Protective Circuit - IMG STAGELINE SUB-12AK Manual De Instrucciones

can be used to connect additional active
speaker systems, for example .
4) For power supply, use the mains cable
provided to connect the mains jack (13)
to a mains socket (230 V/ 50 Hz) .
5 Operation
1) To make sure that the initial volume is
not too high, set the control SUB (5) to
MIN before first-time operation . Then
switch on the subwoofer system with
the POWER switch (11) . The power LED
ON (10) will light up . Once the input sig-
nal being applied is high enough, the LED
SIGNAL (8) will also light up .
2) When operating the entire audio system,
use the control SUB to adjust the desired
intensity of the bass frequencies .
CAUTION Never adjust a very high
volume . Permanent high
volumes may damage your
hearing! Your ear will get
accustomed to high volumes which do
not seem to be that high after some
time . Therefore, do not further increase
a high volume after getting used to it .
Specifications
Amplifier power
Rated power
Maximum power
THD at 5 W
Frequency range
adjustable low-pass filter for the subwoofer
Max . SPL
Speaker
Input sensitivity
Input impedance
S / N ratio
High-pass filter for satellite speakers
Input jacks and output jacks
Ambient temperature
Power supply
Max . power consumption
Dimensions (W × H × D)
Weight
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may be reproduced in any form or by any means for any commercial use.
3) Use the control FREQ (4) to adjust the
highest frequency to be reproduced by
the subwoofer in such a way that the
subwoofer will ideally complement the
sound of the other speakers .
4) When the speakers are placed at different
distances to the listener, this may result
in phase cancellation (certain frequencies
will be reproduced at a lower volume) .
To compensate this effect, use the switch
PHASE (3) to reverse the phase of the
subwoofer signal . Test both positions of
the switch to find the position offering
the bass reproduction of the highest vol-
ume at the listening position . Then use
the control SUB to readjust the volume,
if required .
5) When the volume is too high, the limiter
will automatically attenuate the volume
to protect the speakers against any dam-
age . The LED LIMIT (7) will light up . If
the LED lights frequently or permanently,
turn back the control SUB accordingly;
otherwise, the limiter will respond all the
time and reduce the dynamic power .
6) After use, switch off the subwoofer sys-
tem with the POWER switch .
30 cm (12") bass speaker
400 × 475 × 480 mm
® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual
SUB-12AK
300 W
600 W
0 .2 %
35 – 260 Hz
60 – 260 Hz
123 dB
38 cm (15") bass speaker
450 mV
10 kΩ
> 64 dB
230 V/ 50 Hz
600 VA
435 × 535 × 550 mm
26 kg

6 Protective Circuit

In case of overheating or in case of a fault,
the protective circuit will separate the
speaker from the power amplifier to prevent
any damage . The LED PROTECT (9) will light
up . If this is due to overheating, switch off
the subwoofer . Wait until the subwoofer
has cooled down before operating it again .
In case of other problems, do not switch
on the subwoofer again and eliminate the
fault .
SUB-15AK
350 W
700 W
0 .1 %
30 – 260 Hz
60 – 260 Hz
125 dB
45 cm (18") bass speaker
450 mV
10 kΩ
> 77 dB
120 Hz
XLR, balanced
0 – 40 °C
230 V/ 50 Hz
650 VA
500 × 595 × 640 mm
30 kg
Subject to technical modification .
SUB-18AK
400 W
800 W
0 .076 %
25 – 260 Hz
60 – 260 Hz
127 dB
450 mV
10 kΩ
> 78 dB
230 V/ 50 Hz
700 VA
37 kg
7