EAW DJ Equipment MX8750 User Manual

TECHNICAL SPECIFICATIONS MX8750  
SPECIFICATIONS  
DESCRIPTION  
Input Type Two (2): Active balanced  
Input Impedance 18k Ohms  
Max. Input Level +20dBu  
Output Type Eight (8): Active balanced  
Output Impedance 112 Ohms  
Max. Output Level +20 dBu  
The MX8750 Digital Electronic Processor is designed to optimize  
the performance of a wide range of EAW loudspeakers. It is a cost  
effective, single-rack space, processor with fully controllable  
confiuration and signal processing functions. It is designed for use  
in single or two channel modes with bi-amplified and tri-amplified  
loudspeakers along with subwoofers. The MX8750 has two input  
channels each with eight outputs that can be configured in any  
combination of input to output. Its functions include crossover  
filters, parametric equalization, shelving EQ, HP and LP filters, de-  
lay, polarity and limiting. The range and quantity of processing  
finctions assures being able to achieve optimum system perfor-  
mance. The MX8750 is controlled by using EAW software and a  
Windows PC with an RS-232 or midi interface. There is a full comple-  
ment of level and status indicatores plus individual output mutes  
for setting-up and troubleshooting systems.  
Frequency Response  
.25dB, 20Hz-20kHz  
Total Harmonic Distortion <.01% @ 1kHz, +20dBu  
Dynamic Range .110dB, 2-20kHz, unweighted  
Output Noise <-90dBu, unweighted  
EQ Filters  
EQ Filter Type Parametric Bell and Shelving (6dB/  
oct. & 12dB/oct.)  
EQ Filter Number 6 per input, 5 per output  
Q
.25 to 64  
EQ Frequency Resolution 1/24 octave  
Level Range +15/-30dB, 0.1dB increments  
Crossover Filters  
Crossover Filter Type Butterworth, Bessell,Linkwitz-Riley  
FEATURES  
- Fully controllable configurations and signal processing func-  
tions  
- Digital processing for precise settings  
- 6 bands of parametrice EQ on each input, 5 on each output  
and 7 crossover types ensure optimum performance  
- Each EQ band is selectable between full parametric or first and  
second order hi/lo shelving filters  
Slope 12dB/oct., 18dB/oct., 24dB/oct.  
Number 2 per output  
Frequency Resolution 1/24 octave  
Level Range +12dB/-infinite, 0.1dB increments  
Limiter  
- Active balanced input and outputs with XLR connectors  
Limiter Threshold -20dBu to +20 dBu, 1db increments  
Limiter Ratio 1.2;1, 1.5;1, 2;1, 3;1, 4:1, 6;1, 10:1,  
20;1, inf:1  
Limiter Attack 1 ms/dB, 100 ms/dB, 500 ms/dB  
Limiter Release 20 ms/dB, 100 ms/dB. 500 ms/dB  
CLOSE COUPLED ELECTRONIC PROCESSINGTM  
The concept of Closed Coupled Electronic ProcessingTM (CCEPTM) is  
central to the EAW design process. EAW engineers integrate elec-  
tronic signal processing into the total loudspeaker system but we  
recognize that electronics can only improve performance after all  
other electro-mechanical factors have been optimized. The MX8750  
processor is capable of providing complex asymetrical crossovers,  
delay compensation, parametric equalization, LPF ands HPF filter-  
ing, shelving EQ and limiting. While all parameters are fully ad-  
justable, the MX8750 can be configured using factory-determined  
settings for a particular loudspeaker system.  
Delay  
Input Delay 300 msec max., 1 msec increments  
Output Delay 20 msec max., 20 us increments  
Digital Processing  
A/D converters 24 Bit, 128x oversampling  
D/A Converters 24 bit, 128x oversampling  
Sample rate 48kHz  
DSP Processing 24 Bit, 56 Bit Accumulator, 200  
MIPs  
CONFIGURATIONS  
Propagation Delay 1.46 msec  
The MX8750 processor is field configured (Close CoupledTM) for a  
particular EAW loudspeaker system. If you have any questions please  
contact an authorized EAW sales agent or the factory to be certain  
that you have correctly configured the processor to your system.  
EASTERN ACOUSTIC WORKS  
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# 888xxx(A) MX8750/2 PP Feb2001 • Printed In USA  
 

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