EAW MX100, MX200i, MX300i, MX800i Technical Specifications

Acoustical Performance Partnership Eastern Acoustic Works Group E Summary Specifications

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

Acoustical Performance Partnership Eastern Acoustic Works Group E Summary Specifications

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

AUDIO PERFORMANCE

Dynamic Range 115 dB typical

(≥108 dBu)

THD+N (0 dBu 20-Hz 20 kHz)

0.03% typical (≤0.08%)

INPUT

Connectors Female XLR (Locking)
Type Electronically Balanced

Differential

Differential Input >10 kΩ
Common-Mode
Input 30 kΩ
Input Overload (20 Hz - 20 kHz)

+18 dBu

OUTPUT

Connectors Male XLR
Type Single-Ended
Impedance 10 Ω
Max Voltage +18 dBu
Minimum
Resistive Load 300 Ω
Maximum
Capacitive Load 22 nF (Outputs are

stable with any
capacitive load.)

Offset Voltage ±1.5 mV

(±10 mV limit)

Output Noise (20 Hz - 20 kHz,
RS=600 Ω)

MX200i HF
MX300i HF
MX800i HF -97 dBu Typical

(≤ 94 dBu)

MX200i LF
MX300i LF/SB
MX800i MF/LF/SB -100 dBu Typical

(≤ 97 dBu)

ELECTRICAL/
ENVIRONMENTAL

Dimensions 19" W x 3.5" H x 10" D
Line Input Power ≤30 W

Line Voltage Requirements

115 VAC Setting 90 -135 VAC, 50-60 Hz
230 VAC Setting 195 - 270 VAC, 50-60 Hz
Line Input/
Fuse Holder IEC 320 socket with

5 x 20 mm fuseholder

Operating
Temperature 0° - 50° Celsius
Accessories
Included UL/CSA Line Cord,

Spare Line Fuse (in
Fuse Holder)

MX200i, MX300i, MX800i
HF SECTION DATA

HF Equalization Shelving EQ Circuit,

Boost Set Via Internal
Multiposition Jumper,
MX300i/MX800i Switch
Defeats Circuit

Highpass
Filter Type Two Cascaded

Second-Order
Sections, Variable F

0

Set Via Internal
Resistor SIP

Lowpass Filter Type Third-Order

Butterworth

Limiter Type RMS Above Threshold

Infinite Compressor
Limiter Time
Constant 39 msec
Limiter Threshold Set via Internal Master

Threshold Control & HF

Threshold Resistor
Pass Band Gain Range of ± 10 dB Set

via Internal HF Gain

Resistors

MX800i MF SECTION DATA

Highpass
Filter Type Two Cascaded

Second-Order

Sections, Variable F

0

Set via Internal

Resistor SIP
Lowpass Filter Type Two Cascaded Second-

Order Sections,

Variable Fº Set via

Internal Resistor SIP
Phase

Network Type,

MF/HF 1st Order Allpass
Phase Adjustment 0° - 180° (Fº Set via

Internal MF Phase

Resistor)
Limiter Type RMS Above Threshold

Infinite Compressor
Limiter
Time Constant 85 msec

Limter Threshold Set via Internal Master

Threshold Control & MF

Threshold Resistor
Pass Band Gain Range of ± 10 dB Set

via Internal MF Gain

Resistors

MX200i LF SECTION DATA

Lowpass Filter Type Two Cascaded Second-

Order Sections,

Variable Fº Set via

Internal Resistor SIP
Phase
Network Type 1st Order Allpass
Phase Adjustment,
LF/HF 0° - 180° (Fº Set via

Internal LF Phase

Resistor)
Limiter Type RMS Above Threshold

Infinite Compressor
Limiter
Time Constant 182 msec

Limter Threshold Set via Internal Master

Threshold Control & LF

Threshold Resistor
Pass Band Gain Range of ± 10 dB Set

via Internal LF Gain

Resistors
LF Equalization Underdamped 2nd

Order Sallen-Key

Highpass Filter,

Variable Fº & Q Set via

Internal PCB’s

Dynamic LF
Excursion Control

Sliding 2nd Order
Highpass Filter
Controlled by RMS
Level in LF Passband,
Engages when RMS
Level is within 10 dB

of LF RMS Threshold
Fixed LF
Excursion Control 2nd Order

Butterworth Highpass

Filter, Variable Fº Set

via Internal PCB’s

MX300i, MX800i LF
SECTION DATA

All Sub Modes

Lowpass Filter Type Two Cascaded Second-

Order Sections,

Variable Fº Set via

Internal Resistor SIP
Phase Network
Type 1st Order Allpass
Phase Adjustment,
LF/MF 0° - 180° (Fº Set via

Internal LF Phase

Resistor)
Limiter Type RMS Above Threshold

Infinite Compressor
Limiter Time
Constant 85 msec
Limter Threshold Set via Internal Master

Threshold Control & LF

Threshold Resistor
Pass Band Gain Range of ± 10 dB Set

Via Internal LF Gain

Resistors

SUB ADJ Mode

Highpass
Filter Type Two Cascaded

Second-Order

Sections, Variable F

º

Set via Internal

Resistor SIP

SUB DIST Mode

Fixed LF

Excursion Control 2nd Order

Butterworth Highpass

Filter, Variable Fº Set

Via Internal PCB’s
Dynamic LF
Excursion Control Sliding 2nd Order

Highpass Filter

Controlled by RMS

Level in SUB

Passband, Engages

when RMS Level is

within 10 dB of SUB

RMS Threshold

SUB OFF Mode

Fixed LF
Excursion Control Two Cascaded 2nd

Order Highpass

Filters, Variable Fº Set

via Internal PCB’s
Dynamic
LF Equalization Underdamped Sliding

2nd Order Highpass

Filter Controlled by

RMS Level in SUB

Passband, Engages

when RMS Level is

within 10 dB of SUB

RMS Threshold

MX300i, MX800i, SUB
SECTION DATA

SUB Mono Front Panel Button

Sums Both SUB Bands,
Each Attenuated 3 dB

SUB Boost Front Panel Button

Increased Passband
Gain 6 dB

Polarity Front Panel Switch

Reverses Polarity When

Depressed
Lowpass
Filter Type Two Cascaded

Second-Order

Sections, Variable F

º

Set via Internal

Resistor SIP
Phase
Network Type 1st Order Allpass
Phase Adjustment,
LF/SUB 0° - 180° (Fº Set via

Internal SUB Phase

Resistor)
Limiter Type RMS Above Threshold

Infinite Compressor
Limiter
Time Constant 182 msec
Limter Threshold Set via Internal Master

Threshold Control &

SUB Threshold Resistor
Pass Band Gain Range of ± 10 dB Set

via Internal LF Gain

Resistors
Dynamic SUB
Excursion Control Sliding 2nd Order

Highpass Filter

Controlled by RMS

Level in SUB

Passband, Engages

when RMS Level is

within 10 dB of SUB

RMS Threshold

SUB Equalization

Underdamped 2nd

Order Sallen-Key

Highpass Filter,

Variable Fº & Q Set

via Internal PCB’s

MX100 Technical Specifications

ELECTRICAL/
ENVIRONMENTAL

Dimensions 19” W x 1.75”
H x 6.25” D
Line Input Power 5 Watts

Line Voltage Requirements

120 VAC Setting 103-127 VAC, 50-60 Hz
240 VAC Setting 206-255 VAC, 50-60 Hz
Line Input !EC 320 Block
Fuse Holder Tamper-proof Screw

Release
Fuse Type T1A
Operating
Temperature 0º - 50° Celsius
Accessories
Included UL/CSA Line Cord

CROSSOVER FILTER TYPE

HF High Pass 4th Order Linkwitz-

Riley, Variable F

0

LF Low Pass 4th Order Linkwitz-

Riley, Variable F

0

CROSSOVER CUTOFF
FREQUENCIES

HF High Pass 60 Hz - 2 kHz
LF Low Pass 60 Hz - 2 kHz

SYSTEM HIGHPASS
AND LOWPASS

LF High Pass 4th Order, Variable Q,

Variable F

0

HF Low Pass 4TH Order

Butterworth, -3 dB @

35.2 kHz

PASS BAND GAIN

HF/LF -10 dB to +10 dB

MX200i, MX300i, MX800i Technical Specifications

AUDIO PERFORMANCE

Dynamic Range Nominal 115 dB,

> 105 dB

THD+N (0 dBu
20 Hz – 20 kHz) .003% (≤.005%)

INPUT

Connectors Female XLR (Locking)
Type Electronically Balanced

Differential

Differential 15 kΩ Input

Impedance

Unbalanced 7.5 kΩ Input

Impedance

Input Overload

(20 Hz – 20 kHz) 20 dBU

OUTPUT

Connectors Male XLR (Locking)
Type Single-Ended
Impedance 47 Ω
Max Voltage 20 dBU
Minimum
Resistive Load 1 kΩ
Maximum
Capacitive Load 10 nF (Outputs are

stable with any
capacitive load.)

Output Noise (20 Hz – 20 kHz, Rs =

600 Ω, All Bands Unity
Gain)

LF/HF 100 dB (typical)

OPERATING MODES

(Note: Mode is set internally)

Stereo Low Mode

HF Outputs 2 Male XLR’s
LF Outputs 3 Male XLR’s

(1 Left Channel,
2 Right Channel)

Mono Low Mode

HF Outputs 2 Male XLR’s
Summed Mono LF 2 Male XLR’s
Summed Mono
Full Range 1 Male XLR

Acoustical Performance Partnership Eastern Acoustic Works Group E Summary Specifications

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

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

EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# MXSeries/4p/5/21/97 • Printed In USA

Group E Performance Specifications

Close Coupled Processors

Specifications for Close Coupled Electronic Processors: MX100, MX200i, MX300i, MX800i

EASTERN ACOUSTIC WORKS

CONFIGURATIONS

Each MX Series processor is configured (Close Coupled) to a particular
EAW loudspeaker system or combination of systems. When ordering
MX Series processors, it is recommended that you contact an autho­rized EAW sales agent, or the factory itself, to be sure that you order
the correctly configured processor for your sound system or project.

MX200i, MX300i and MX800i processors can be reconfigured in the
field, but this procedure is best performed by an authorized EAW
service center or EAW factory service.

SERVICE DEPARTMENT

For warranty repairs, replacement parts or other service needs, contact the
EAW Service department at 800/992-5013 or 508/234-6158 during
normal business hours. The Service fax number is 508/234-3776.

DESCRIPTIONS

MX100

The MX100 CCEP™ is a two-channel, two-way electronic subwoofer
crossover. The low frequency output is configurable either as a summed
monaural or stereo output. Special configurations are also available to
biamp two-way fullrange speaker systems.

MX200i

The MX200i CCEP™ is a two-channel, two-way electronic crossover,
supplied configured for use with specific EAW loudspeaker systems or
combinations of systems. Each frequency band output features overload
protection circuitry.

MX300i

The MX300i CCEP™ is a two-channel, three-way electronic crossover,
supplied configured for use with specific EAW loudspeaker systems or
combinations of systems. Each frequency band output features overload
protection circuitry.

MX800i

The MX800i CCEP™ two-channel, four-way electronic crossover sup­plied configured for use with specific EAW loudspeaker systems or
combinations of systems. Each frequency band output features overload
protection circuitry.

CLOSE COUPLED PROCESSING

The concept of Close Coupled electronic processing (CCEP™) is central
to the EAW design process. EAW engineers integrate electronic signal
processing into the total loudspeaker system, but we recognize that
electronics can only improve performance after all other electro­mechanical factors have been optimized. MX Series processors incorpo­rate functions such as complex asymmetrical crossover filters, phase
compensation, low frequency excursion control, amplifier clipping
protection limiting and high frequency horn equalization. All of these
parameters are configured for a particular loudspeaker system in an
iterative design process using EAW’s rapid data acquisition facility and
in-house multi-platform computer network.

when the two signals being summed are in
phase with each other. The amplitude responses
of the filter and loudspeaker may each be
correct. But when they are combined, phase
errors can easily be introduced, so that the
overall response is not flat. Definition and intel­ligibility are lost. Attempts to correct crossover­related phase errors through equalization may
disguise the problem, but cannot cure it. The
result may produce acceptable measurements
with low resolution test equipment such as 1/
3 octave analyzers. More detailed measure­ments as well as simple listening tests confirm
that attempts to compensate for phase errors
with equalization produce an inconsistent sys­tem with audible irregularities.

ASYMMETRICAL FILTERS

The MX200i and MX300i CCEPs use multiple
second order filters to create the fourth order
filters on each frequency band. These second
order filters are independently adjustable. These
adjustments, performed with the aid of inte­grated test data acquisition and computer
modelling software, are a key element in the
close coupling of the crossover to a particular
speaker system.

MX800i

The MX800i CCEP two-channel, four-way
electronic crossover is designed for fixed instal­lations and touring sound systems. It is supplied
configured for use with specific EAW systems.
This ensures optimum system performance un­der all conditions, without the burden of “set­ting up.” The unit is compact, robust and very
reliable, yet simple to service should the need
arise.

CLOSE COUPLED ELECTRONIC PROCESSOR

MX800i

SUBWOOFER MODE

OFF DIST

SUB

MONO

SUB

+ 6dB

HF EQ
OUT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

CHANNEL 2

SUB LOW MID

ADJ

SUB Ø
180°

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

CHANNEL 1

MID

POWER

LOW SUB

MUTE

SIGNAL

-40dB -6dB LIMIT

HIGH

MUTE MUTE MUTE

EASTERN ACOUSTIC WORKS

SIGNAL

-40dB -6dB LIMIT

HIGH

MUTE MUTE MUTE MUTE

UNCAL UNCAL UNCAL UNCAL UNCAL UNCAL UNCAL UNCAL

-6 0 -6 0-6 0-6 0-6 0 -6 0 -6 0 -6 0

OVERLOAD PROTECTION

Each frequency band has an independent true­RMS above threshold infinite compressor to
reduce gain momentarily whenever the preset
output limit is approached.

LOW FREQUENCY CONTROL

The MX800i’s lowest operating output band
incorporates a low frequency control circuit
that provides stepdown alignment equaliza­tion along with high pass filtering to prevent
operation below system cutoff. This equalized
filter is controlled to provide maximally extended
distortion-free low frequency response at all
power levels.

SUB-BASS MODE

Front panel switches select “OFF”, “ADJacent”
and DIStant” sub-bass modes. This maintains
the correct sound balance and source localiza­tion regardless of whether or not you use
subwoofers, or whether the subwoofer sys­tems are mounted adjacent to the main speaker

MX200i, MX300i, MX800i

MX200i, MX300i

The MX200i CCEP is a two-channel, two-way and
the MX300i CCEP™ is a two-channel, three-way
electronic crossover. Both are designed for use in
fixed installations and touring sound systems and
are supplied configured for use with specific EAW
loudspeaker systems or combinations of
subwoofers and full range systems. This removes
the burden of “setting up” from the end user and
assures optimum system performance under all
conditions. CCEPs are compact, robust and very
reliable, yet simple to service should the
need arise.

HIGH

CLOSE COUPLED ELECTRONIC PROCESSOR

MX200i

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

CHANNEL 2

LOW

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

CHANNEL 1

POWER

LOW

MUTE MUTE

EASTERN ACOUSTIC WORKS

HIGH

MUTE MUTE

UNCAL UNCAL

-10 0 -10 0

CLOSE COUPLED ELECTRONIC PROCESSOR

MX300i

SUBWOOFER MODE

ADJ OFF DIST

SUB Ø
180°

SUB
MONO

SUB
+ 6dB

HF EQ
OUT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

SIGNAL

-40dB -6dB LIMIT

CHANNEL 2CHANNEL 1

HIGHPOWER LOW SUB SUB LOW HIGH

MUTE MUTE MUTE MUTE MUTE MUTE

EASTERN ACOUSTIC WORKS

OVERLOAD PROTECTION

Each frequency band has its own overload
protection circuitry. A true-RMS above thresh­old infinite compressor momentarily reduces
gain whenever the preset output limit is ap­proached. This is normally set to prevent the
power amplifiers from being driven into clip­ping, but may also be intentionally set lower to
protect particularly delicate drivers or to limit
the maximum long term output of the system.

LOW FREQUENCY CONTROL

The MX300i’s low frequency output incorpo­rates a low frequency control circuit to provide
both stepdown alignment equalization and
high pass filtering to prevent operation below
system cutoff. This equalized filter is controlled
to provide maximally extended distortion free
low frequency response at all power levels.
The threshold for this circuit is pre-set at the
factory.

SUB-BASS MODE

The MX300i’s front panel switchable sub-bass
modes - “OFF”, “ADJacent” and “DIStant” ­enable the user to maintain the correct sound
balance and source localization with and with­out subwoofers and whether the subwoofers,
if used, are adjacent to the main speaker stacks
or located remotely. This is particularly valu­able when sub-bass systems are mounted at
ground level and the rest of the system is
flown.

PHASE COMPENSATION

Each MX200i or MX300i configuration incor­porates phase correction circuitry, tailored to
the specific systems for which it is designed.
This technique compensates for the phase
response of the drivers and their relative place­ment in the enclosure to present the listener
with accurate, phase coherent sound. At the
crossover points of any multi-way system, the
sum of the upper and lower output bands
should be flat: This state of affairs occurs only

stacks or located remotely. This function is
particularly useful when subwoofers are
mounted at ground level and the rest of the
system is “flown.”

PHASE COMPENSATION

At the crossover points of any multi-way sys­tem, the sum of the upper and lower output
bands should be flat so as not to cause any
peaks or dips in the overall system response.
However, this state of affairs occurs only when
the two signals being summed are in phase
with each other.

The amplitude responses of the filter and loud­speaker may each be correct. But when they
are combined, phase errors are almost certain
to occur so that the overall response is not flat.
Many manufacturers use equalization in an
attempt to combat this shortcoming but
equalization is only an attempt to hide the
problem; it doesn’t cure it.

The MX800i CCEP™ incorporates phase cor­rection circuitry, tailored to the specific system
for which it is configured. This circuit compen­sates for the phase response of the drivers and
their relative placement in the enclosure to
present the listener with accurate, phase co­herent sound. Without phase correction, the
high frequency drivers in a multi-way system
tend to lag behind low frequency drivers,
causing a significant loss of definition and
intelligibility.

ASYMMETRICAL FILTERS

The MX800i CCEP™ incorporates independent
internal settings for each of the six filters on
each channel. Using each filter’s individual
settings, we are able to independently adjust
both pairs of second order filters used to create
the ultimate fourth order slope. This asym­metrical filter design is a key element in the
close coupling of the crossover to a particular
speaker system to compensate for the acousti­cal characteristics. of individual elements.

• Front Panel Output Adjustments - up to 6 dB
level reduction on each band, with auto­matic tracking of protection thresholds.

• Quick Configuration Programming - all closely
coupled system-specific functions are located
on an internal plug-in PC board for easy re­configuration.

• Improved Output Line Drive Capability - 10Ω
output impendance: no need to adjust out­put balances.

• Meets UL, CSA & European Safety Standards.

• Full Transient Protection - for safe, quiet turn­ons and -offs.

• Enhanced Subwoofer Operating Modes ­allows true three-way operation with or with­out subwoofers.

• Front Panel Indicators - watch band has LED
indicators for signal presence, maximum safe
output level and output level calibration.

• Rugged Mechanical Construction - built in
the USA with heavy gauge materials for true
reliability on the road.