall
space as other infinite baffle speakers. While it is ok for two subwoofers
to share the same cavity, other speakers should be isolated with blocking
or a large region of dense acoustic material. The same applies to confined
ceiling-spaces. The exception is large attic spaces where the volume of air is
large and there will be no cross-coupling between speakers.
It is also recommended that you avoid mounting subwoofers immediately
adjacent to in-ceiling lighting. This will help to reduce unwanted vibrations.
