2
OPTIONAL ACCESSORIES
Virtuoso
D
Metal Grille (part# 92290):
Metal replacement for included grilles.
Virtuoso
D
Cloth Grille (part# 92285):
Cloth-covered replacement for included
grilles.
Virtuoso
D
FlexBracket (part# 92247):
Plastic template to reserve a mounting
hole for the woofer in new construction. Designed to be used with the
RotoLock® mounting system.
Virtuoso
D
Coverplate (part# 92245):
Covers the hole made by the FlexBracket
during construction until the speaker is installed.
Virtuoso
D
Acoustic Enclosure (part# 91900):
½” MDF enclosure that
provides ideal acoustic performance and maximum reduction of sound
transmission into adjacent spaces. Designed for use only in new construction.
Virtuoso
DR
Fire-Rated Back Can (part# 91908):
Meets ASTM E 119 and UL2043
criteria for commercial installations.
Sonafill
®
In-Wall System (part# 91928):
Retrofittable acoustical
treatment for in-ceiling speakers consisting of two pillows and four tiles that
virtually eliminates noise produced by resonating drywall. Dramatically
improves midbass sound quality and reduces sound transmission into
adjacent rooms.
WOOFER PLACEMENT
Home Theater Placement
For highest output and best overall performance the Virtuoso A800DR
woofer should be placed in the front corner of the room. Place the woofer as
close as possible to the left, center and right speakers to assure seamless inte-
gration of the sound from the main speakers and the woofer.
For optimum results contact your Authorized Sonance Dealer for advice.
• The woofer should not be mounted in the same ceiling joist bay as the
left or right speakers.
Use
Illustration 1
as a guide.
2-Channel Placement
In a 2-channel system the A800DR woofer should be located on a corner of
the room, as close as possible to the left or right speaker. Corner placement
provides the highest output and best overall performance.
Use
Illustration 2
as a guide.
WIRE GAUGE
Extra resistance in the speaker wire can make speakers sound less dynamic
and reduce definition of the bass frequencies. In extreme cases, it can even
attenuate high frequencies. Also, amplifier power is wasted in wire with extra
resistance, reducing your system’s maximum output level.
To prevent degrading sound quality, the total wire resistance should be less
than 10% of the speaker’s impedance. This means that for an 8-ohm speaker,
the total resistance of the wire should be less than 0.8 ohms.
Refer to the following table when selecting the proper wire gauge for your system:
PREPARING THE INSTALLATION LOCATION
All Sonance speakers are designed to be relatively insensitive to variations in
enclosure volume. To achieve the ultimate performance from your speakers,
a section of the ceiling joist bay can be sectioned-off to form a back box.
Building such an enclosure will create a dramatic improvement in your
woofer’s bass performance and power handling.
Ideal back box volume requirements: 1.5 cu. ft. (45.5 liters)
Insulating the Ceiling Cavity
You can reduce sound transmission to adjacent rooms and further improve
woofer performance by inserting a sheet of unfaced fiberglass insulation over
the back of the woofer.
To reduce noise produced by unsupported drywall, install fiberglass
insulation in the ceiling bays adjacent to the woofer location.
Wire resistance in Ohms vs. length of cable run
Distance in Feet
50' 100' 150' 200' 250' 300'
1.04
.65
.41
.26
.16
.10
18 gauge
16 gauge
14 gauge
12 gauge
10 gauge
20 gauge
2.07
1.30
.82
.52
.32
.20
3.11
1.96
1.22
.77
.49
.31
4.14
2.61
1.63
1.03
.65
.41
5.18
3.26
2.04
1.29
.81
.51
6.22
3.91
2.45
1.55
.97
.61
I N S T R U C T I O N M A N U A L
S O N A N C E V I R T U O S O
®
D R - S E R I E S
A 8 0 0 D R 8 ” I N - C E I L I N G W O O F E R
TV
Virtuoso Woofer
Illustration 1: Virtuoso A800DR Placement for Home Theater
Virtuoso Woofer
Illustration 2: Virtuoso A800DR Placement for 2-Channel
