17
Loudspeaker Setup
w w w . t e c n a r e . c o m
T Series | rev.:1.1
TANIT
2.3. TANIT, TANIT SUB and Subwoofer Extension
Sometimes an extra amount of low-frequency would be needed. TANIT System can be deployed with a Tec-
nare subwoofer. These subwoofers achieve very low-frequency response and extend the frequency response.
The ideal ratio of TANIT System loudspeakers to subwoofer elements depends on the following variables:
• Subwoofer model
•
System configuration
• Frequency content of source material
• Headroom required for low frequency
For most applications, the SW118M with a ratio of 1:1 (Number of TANIT SUB per SW118M) yield good re-
sult.
Subwoofer loudspeakers should be placed side by side. If it is not possible, the largest distance between
two adjacent acoustics centres must be half-wavelength (
it is considering a maximun phase offset of 180º
) of
upper
frequency limit
(
f
r
) of the subwoofer system to avoid one or more spurious side-lobes. It can be calculated through
this equation:
The relationship of speed of sound its frequency and wavelength is:
where
m
is wavelength (in meters),
c
is speed of sound (in
m/s
), and
f
its frequency (in
Hz
).
The maximun distance of separation permitted (
d
c
) is:
f
c
m
=
dc
f
c
r
=
•
•
1
180
360
º
º
where:
is the maximun distance of separation between sub
dc
w
woofer in meter or inch,
is the upper frequency limit o
f
r
ff subwoofer in hertz,
is the speed of sound in meters (i
c
n
nch) / second.
