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DIAGRAM 10
BASS REINFORCEMENT /
EXTENSION OF STEREO
SCM20ASL LE
Diagram 10 – 2. 1 Configuration – The subwoofer
L i s t e n i n g
is driven by a preamplifier/ AV receiver with a second
The ear and brain tend to interpret distorted sound
pre-amplifier Output or dedicated subwoofer
as loudness and thus underestimate the actual level of
Output. Additional subwoofers may be daisy chained
undistorted sound. ATC subwoofers, like all ATC
using the subwoofer Outputs, or connected in
products, demonstrate much lower levels of distortion
a stereo configuration as shown.
than conventional systems of a similar size and it is
The recommended initial settings are
therefore advisable to begin listening at an artificially low
shown in Diagram 11.
level and carefully increase the volume. It is also possible
for the ATC systems to produce sufficient sound
pressure levels for your ears themselves to become
30
SUBWOOFER CONNECTED IN PARALLEL
L. Spk
In
Pre-Ampli er
L. Pre-Out 1
R. Pre-Out 1
L. Pre-Out 2
R. Pre-Out 2
5
18
16 "
R. Sub
L. Sub
In Opt1
465
In
R. Sub
In Opt2
Optional 2nd Sub
C 4 S u b M k 2 – r e c o m m e n d e d i n i t i a l s e t t i n g s
LEVEL
SYSTEM
FREQUENCY
GAIN SWITCH
ADJUST FOR BEST
BALANCE
65Hz
-6dB
0dB
a source of distortion and make the sound appear
harsh. Any audible distortion indicates that either the
system or your ears are being overloaded and that
the volume level should be reduced.
When a subwoofer is successfully integrated into a
system it should become impossible to discern from
the main loudspeakers. If the subwoofer is audible
as a separate element, then it is likely the level is too
5
high, the filter settings require adjustment, or the
18
16 "
465
positioning can be improved.
C4 SUB MK2
R. Spk
In
9
1
16 "
7
20
16 "
40
519
A
PHASE
POLARITY
ADJUST TO
FINE TUNE
0°
+
9
1
16 "
7
20
16 "
40
519
7
5
7
8 "
18
16 "
200
465
5
18
16 "
465
5
7
18
16 "
20
16 "
465
519
A
7
7
8 "
200
WEIGHT – 42KG / 92.6LBS | DIMENSIONS – SEE DIAGRAM
9
1
16 "
7
20
16 "
40
519
5
18
16 "
465
9
1
16 "
7
20
16 "
40
519
A
9
1
16 "
7
40
7
8 "
A
200
DETAIL A
SCALE 1:5
A
Optional screw-in metal spike (x4 supplied)
Fixed rubber foot (x4)
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