ATC SCM20ASL - Page 17

C4
Diagram 10 – 2.1 Conguration – The subwoofer
is driven by a preamplier/AV receiver with a second
pre-amplier Output or dedicated subwoofer
Output. Additional subwoofers may be daisy chained
using the subwoofer Outputs, or connected in
a stereo conguration as shown.
The recommended initial settings are
shown in Diagram 11.
The ear and brain tend to interpret distorted sound
as loudness and thus underestimate the actual level of
undistorted sound. ATC subwoofers, like all ATC
products, demonstrate much lower levels of distortion
than conventional systems of a similar size and it is
therefore advisable to begin listening at an articially low
level and carefully increase the volume. It is also possible
for the ATC systems to produce sucient sound
pressure levels for your ears themselves to become
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
high, the lter settings require adjustment, or the
positioning can be improved.
R. Sub
In Opt2
Optional 2nd Sub
Pre-Amplier
L. Pre-Out 2
L. Sub
In
R. Sub
In Opt1
L. Spk
In
R. Spk
In
R. Pre-Out 2
R. Pre-Out 1
L. Pre-Out 1
DIAGRAM 10 SUBWOOFER CONNECTED IN PARALLEL
BASS REINFORCEMENT /
EXTENSION OF STEREO
SYSTEM
65Hz -6dB 0dB 0° +
FREQUENCY
LEVEL
ADJUST FOR BEST
BALANCE
GAIN SWITCH
PHASE
ADJUST TO
FINE TUNE
POLARITY
C4 Sub Mk2 – recommended initial settings
DIAGRAM 11
30
Listening
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
Fixed rubber foot (x4)Optional screw-in metal spike (x4 supplied)
DETAIL A
SCALE 1:5
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
22
3 8
"
568
18
5
16
"
465
1
9
16
"
40
20
7
16
"
519
17
9
16
"
446
A
7
7
8
"
200
7 8
"
22
(MIN)
C4 SUB MK2
WEIGHT – 42KG / 92.6LBS
|
DIMENSIONS – SEE DIAGRAM
Limited Editi
SCM20ASL LE