Electro-Voice Duplex EP925-60T User manual

© Telex Communications, Inc. 02/2001
Part Number 38109-860 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.
Beamwidth vs Frequency
EP925-60T
EP925-100T
Duplex®Ceiling
Loudspeakers Systems
COMMERCIAL
General Product Description
The Electro-Voice®EP925 series Duplex®loudspeaker systems
are complete two-way ceiling loudspeaker packages.The package
consists of a rear enclosure, grille, and a two-way 12-in. Duplex®
loudspeaker which features a rectangular-coverage 90° x 90° horn
driven by a 1-in. compression driver coaxially mounted to a 12-in.
low-frequency cone driver with a high-temperature voice coil
assembly. The system is offered in either a 60-watt or 100-watt
line-matching transformer package. Each system utilizes a
dual-section crossover network with a self-resetting protection
circuit for the compression driver.
The EP925-60T utilizes a transformer that offers a selection of 7.5.
15, 30 and 60 watts delivered to the loudspeaker system using
either 25-V, 70-V or 100-V lines.
The EP925-100T utilizes a transformer that offers a selection of
50, 70, 100, 140 and 200 watts delivered to the loudspeaker
system using either 70-V or 100-V lines.
The rear enclosure provides an optimum internal volume,
ensuring extended low-frequency performance. It is constructed
from rugged heavy-gauge, cold-rolled steel, finished with a
black-wrinkle epoxy powder coat. In addition, the interior is lined
with a polyester batting blanket to ensure optimum acoustic
performance. Three hanging points are provided through the
rear cover each consisting of a 3/4-in. length of 3/8-16 threaded
rod or “all-thread” (see Mounting the System in a Ceiling). For the
EP925-60T and EP925-100T transformer models, the rear cover
provides access to both a dual terminal block for direct connection
to the speaker and an 8-pin terminal block that allows direct
connection to each of the transformer taps.
Impedance Response
Directivity and Q
Frequency Response
Frequency Response: ....................................................... 60-20,000 Hz
(see Figure 1,Note 2)
Pressure Sensitivity: ............................................................. 97 dB SPL
(1 W, 60 Hz-20 kHz, ref. 20 µPa)
Beamwidth, 500 Hz - 20 kHz:
Horizontal & Vertical: ............................................... 90° (+15°, - 40°)
Directivity Factor, Rθ (Q), 500 Hz-20 kHz
10.4 (+7.7, - 4.8)
Directivity Index, Di 500 Hz-20 kHz
10.2 dB (+2.7, - 3.3)
Power Handling: ...................................................................... 250 watts
(105 Hz-15 kHz, AES method)
Maximum Long-Term Output: ............................................. 120 dB SPL
(16 watts input, 1 m, ref. 20 µPa)
Impedance:
Nominal: ............................................................................ 8.0 ohms
Minimum at 650 Hz: .......................................................... 7.0 ohms
Components:
LF: ....................................... 305 mm (12 in.) high-efficiency woofer
HF: ................................... 25.4 mm (1 in.) exit high-efficiency driver
Specifications:
Input Terminals:
EP925-60T & EP925-100T
Dual terminal barrier strip with screw type connector for direct
connection to woofer and an eight-way barrier strip with screw-
type connector for transformer connections.
Dimensions:
Diameter: .......................................................... 451 mm (17.75 in.)
Depth: .................................................................... 381 mm (15 in.)
Net Weight:
EP925-60T EP925-100T
25.2 kg (55.5 lb) 27.4 kg (60.5 lb)
Shipping Weight:
EP925-60T EP925-100T
27.9 kg (61.5 lb) 30.2 kg (66.5 lb)
Finish: ................................................. Black-wrinkle powder coat enamel
Accessories: .............................................. EBK-2 hardware mounting kit
............................................................ CG-1 24-in. x 24 in. white grille kit
The attached grille is constructed from 16 gauge perforated
cold-rolled steel, finished in a semi-gloss black powder-coated
enamel.
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.
USA 12000 Portland A e South, Burns ille, MN 55337, Phone: [phone], FAX: [phone]
Canada 705 Progress A enue, 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 A enue, Sil erwater, 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 A . 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 A e South, Burns ille, MN 55337, Phone: [phone], FAX: [phone]
Latin America 12000 Portland A e South, Burns ille, MN 55337, Phone: [phone], FAX: [phone]
www.electrovoice.com • Telex Communications, Inc. • www.telex.com

Dimensions
Mounting the System in a Ceiling
Three hanging points are provided through the rear cover
consisting of 3/4-in. length of 3/8-16 threaded rod (“all-thread”) for
use with either the optional EBK-2 kit or by many other obtainable
hardware options that can utilize the 3/8-16 male thread.
It is imperative, before beginning the installation, to determine the
type of material employed in the ceiling to verify that it can safely
accommodate the weight of the system(s).
It is recommended to use all three hanging points with the optional
EBK-2 kit, which consists of three 3/8-16 eye-nuts which in turn
are screwed securely into each of the “all-thread” protruding through
the rear of the enclosure. From these points, the system can be
suspended from a girder, beam or appropriate ceiling fixture
depending on where the system is being used.
If the speaker system must be mounted inconspicuously, the system
can be suspended above a drop ceiling with an existing tile
replaced with the optional CG-1, 24-in. x 24-in. white powder-coated
perforated grille kit.
Selecting a Transformer Tap
The transformer tap of choice can be obtained by making
connection between the ground terminal (# 1) and any of the
wattage taps indicated on the input label. For the EP925-I00T, either
70-V or 100-V lines can be used. For the EP925-60T, either 25-V,
70-V or 100-V lines can be used — refer to the input panel label to
determine the appropriate wattage for the line voltage used.
Architects’ and Engineers’ Specifications
The loudspeaker systems shall be of the ceiling Duplex® type
consisting of a rear enclosure, front grille, transformer (for
transformer models) and 12-inch Duplex® type loudspeaker. The
loudspeaker will feature a single high-frequency compression
driver coaxially mounted to a single 305-mm (12-in.) high-power
woofer using a 90° x 90° coverage pattern horn. The loudspeaker
system shall meet the following criteria: power handling shall be
250 watts of band-limited pink noise with 6 dB crest factor. Frequency
response shall be smooth and uniformly usable from 60 Hz to 20
kHz. Pressure sensitivity shall be 97 dB SPL when measured at one
meter on axis with one watt of pink noise.
The Duplex® ceiling loudspeaker packages shall be the Electo-
Voice® models EP925-60T with 60-watt transformer and
EP925-100T with 100-watt transformer.
Polar Response Charts
Wiring Diagrams
Harmonic Distortion
at 0.01 rated power (3.0 W)
5
Harmonic Distortion
at 0.1 rated power (30 W)
5
Transformer Specifications
EP925-60T:
Frequency Response: ......................... 60 Hz to 15 kHz, +/-1 dB
Insertion Loss: .................................................................. <0.5 dB
Primary Voltage: ............................................................ 70.7 Vrms
Secondary Impedance: ............................................... 8-16 ohms
EP925-100T:
Frequency Response: ......................... 20 Hz to 20 kHz, +/-1 dB
Insertion Loss: .................................................................. <0.5 dB
Primary Voltage: ............................................................ 70.7 Vrms
Secondary Impedance: ............................................... 8-16 ohms
Primary Impedance and Power Drawn:
EP925-60T EP925-100T
667 ohms / 7.5 watt 99 ohms / 50.0 watt
333 ohms / 15.0 watt 71 ohms / 70.0 watt
166 ohms / 30.0 watt 50 ohms / 100 watt
83 ohms / 60.0 watt 36 ohms / 140 watt
25 ohms / 200 watt
Versions: EP950-60T, EP950-I00T