EAW FR-300-R User manual

Exceptionally Smooth Power Response
High Power Handling Capability 200w RMS
High Acoustic Output From Small Package
EAW's Concert Proven Construction For
Durabilit
y
and Reliabilit
y
Application
The, FR-300-R high performance loudspeaker system
is ideally suited for stage sound, high level playback, nearfield
PA and other applications requiring accurate sound
reproduction at high output levels from a compact package.
The smooth extended response and low distortion even
under demanding professional use makes this system clearly
superior to comparably sized systems.
The complex internal crossover, in conjunction with
the high power drivers, makes the system perform with
consistant accuracy under the stress of continuous
professional use. Field failures are virtually eliminated by this
combination of quality components and advanced design.
The enclosure is also designed to withstand the abuse of
portable professional use, and is of the same EAW quality
that has made us a leading supplier of systems for the
concert sound industry.
Description
The FR-300-R is a two-way system designed to
eliminate the weak midband compromises that typically
plague simple systems of this type. The use of an especially
massive compression driver and equalized third order
crossover allow for smooth transition from bass to high
frequency driver. This smooth mid-band is achieved without
compromise of bandwidth, which is exceptional for a system
of this size (45 Hz to 17,000 Hz). Construction is done with
careful attention to detail; from the cross-grain-laminated
birch cabinet material to the vinyl-coated perforated steel,
the finest available components and most sophisticated
techniques are maintained. The resulting system will audibly
out-perform competitive units while providing better
durability than any other system available.
Low Frequency Performance
Bass is provided by a 380mm (15") LF-383R driver
mounted in an optimally vented enclosure for extended
response and minimum response ripple. The
cast frame driver has a massive magnet for low distortion
and high conversion efficiency. The cone and suspension is
of the latest generation low distortion type which minimises
break-up modes under high power and eliminates the upper
bass region cone resonances that plague simpler suspension
designs.
High Frequency Horn/Driver
The FR-300-R makes use of the EAW/RCF CD2552
compression driver mounted on our HF-890A die-cast
flush front radial horn. This combination when operated
through the internal equalized network, permits a reasonably
low crossover point (1200 Hz), while maintaining power
handling and providing extended high frequency response.
This is achieved by using a large 52 mm (2") voice coil and a
strong composite diaphragm to provide high power handling
(typically 3dB more than comparable compression driver
based systems and up to 10 dB more than tweeter based
systems). The driver's magnetic circuit is large and produces
17,500 gauss. Normally this combination

would provide high power handling and high mid band
efficiency with dramatically reduced high frequency output,
but through the use of a specially developed double
suspension the mid band efficiency is suppressed, resulting
in smooth extended response with high power handling.
Frequency Dividing
Network
The crossover design of the FR-300-R system is
third order with 18 dB per octave slope. This design also
passively equalizes the crossover region to provide peak
free response. The components in the crossover are
custom made to EAW specifications including large
precision air core inductors, five percent capacitators and
resisters that cost many times more than the simpler
designs offered in competitive systems. EAW crossovers
eliminate the measurable distortion that plagues others by
designing around a dynamic headroom of three times the
systems power rating, the greatest overlead margin of any
available crossover.
FR-300-R Specifications
System Type: Two-way, vented box
Operating Range: 40 Hz to 18,000 Hz
Frequency Response
On Axis + - 3 dB: 48 Hz to 16,500 Hz
On Axis - 10 dB: 38 Hz to 18,5000 Hz
Sensitivity:
Power Handling
Continuous Sine Wave: 200 w RMS
Program: 356 w
Maximum Continuous
Output: 121 dB 1m at 200 w
Nominal Impedance: 8 ohms
Nominal Dispersion: 900 Horizontal
40 * Vertical
Enclosure Type: 0.090 cubic meter
vented box
Volume: 125 liter (4.5 cu. ft.)
Material: Cross-grain laminated
Baltic birch hardwood
Crossover Network
Slope: Third order, 18 dB/octave
Frequency: 1200 Hz
Driver Data: LF Driver HF Driver
EAW Model: LF-383R CD-2552
Diaphragm Size: 380 mm (15") 52 mm (2")
Material paper Composite
Flux density: 11,500 gauss 17,500 gauss
Voice Coil Diameter: 75mm (Y) 52mm (2")
Cabinet Dimensions: 30.5" H x 19.75"
W x 14.25 D
Cabinet Finish: Catalyzed black
polyurathane