EAW FR-350-R User manual

Application
The FR-350-R fulfills the need for a house sound
system capable of producing the levels required to carry vocals
and un-amplified instruments above the band, while being clearly
intelligible at high SPLs. It is physically capable of withstanding
the rigors of on-the-road abuse. The FR-350-R provides in a small
self-contained package the high-output capability associated with
large, complex component PA. systems.
Description
The FR-350-R is a three-way loudspeaker system
incorporating horn loading over the entire bandwidth for maximum
efficiency. The exceptionally wide bandwidth of 45 Hz to 20,000
Hz enables the FR-350-R to reproduce everything from the lowest
fundamentals of the bass guitar to the highest harmonic of a
cymbal crash. The audible performance of the FIR350-R benefits
from EAW's engineering advancements, including complex
third-order passive crossover, true exponential horn design, and
complete system acoustical integration, enabi ing smooth
extended response for maximum articulation and gain before
feedback. Construction is the same as EAWs touring concert
equipment, with thoroughly-braced crossgrain laminated birch
material and black polyurethane finish for roadability. This system
will audibly out-perform competitive units while providing better
durability than any other system available. All aspects of the
system have been optimized for long term reliability. From the
quality drivers to the catalyzed polyurethane finish, this unit
represents "state of the art" in road packaging.
Low Frequency Performance
Bass is provided by a 380 mm (15") LF-381 -R
driver mounted in a vented exponential bass horn providing
unsurpassed low frequency performance. The cast-frame driver has
a large magnet providing 11,500 Gauss in the gap for low
distortion and high efficiency. The rigid cone is coupled to a long,
3" diameter voice coil that exhibits high power handling
capability. The horn is made with the same painstaking attention
to detail that has made EAW the leader in professional bass horn
design.
Mid Frequency Performance
Mid frequencies are handled by a precision CD-2544
compression driver with an 18,000 Gauss flux density magnetic
structure mated to an 800 Hz flush mount exponential horn. The
driver uses a diaphragm made of a complex super alloy for
excellent power handling and smooth, extended response. This
driver combines low distortion with excellent transient response.
High Frequency Performance
The EAW CD-2060 horn/driver extends the response
to well beyond the limits of audibility. These units use a super
Duralmin diaphragm which is 18 microns thin and precision
heat treated for maximum durability and bandwidth. The edge
wound aluminum alloy voice coil is centered ' in a 16,000 Gauss
flux density magnetic circuit. The high frequency crossover in
the FR-350-R provides an 18 dB per octave slope below the
9,000 Hz crossover frequency. This combination makes driver
failures virtually impossiblewhen the system is operated within
specifications.

FR-350
Specifications
Operating range 45 to 22,000 Hz
Frequency response
On axis - 3 dB 90 and 17,000 Hz
points
On axis - 10dB 45 Hz and 22,000 Hz
points
Sensitivity
with 1w input at 107 dB SPL
1 meter
Power handling
Maximum 300 W RMS
Nominal 200 W RMS
Maximum output
with 200 w input at 130 dB SPL
1 meter
Nominal impedance 8 ohms
Nominal dispersion 90' horizontal
40* vertical
Enclosure type True exponential bass horn
with vent loading
Material All exterior surfaces cross-grain
laminated birch hardwood
Crossover network
Slope Third order, 18 dB per octave
Frequencies 900 Hz, and 9,000 Hz
Driver Data LF Driver MF Driver HF Driver
EAW model: LF-381 -R CD-2544 CD-2060
Diaphragm size/ 380 mm 44 mm 15 mm
material paper alloy aluminum
(15") (1.75") (0.6")
Type Dynamic, Dynamic, Dynamic,
cone compres- compres
sion driver sion driver
with horn
Flux density 11,000 Gauss 18,000 Gauss 17,000 Gauss
Voice coil 75 mm 44 mm 15 mm
diameter (3.0") (1.75") (0.77")
Cabinet dimensions 60.3 cm x 75.60 cm x 94.0
cm
(233/4" D x 293/4" W x 37" H)
Net weight 72.3 kg (159 lbs)
Cabinet finish Catalyzed black polyurethane
Driver mechanical Perforated steel with vinyl
protection covering
Driver electrical Individual driver fuses 4 amp;
protection 1.5 amps: I amp
Standard hardware Recessed bar handle, steel ball
corners, metal feet
Input terminals Dual 1/4 " phone jacks, and
banana connectors
Specifications subject to change without notice.