EAW MS100 Specifications

Design

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offer high acoustic output wide bandwidth, and accurate
reproduction in a compact package. It is ideal for recording and
production studio use or any application where critical program
evaluation is needed. Performance can be characterized by
referencly flat response over the entire audio bandwidth over very
wide frontal angles. This impressive performance is the result of an
extensive engineering program to design and produce a system
capable of upgrading the acoustical monitoring of program signal
and to take advantage of the improved recording and
broadcasting technologies employed in the eighties.

The MS, 100 Reference Monitor System is designed to

Description

incorporating an auxiliary bass radiator port substitute. The front
baffle is designed to minimize transmission of re- radiated high
frequency information and to provide halfsphere radiation
throughout the mid and high frequency band, maintaining uniform
polar response. The attention to detail in the MS -100's construction
ensures reference performance and unit to unit consistency.

The MS-100 Reference Monitor is a three way system

Low Frequency Data

poly-laminated cone which improves rigidity and lowers distortion
by decreasing bell -mode resonan ces. The driver is housed in a 70
litre enclosure with a 300 mm. (12") auxiliary bass radiator
acoustically coupled to it for improved low frequency bandwidth
and elimination of internal cabinet high-frequency information

emanating from a vent

Mid Frequency Data

improved articulation and lower distortion. It utilizes a massive
magnet assembly and an unusually long voice coil for high power
handling and low distortion, even at full monitoring levels. It is
housed in a separate 2.6 litre sealed enclosure. The driver is
recessed flush with the baffle for proper half sphere radiation.

The 250mm. (10") bass driver utilizes a unique

The 110 mm. (41/2") mid driver is also polylaminated for

High Frequency Data

Our 26mm. (I") dome tweeter exhibits exceptionally
high power handling capacity as a result of precise thermal design
Magnetic damping fluid serves as a heat sink for the voice coil, as i
also eliminates cavity resonances for a smoother response. Th
massive magnet assembly utilizes special machining for precise
focusing of all energy at the voice coil, achieving over 18,000 Gaus
in the gap. This results in an even more extended high frequency
response. Excellent dispersions is derived from careful contourin
of dome cross-section. The increased thermal capacity in addition
to uniformly smooth and well-dispersed response results in
tweeter of exceptional reliability and sonic quality.

The Crossover

In addition to using the finest drivers, we've designed
the most sophisticated crossover available in a compact monitor.
Design parameters were mathematically calculated, and then
continuously adjusted during an extensive listening evaluation. The
crossover was then subjected to precision acoustic measurement
The resulting network is based on a third order (1 8dB per octave)
filter that achieves precise phase matching, and is specially
compensated for the woofer, mid range, and tweeter responses and
their interactions, thus allowing for imperceptible transition in the
crossover regions.

All capacitors are custom manufactured to the

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highest standards. They exhibit exceptionally low loss,
extended frequency response, excellent surge capacity, and
very long life. The inductors are air core type, hand wound
in house, of unusually heavy wire for minimal loss and
exceptionally high power handling. Each component in the
crossover is matched to within 3% of the original design
values.

This crossover, the heart of the MS-100, is
unexcelled in quality and craftsmanship; indicative of the
attention to detail during the design and manufacturing of
this system. We have also provided front baffel level
controls for the mid and high frequencies which allow for
maximum flexibility in adjustment of the monitor for any of
the possible acoustic environments in which it might be
used.

The Cabinet and Grill

The cabinet which houses the MS-100 is
constructed of a special high-density material, vith walnut
veneers on both sides to prevent warpage and to reduce
resonances. This material, combined with a network of
internal bracing and acoustic damping materials, results in a
virtually resonance free enclosure. The front baffel is routed

out to allow the drivers to sit flush. Then, a specially
developed foam is placed on the baffel to eliminate
reradiated high frequency energy. The result is much
smoother response than otherwise attainable. The grill frame
is made
of rounded pieces which prevent reflections back onto the
baffel. As a finishing touch, the acoustically transparent
black grill complements the hand rubbed, oiled walnut
finish.

Our Philosophy

At EASTERN ACOUSTIC WORKS, we're prou
of the state of the art products which we've designed a n
manufactured. Our attention to detail, combined with th
very best technical skills available, allow us to manufactur
products which set new industry standards, are reasonable i
price and which will last for a long time, even under th
most demanding conditions. Innovations which are usefu

Nominal response 32 Hz to 22,000 Hz ±3dB
Polar response -3dB -6dB

300 12 K Hz 17 K Hz

600 8 K Hz 10 K Hz

Sensitivity 91 dB for 1 watt at 1 meter
Power Handling 75 watts RMS

Sine wave

Program 150 watts
Nominal impedance 8 ohms
Crossover frequencies 450 Hz and 3000 Hz

Driver specifications HF driver MF driver LF driver

Nominal diameter 250mm (10"), 1 14mm (41/2"),26mm (1

Type Polymeric Cone,Polymeric Cone,Soft Dome
Enclosure type Vented/ABR
Enclosure Volume 70 Litres
Dimensions: 20"w x 31"h x 10"d