2
FRX
-940 High-
Output, Coaxial Speaker System
FR10-2B SPECIFICATION GRAPHICS
FRX-940 High-Output, Coaxial Speaker System
they will hold up, not only through the most
rigorous of power tests, but also through con-
tinued use in arduous, real-life conditions. The
EIA Loudspeaker Power Rating Full Range
(EIA RS-426-A 1980) uses a noise spectrum
which mimics typical music and tests the ther-
mal and mechanical capabilities of the com-
ponents. Electro-Voice will support relevant
additional standards as they become available.
Extreme, in-house power tests, which push the
performance boundaries of the system, are also
performed and passed to ensure years of
trouble-free service.
Specifically, the FRX-940 passes EIA RS-426-A
1980 with the following values:
R
SR
= (1.15 x R
E
) = 6.9 ohms
P
E(MAX)
= 400 watts
Test voltage = 52.5 volts rms,
105 volts peak
The "peak" power-handling capacity of a
woofer is determined by the peak test voltage
amount. For the FRX-940 a 105-volt peak test
voltage translates into a 1,600-watt short-term-
peak power-handling capacity. This is the
equivalent of four times the "average" power-
handling capacity, and is a peak that can be
sustained for only a few milliseconds. How-
ever, this sort of short duration peak is very
typical in speech and music. Provided the
amplifier can reproduce the signal accurately,
without clipping, the system will also perform
accurately and reliably, even at these levels.
Suspending the FRX-940
The quick-release, aircraft-rated heavy-duty
L-track-type hardware design allows arrays
of loudspeakers to be assembled very
quickly, and offers such flexibility in the
vertical angling of cabinets that pull-up
points are usually unnecessary. However,
if the need for pull-up points is required,
two 3/8-16 threaded nuts are located on the
rear of enclosure for this purpose.
Additional flying hardware is installed on
the bottom of the enclosure for arraying pur-
poses. However, a maximum of two FRX
enclosures (304 lb max.) can be "daisy-
chained" together, allowing the construction
of vertical arrays. If longer arrays are re-
quired, or for loads exceeding the 304-lb
maximum load limit, provision must be
made to independently suspend each enclo-
sure.
Fittings are not included in the system pack-
aging. Contact the following to purchase:
Ancra International, 3300 Turfway Rd.,
Erlanger, KY 41018, 800/233-5138 or
Sound Manufacturing, 3336 Primera Ave.,
Hollywood, CA 90068-1550, 231/850-5042
Suspending an object is potentially danger-
ous and should only be attemped by indi-
viduals who have a thorough knowledge of
the techniques and regulations of rigging
objects ovehead. It is the responsibility of
the installer to ensure the FRX-940 is safely
installed in accordance with applicable
regulations. If the FRX-940 is suspended,
Electro-Voice strongly recommends that the
system be inspected at least once a year. If
any sign of weakness or damage is detected,
remedial action should be taken immedi-
ately.
Architects' and Engineers' Specifications
The loudspeaker system shall be a coaxial,
two-way full-range design consisting of a 15-
inch woofer, a high-frequency compression
driver on a fiberglass molded constant-direc-
tivity horn and a dividing network providing
an acoustic crossover frequency of 1,800 Hz.
The system shall be configurable in a biamp
mode through internal switches in the cross-
over network. The loudspeaker shall meet the
following performance criteria; power han-
dling, 400 watts, based upon ANSI/EIA RS-
426-A 1980 standard for full-range loud-
speaker systems; frequency response, smooth
and usable at high SPL levels from 50 Hz to
20 kHz; pressure sensitivity, 101 dB SPL (pas-
sive mode) or 105 dB (LF)/109 (HF) in
biamp mode for 1 W at 1 m; impedance, 8
ohms nominal, 5 ohms minimum. The sys-
tem shall have a distribution pattern with
90
°
nominal horizontally from 3 kHz to
20 kHz and 40
°
nominal vertically from 3
kHz to 20 kHz. The enclosure shall be con-
structed from plywood and braced appropri-
ately, and the grille will be constructed from
powder- coated steel, backed by a weather-
resistant foam. The dimensions shall be 78.7
cm (31.0 in.) high by 71.9 cm (28.3 in.) wide
by 66.0 cm (26.0 in.) deep. Net weight shall
be 68.95 kg (152 lb). The system shall be
the Electro-Voice FRX-940 BLK (black
texturlac paint with black grille), or the FRX-
940 UN (unfinished ready for staining with
black grille), or the FRX-940 WH (white
texturlac paint with white grille).
Limited Warranty
Electro-Voice products are guaranteed against
malfunction due to defects in materials or
workmanship for a specified period, as noted
in the individual product-line statement(s)
below, or in the individual product data sheet
or owner’s manual, beginning with the date
of original purchase. If such malfunction oc-
curs during the specified period, the product
will be repaired or replaced (at our option)
without charge. The product will be returned
to the customer prepaid. Exclusions and
Limitations: The Limited Warranty does not
apply to: (a) exterior finish or appearance; (b)
certain specific items described in the indi-
vidual product-line statement(s) below, or in
the individual product data sheet or owner’s
manual; (c) malfunction resulting from use
or operation of the product other than as speci-
fied in the product data sheet or owner’s
manual; (d) malfunction resulting from mis-
use or abuse of the product; or (e) malfunc-
tion occurring at any time after repairs have
been made to the product by anyone other than
Electro-Voice Service or any of its authorized
service representatives. Obtaining Warranty
Service: To obtain warranty service, a cus-
tomer must deliver the product, prepaid, to
Electro-Voice Service or any of its authorized
service representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of autho-
rized service representatives is available from
Electro-Voice Service at 600 Cecil Street,
Buchanan, MI 49107 (800/234-6831 or FAX
616/695-4743). Incidental and Consequen-
tial Damages Excluded: Product repair or
replacement and return to the customer are
the only remedies provided to the customer.
Electro-Voice shall not be liable for any inci-
dental or consequential damages including,
without limitation, injury to persons or prop-
erty or loss of use. Some states do not allow
the exclusion or limitation of incidental or con-
sequential damages so the above limitation or
exclusion may not apply to you. Other
