© Telex Communications, Inc. 02/2001
Part Number 38109-859 Rev A
Beamwidth vs Frequency
EP405-8T
EP405-16T
Ceiling Loudspeaker
Systems
COMMERCIAL
General Product Description
The Electro-Voice
®
EP405 series loudspeaker systems are
complete full-range ceiling loudspeaker packages. The package
consists of a spring/bezel assembly, grille, rear enclosure, 4-inch
full-range loudspeaker and line-matching transformer. The
loudspeakers feature 4-inch curvilinear cones with high-linearity
treated surrounds together with high-temperature voice-coil
assemblies. The 405 series speaker components provide wide
and uniform dispersion throughout the critical speech bandwidth.
The EP405-8T utilizes a transformer that offers a selection of 1,
2, 4 and 8 watts delivered to the loudspeaker system using either
70-V or 100-V lines.
The EP405-16T utilizes a transformer that offers a selection of 2,
4, 8 and 16 watts delivered to the loudspeaker system using
either 70-V or 100-V lines.
The bezel and perforated grille are finished in semigloss white
powder-coated enamel. The rear enclosure is constructed from
zinc-plated cold-rolled steel.
The rear enclosure provides an optimum internal volume
ensuring extended low-frequency performance. It is constructed
from heavy-gauge, rugged cold-rolled steel, reinforced to prevent
panel resonance, and finished with rust-inhibiting zinc plating. A
rear cover, with provisions for a junction box fitting, provides
access to an 8-pin terminal block that allows direct connection to
each of the transformer taps.
An optional tile bridge system is available for safe suspension of
the EP405 series ceiling systems in a drop ceiling that uses
mineral wool, or other fiber-based ceiling tiles.
Impedance Response
Directivity and Q
Frequency Response
Versions Available: ................................
EP405-8T and EP405-16T
System Type: .....................................
Full range, ceiling loudspeaker
System Pressure sensitivity: ....................................
90 dB SPL
(1 W, 500 Hz- 3,000 Hz, ref. 20 mPa, see Note 1)
Frequency Response
: ..........................................
105 - 15,000 Hz
(see Figure 1, Note 2)
Power Handling: ..............................
16 watts, Maximum Long Term
(105 Hz - 15 kHz, AES method, see Note 3)
Output: .....................................................................
101.2 dB SPL
(16 watts input, 1 m, ref. 20 µPa, see Note 4)
Impedance:
Nominal
: ............................................................................ 8.0 ohms
Minimum
at 650 Hz: .......................................................... 7.0 ohms
Components:
4-inch, high-efficiency, low-frequency driver with a full-range curvilinear
cone
Input Terminals:
Eight-way barrier strip with screw, or push type, connectors that will
accept up to two #10 AWG wires
Accessories: ............................................
CTB-4 Ceiling Tile Bridge
Dimensions:
Loudspeaker diameter: ........................................... 203 mm (8.0 in.)
Depth: .................................................................... 184 mm (7.25 in.)
Specifications:
Net Weight:
EP405-8T: ................................................................... 2.3 kg (5.0 lb)
EP405-16T: ................................................................. 2.7 kg (6.0 lb)
Shipping Weight:
EP405-8T: ................................................................... 2.5 kg (5.5 lb)
EP405-16T: ................................................................. 3.0 kg (6.5 lb)
Finish:
............................................ White powder-coated enamel
Connection Type:
Eight-way barrier strip that will accept (2) #10 gauge wires
Transformer Specifications
Frequency Response:
.......................... 65 Hz to 15 kHz, ±3 dB
Insertion Loss:
................................................................ <1.0 dB
Secondary Impedance:
................................................... 8 ohms
Primary Impedances and Power Drawn:
These components have been designed to work together as a
complete system in a wide range of different ceiling constructions.
They provide wide dispersion, high-efficiency, high-maximum
output, ease of installation, and wide range reproduction of music
or voice.
Polar Response Charts
E
8
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7
5
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E
6
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2
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4
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3
U.S.A. and Canada only.
For customer orders, contact the Customer Service department at
800/392-3497 Fax: 800/955-6831
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.
USA
12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043
Canada
705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588
Switzerland
Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 41/32-331-6833. FAX: 41/32-331-1221
Germany
Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 392, FAX: 49 9421-706 287
France
Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538
Australia
Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N.S.W. 2128, Australia, Phone: 61/2-9648-3455, FAX: 61/2-9648-5585
Hong Kong
Unit E & F, 21/F, Luk Hop Industrial Bldg., 8 Luk Hop St., San PO Kong, Kowloon, Hong Kong, Phone: 852-2351-3628, FAX: 852-2351-3329
Japan
2-5-60 Izumi, Suginami-ku,Tokyo, Japan 168, Phone: 81-3-3325-7900, FAX:81-3-3325-7789
Singapore
3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206
Mexico
Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. Mex. 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588
UK
4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084
Africa, Mid-East
12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212
Latin America
12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212
www.electrovoice.com • Telex Communications, Inc. • www.telex.com
