Electro-Voice FC100 EDS User Manual

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 phenolic­constructed 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.

FC100

Compound

Diffraction Horn

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.

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

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 (– – –).

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).

Figure 1.

FC100 Polar Response

USA 12000 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Canada 705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: [phone], FAX: [phone]
Switzerland Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: [phone]. FAX: [phone]
Germany Hirschberger Ring 45, D94315, Straubing, Germany, Phone: [phone], FAX: [phone]
France Parc de 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 Industrial Bldg., 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 Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: [phone], FAX: [phone]
Mexico Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. 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 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Latin America 12000 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]

www.electrovoice.com • Telex Communications, Inc. • www.telex.com

© Telex Communications, Inc. 02/2001

Part Number 38109-856 Rev A

FC100 Beamwidth vs. Frequency

Figure 2.

Figure 3.

FC100 Directivity Factor and Directivity Index vs.Frequency

For customer orders, contact the Customer Service department at

For warranty repair or service information, contact the Service

For technical assistance, contact Technical Support at 866/78 AUDIO

Please refer to the Engineer ing Data Sheet for warranty information.

Specifications subject to change without notice.

U.S.A. and Canada only.

800/392-3497 Fax: [phone]

Repair department at 800/685-2606