Martin Audio Installed System Digital Management Processor Engineer 418 Technical Specifications

E E n n g g i i n n e e e e r r 4 4 1 1 8 8
Installed system digital management processor
features
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4 input, 8 output freely routable signal path
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8-band fully parametric EQ on every input/output
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Highpass and lowpass crossover filters on every
output with slopes up to 24dB/octave
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Choice of Linkwitz-Riley, Butterworth or Bessel filters
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Speaker protection limiters on every output
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Unique advanced human-based Engineer algorithm
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Unique psycho-acoustical perceptual BassCreator algorithm
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Flexible event scheduler
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RS232 interface for PC programming and control
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RS485 interface for external remote control
applications
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Fixed Installation loudspeaker system management
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Automatic control of programme level and tonal quality to
compensate for variations in programme sources
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Eliminates sub frequency noise pollution
The Martin Audio Engineer is an advanced, powerful digital signal
processor designed to provide comprehensive control and
management of installed loudspeaker systems.
Incorporating a broad range of standard facilities; gain, EQ, limiting,
time delay and a 4 x 8 routing matrix, the Engineer features the
BassCreator and Engineer algorithms. These unique, innovative
functions offer solutions to some of the most commonly encountered
operational and environmental problems encountered in audio system
design.
overall dimensions

technical specifications

INPUTS Four electronically balanced
IMPEDANCE > 25K ohms
OUTPUTS Eight electronically balanced
SOURCE IMPEDANCE < 60 ohms
MIN. LOAD 600 ohms
MAX. LEVEL +20dBu
FREQUENCY RESP . + 0.1dB 8Hz - 20kHz
DYNAMIC RANGE > 110dB Unweighted
DISTORTION 0.0035% @ 1kHz 0dB
INPUT GAIN Adjustable +12dB to -inf. on 0.25dB steps
OUTPUT GAIN Adjustable +12dB to -inf. on 0.25dB steps
P P A A R R A A M M E E T T R R I I C C E E Q Q U U A A L L I I S S A A T T I I O O N N
FILTERS 8 bands per input, 8 bands per output
FILTER TYPES Bell, Lowshelf, Highshelf, Notch, Bandpass
FILTER GAIN +12dB to -45dB in 0.25dB steps
FILTER Q/BW User selectable 0.05 to 20 / 20 to 0.05
FREQUENCY RANGE 20Hz - 20kHz
H H I I G G H H A A N N D D L L O O W W P P A A S S S S F F I I L L T T E E R R S S
FILTERS One high and one lowpass for each output
FREQUENCY RANGE 20Hz - 20kHz
RESPONSE Bessel, Butterworth, Linkwitz-Riley 12/18/24 dB/oct
L L I I M M I I T T E E R R S S
LIMITER THRESHOLD +20dBu to -43dBu
ATTACK TIME 0.3 to 45ms
RELEASE TIME 4.8 to 720ms
B B A A S S S S C C R R E E A A T T O O R R A A L L G G O O R R I I T T H H M M
PLACEMENT Freely insertable on any output
FREQUENCY RANGE Virtual 30Hz to 120Hz
PARAMETERS Drive, mix level
E E N N G G I I N N E E E E R R A A L L G G O O R R I I T T H H M M
PLACEMENT Freely insertable on any input
OPERATING RANGE -45dB to +22dB
P P R R E E S S E E T T S S
PRESET TYPES System, Routing, Noise Emission, Engineer
PRESET NUMBER 32 user-accessible presets
S S E E C C U U R R I I T T Y Y
LEVELS 3 security levels with user assignable passwords
STORAGE Security settings are stored within the device
C C O O N N N N E E C C T T O O R R S S
INPUTS 12-pin Phoenix plug-in terminal block
OUTPUTS 2 x 12-pin Phoenix plug-in terminal block
RS-232 9-pin DB9 connector
RS485 RJ45 connector
POWER 3-pin IEC
POWER 60 to 250V @ 50/60Hz
CONSUMPTION 30 Watts
SIZE (W) 482mm x (H) 44mm x (D) 251mm
(W) 19ins x (H) 1.75ins (1U) x (D) 9.89ins
WEIGHT 3.35kg (7.4lbs)
Century Point, Halifax Road, Cressex Business Park,
High Wycombe, Buckinghamshire HP12 3SL, England.
Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669
E-mail: info@martin-audio.com
All information is Copyright © 2008 Martin Audio Ltd.
Due to Martin Audio's policy of continuing improvement, we reserve the
right to alter these specifications without prior notice.
www.martin-audio.com