4
UNDERSTANDING THE INVISIBLE SERIES INSTALLATION
INVISIBLE SERIES SPEAKER INSTALLATION DETAIL VIEW
WIRE GAUGE GUIDE
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:
FOR TECHNICAL SUPPORT
CALL (949) 492-7777
OR VISIT WWW.SONANCE.COM/PRODUCTS/INVISIBLE
16” (40.6cm) standard framing
Drywall
Stud
Fiberglass Mesh Tape
Joint Compound
Drywall Screw (wall board)
Drywall Screw (speaker)
Height Shim
Speaker Frame
SONANCE INVISIBLE SERIES SPEAKER
1/8” (3mm) maximum topping compound
buildup over active speaker area
Enclosure required for all open attic installations
WIRE RESISTANCE IN OHMS vs. LENGTH OF CABLE RUN
DISTANCE IN FEET
20 Gauge
18 Gauge
16 Gauge
14 Gauge
12 Gauge
10 Gauge
50’
1.04
.65
.41
.26
.16
.10
200’
4.14
2.61
1.63
1.03
.65
.41
300’
6.22
3.91
2.45
1.55
.97
.61
250’
5.18
3.26
2.04
1.29
.81
.51
150’
3.11
1.96
1.22
.77
.49
.31
100’
2.07
1.30
.82
.52
.32
.20
Note: IMPORTANT CONSIDERATION FOR LOCATING THE IS2, IS4, IS4SST AND ISW ON WALLS
For wall installations, locate the bottom of the Invisible Series Speaker at least 7 ft. (2.1m) up from
the floor. Placing the speaker lower on the wall will put it at risk for having picture nails or other
hanging devices driven through the diaphragm and damaging the speaker. Since the final surface finish
enables the speaker to completely disappear, it is critical to locate the speaker high enough on the
wall to protect it for the future. Resulting damage of this type is not covered by the warranty.
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