It is likely that a subwoofer will be used in one of two different scenarios: either as Bass Reinforcement/Extension in a Stereo System or as a discrete
channel in a Multichannel Surround/Immersive Audio system.
Typically, a full-range stereo signal is driven into both Left and Right subwoofer Inputs. The subwoofer Outputs connect to and drive the main
monitors. Alternatively, the Studio Control Subwoofer and main monitors can be driven independently from a suitable monitor controller. Example
systems are shown in Diagrams 7, 8 and 9. All subwoofers can be controlled using the method described in section 5. All panel settings should be
set independently for each subwoofer.
All
ATC
loudspeakers deliver significant low frequency output, more so with the larger monitors in the range, therefore there will always be some
degree of acoustic overlap between the subwoofer and stereo loudspeaker in this configuration. Applying a high pass filter to the main monitors
will introduce phase shift in the main monitors and should be avoided where possible. Good results can be achieved through experimentation with
the subwoofer Level, Frequency and Phase adjustment.
Diagram 7 – Typical Configuration – Stereo playback (Mono Sub). A monitor controller or preamplifier output is connected to the L and R Inputs
of the subwoofer. The subwoofer L and R Outputs are connected to the Input of the L and R main monitors. In this configuration the Gain switch
is normally set to 0dB.
Diagram 8 – Typical Configuration – Stereo playback (Stereo Subs). A monitor controller or preamplifier output is connected to a single Input on
each subwoofer. The corresponding Output of each subwoofer is connected to the Input of the main monitor on that channel. In this configuration,
the Gain switch is normally set to 0dB. Note that it is also possible to connect the monitor controller output to both Left and Right channel Inputs
on the subwoofer using a Y-Splitter cable. If connected in this way the “spare” output can be used to connect further subwoofers.
T y p i c a l S y s t e m C o n f i g u r a t i o n s a n d R e c o m m e n d a t i o n s
B a s s R e i n f o r c e m e n t / B a s s E x t e n s i o n o f a S t e r e o S y s t e m
6.0
6.1
SECTION SIX
DIA
G
R
A
M
7
DIA
G
R
A
M
8
L
R
L
R
Monitor
Controller /
Preamplifier
Monitor
Controller /
Preamplifier
L
R
L
R
