Electro-Voice FC100 User manual

FC100
Compound
Diffraction Horn
General Product Description
The Electro-Voice FC100 consists of two horn sections for
use with 1828C or 1829 model drivers to form a wide-range,
integrated system.
The folded construction of the rear horn coupled with the
smaller dimensions of the front horn, present a 1,000 Hz
acoustic crossover. This separation of frequencies provides
a more extended frequency response and cleaner sound.
The 150 degree horizontal by 110 degree vertical dispersion
pattern is beneficial in many applications requiring a wide
coverage pattern. Furthermore, excellent loading is
maintained to a low-frequency cutoff of 260 Hz.
Architects’ and Engineers’ Specifications
The horn shall be the compound diffraction type with outer
housing of fiberglass, a zinc diecast front horn and phenolic-
constructed inner horns.
The low-frequency horn will be 52.0 cm (20.5 in.) high by
26.5 cm (10.5 in.) wide and 51.0 cm (20.0 in.) deep, not
including a driver. Net weight (less driver) shall not exceed
4.9 kg (10.8 lb).
A separate high-frequency horn shall be provided, capable
of individual rotation.The acoustical crossover shall be 1,000
Hz.
Specifications:
Horizontal Beamwidth:
150° @ 2 kHz (see Figure 2)
Vertical Beamwidth:
110° @ 2 kHz (see Figure 2)
Directivity Factor Rθ (Q):
5.2 @ 2 kHz
Usable Low-Frequency Limit:
260 Hz
Construction:
Large fiberglass compression molding with gray finish, front
horn of gray diecast zinc and phenolic compresion-molded
inner horns with steel “U” bracket.
Mechanical Construction of Driver:
Threaded metal throats to accept a screw-in compound driver
with a throat opening of 0.7 inch to 1.0 inch diameter and a
standard 1 3/8-inch thread.
Dimensions:
Height: ........................................................ 52.0 cm (20.5 in.)
Width: ......................................................... 26.5 cm (10.5 in.)
Depth: ......................................................... 50.0 cm (20.0 in.)
Net Weight: ............................................................ 4.9 kg (10.8 lb)
Shipping Weight: ................................................... 5.4 kg (11.8 lb)
Recommended Horns:
1828C 1828T
1829B 1829BT
COMMERCIAL
The loudspeaker shall be capable of satisfactory mechanical
performance in the temperature range from -40°C (-40°F) to
+71 °C (+161 °F) not subject to sunlight embrittlement and
resistant to damage from weather, moisture, and fungus.
A steel swivel bracket capable of either vertical or horizontal
installations and a variety of adjustments is provided. The
Electro-Voice FC100 is specified.

© Telex Communications, Inc. 02/2001
Part Number 38109-856 Rev A
U.S.A. and Canada only.
For customer orders, contact the Customer Service department at
800/392 3497 Fax: [phone]
For warranty repair or service information, contact the Service
Repair department at 800/685 2606
For technical assistance, contact Technical Support at 866/78 AUDIO
Please refer to the Engineering Data Sheet for warranty information.
Specifications subject to change without notice.
Polar Response
The directional characteristics of the FC100, with driver attached,
were measured by running a set of horizontal/vertical polar
responses, in a large anechoic chamber, at each one-third-octave
center frequency. The test signal was one-third-octave,
pseudo-random pink noise centered at the indicated frequencies.
The measurement microphone was placed 6.1 m (20 ft.) from the
horn mouth, while rotation was about the waveguide geometric
apexes. These axes of rotation are quite close to the apparent
(acoustic) apexes across the frequency range of measurement.
Errors attributable to the slight differences between the geometric
and acoustic apexes are reduced to an inconsequential level by
the relatively long, 20-foot measuring distance. The horn was
suspended freely with no baffle. The polar plots shown in Figure 1
display the results of these tests. The center frequency is noted on
each plot. The wider plot on each chart is the horizontal polar (–)
and the narrower plot is the vertical polar (– – –).
Figure 1.
FC100 Polar Response
Figure 2.
FC100 Beamwidth vs. Frequency
Figure 3.
FC100 Directivity Factor and Directivity Index vs.Frequency
Beamwidth
A plot of the FC100’s 6-dB-down total included beamwidth angle is
shown in Figure 2 for each one-third-octave center frequency.
Directivity
The axial directivity factor Rθ (formerly Q) of the FC100 horn was
computed at each one-third-octave center frequency from the
horizontal/vertical polars and is displayed in Figure 3.
Installation
As shipped, the “U” bracket is in position for vertical mounting. For
horizontal dispersion, or for mounts where bracket mounting holes
must be vertical, move bracket to the rear mounting position. The
horn can be mounted in a variety of horizontal and vertical
configurations by using adjustments of the swivel connections
(bracket to horn).
USA 12000 Portlan Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Canada 705 Progress Avenue, Unit 46,Scarborough, Ontario, Cana a, M1H2X1,Phone: [phone], FAX: [phone]
Switzerland Keltenstrasse 11, CH-2563 IPSACH, Switzerlan , Phone: [phone]. FAX: [phone]
Germany Hirschberger Ring 45, D94315, Straubing, Germany, Phone: [phone], FAX: [phone]
France Parc e Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: [phone], FAX: [phone]
Australia Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N.S.W. 2128, Australia, Phone: [phone], FAX: [phone]
Hong Kong Unit E & F, 21/F, Luk Hop In ustrial Bl g., 8 Luk Hop St., San PO Kong, Kowloon, Hong Kong, Phone: [phone], FAX: [phone]
Japan 2-5-60 Izumi, Suginami-ku,Tokyo, Japan 168, Phone: [phone], FAX:[phone]
Singapore 3015A Ubi R 1, 05-10, Kampong Ubi In ustrial Estate, Singapore 408705, Phone: [phone], FAX: [phone]
Mexico Av. Parque Chapultepec #66-201, Col. EI. Parque E o. Mex. 53390, Phone: [phone], FAX: [phone]
UK 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: [phone], FAX: [phone]
Africa, Mid East 12000 Portlan Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Latin America 12000 Portlan Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
www.electrovoice.com • Telex Communications, Inc. • www.telex.com