Section 7 | Operation | |
7 . 1 | O p e r a t i n g L i m i t s | |
7 . 1 . 1 | O p e r a t o r R e s p o n s i b i l i t y | |
It is the responsibility of the audio system operator to operate the loudspeaker within its capabilities. This is the only way to ensure that the loudspeaker is not stressed beyond its limits to the point of damage or failure. Refer to the EAW Loudspeaker Manual for detailed Operating instructions and suggestions. NT's LED status indicators will show when the loudspeaker is operating at or beyond its maximum capabilities.
7 . 2 A d j u s t i n g t h e O u t p u t L e v e l
With a source program playing, gradually turn up the level of your signal source until the desired volume is reached or until the CLIP light flashes only occasionally, whichever comes first.
7 . 3 O p e r a t i n g I n d i c a t o r s
For the instructions in this section, refer to the accompanying Figures.
7 . 3 . 1 L i m i t e r A c t i v e
The limiting parameters set in NT's DSP are engineered to provide a high level of protection for the transducers while maximizing sonic performance and output. A Limiter Active indicator in the rear input panel illuminates when limiting is occurring. If this is flashing occasionally, meaning no more than once every 3 seconds or so, then levels are probably OK, but at maximum. If this indicator is flashing more than once every 3 seconds or so, reduce the input signal level.
7 . 3 . 2 C l i p
A Clip indicator on the rear panel illuminates if any of NT's electronics are being driven into clipping. This includes the entire signal chain from the input stage through the DSP. Clipped signals can more easily damage transducers as they can raise the average signal level significantly with a spectrum that differs significantly from the input signal.
7 . 3 . 3 I M P O R TA N T: O p e r a t o r R e s p o n s e
If either or both of the Limiter Active and Clip indicators are flashing occasionally, meaning no more than once every 3 seconds or so, then the signal level may not be excessive. However, this is a CLEAR indication the loudspeaker is being operated near or at its maximum limits. If either or both of these indicators are flashing more than once every 3 seconds or so, or are on steadily, reduce the input signal level or damage to the drivers is likely to occur.
CAUTION: Electronic limiters cannot provide absolute protection against driver failure. Thus, if limiting is occurring, it is a warning that excessive signal levels are being approached. It is NOT an indication that the loudspeaker is successfully protecting itself.
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