Nexo NX241, User Manual

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GENERAL DESCRIPTION
USER MANUAL LOAD1_80
DATE: 30/08/00 12:48
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ACTIVE 3 WAY plus AUX SUB on INPUT B
L R SUB LF MF HF
4 3 2 1 2 1
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STEREO ACTIVE 2 WAY
L R LF L LF R HF L HF R
4 3 2 1 2 1
Equalisation & Filtering
Subsonic and VHF filtering
Low and high-pass filters are used to filter out frequency components that could possibly
degrade the performance of the TDcontroller and amplifiers. The filters are optimised to work in
conjunction with overall system response.
The high pass filters are also extremely important as they optimise excursion at very low
frequency which is a very important safety factor. (So do not use set-ups which are not designed
for the cabinet you are using)
Equalising acoustical response
This equaliser section achieves the correction required to obtain a flat system response, as the
cabinets are acoustically designed for maximum efficiency on the whole frequency range. Active
rather than passive attenuation allows the lowering of amplifier voltages for a given output SPL and
therefore increases the maximum SPL achievable with the same amplifier.
Active equalisation also extends system bandpass especially at low frequencies where acoustical
performance is limited by cabinet size.
Crossover section
Crossover between different bands is tuned for every set-up of every cabinet. The crossover is
designed to ensure the best phase alignment possible over the crossover overlap.