EAW MX8750 technical specifications Description, Features, Close Coupled Electronic Processingtm

TECHNICAL SPECIFICATIONS MX8750

DESCRIPTION

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.

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

-Active balanced input and outputs with XLR connectors

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.

CONFIGURATIONS

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.

SPECIFICATIONS

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
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
Slope		12dB/oct., 18dB/oct., 24dB/oct.
Number			2 per output
Frequency Resolution		1/24 octave
Level Range		+12dB/-infinite, 0.1dB increments
Limiter
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
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
Propagation Delay			1.46 msec

EASTERN ACOUSTIC WORKS

One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • Email info@eaw.com • Web http://www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# 888xxx(A) MX8750/2 PP Feb2001 • Printed In USA