Omnitronic PAS 151A, Руководство пользователя

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Operation
1) To prevent loud switching noise, first switch on the connected signal source.
2) Prior to the first switching on of the speaker system, turn down all level controls to the left stop position to
avoid a high volume at the beginning. Then switch on the speaker system with the power switch. The
POWER indicator lights up.
3) Use the LINE/MIC input selector button (model-specific) to switch the inputs to microphone or line level
according to the signal sources connected.
4) Adjust the desired volume for the speaker system with the LEVEL or VOLUME control. The LIMIT
indicator lights up when the signal level is too high. The limiter will reduce the signal level to protect the
speakers. Reduce the volume until the LED does not light anymore, or only at signal peaks.
5) It is possible to select various equalizer presets with the DSP PRESET switch according to your
application. On the top speakers select FLAT for a neutral frequency response, DJ for a low and high
frequency boost or MONITOR for a slight low and high frequency cut, yet a mid-boost. On the
subwoofers FLAT also yields a neutral frequency response, DJ lowers the cutoff frequency resulting in a
boost of the low bass range, whereas MONITOR cuts the low bass range and boosts the high bass
range.
6) If a subwoofer and a top speaker are operated in parallel via the subwoofer’s line output, switch on the
LOW CUT filter on the top speaker in order to attenuate the low frequencies and balance the efficiency
between the two speakers. 120 Hz and 90 Hz settings are available as crossover frequencies. In the
OFF setting, the filter is deactivated.
7) If multiple speaker systems are operated in parallel, phase displacement between the speakers can lead
to performance and output problems. To compensate this, the phase of each speaker can be switched
from 0° up to 180° with the
PHASE selector switch.
8) After operation, set the level controls to the left stop position, then switch off the unit with the power
switch. The power indicator goes out.
Notes
When operating the speaker system, please make sure that the loudspeakers always sound well. When
distortions can be heard, either the amplifier or the loudspeakers are overloaded. Overloads can quickly lead
to amplifier or speaker damage. In order to avoid damage, please reduce the volume immediately when
distortions can be heard. When speaker systems are destroyed by overload, the warranty becomes void.
Always check the sound pressure level with a meter in order to keep to the threshold.