UHT Series Manuals




8" DIAMETER/10 WATT UL LISTED
UHT SERIES
LOUDSPEAKER ASSEMBLIES
UKT SERIES
FEATURES
• UL Listed, Fire-Retardant and Moisture-Proof Cone Loudspeakers Reproduce Emergency
Alarm and Voice Instructions with Superior Intelligibility and Extended Frequency Response
• Attractive Ceiling-Loudspeaker/Baffle Assemblies Provide Unobtrusive Appearance of Life
Safety and Emergency Signaling Loudspeakers
• Selection of Baffle Styles and Multi-Tapped Transformers Meet a Variety of Aesthetic and
Application Requirements
• Listed Under UL Standard 1480 (Speakers for Fire-Protective Signaling Systems)
• Selection of UL Approved, Companion Enclosures is Offered
APPLICATIONS
Install attractive UL Listed UHT and UKT Series ceiling loudspeaker/baffle/transformer pack-
ages for dependable voice and alarm transmission in emergency audio evacuation systems.
Cone loudspeaker assemblies deliver superior intelligibility for application in multi-occupancy
and expanded space areas including high-rise residences, public buildings, health care and
educational facilities, offices, banks, shopping areas, motels/hotels, distribution centers, and
transportation terminals. Applied properly, single and dual voice coil models meet life safety
code requirements per N.F.P.A. Standard 72 for supervised loudspeakers in fire-protective sig-
naling and communication systems.
UHT Series
GENERAL DESCRIPTION
Atlas Sound’s UHT and UKT Series are 8" diameter single and dual voice coil loudspeakers
equipped with dual (whizzer) cone and 10 oz. ceramic magnet to deliver extended frequency
response with high intelligibility and minimal distortion. Cost-effective units are complete with
fire-retardant moisture-proof cones, factory-mounted transformer, 6" color-coded leads, and a
wide selection of architecturally pleasing baffles. UHT Series loudspeakers have a 1" dia. voice
coil, choice of 70.7 or 25-volt transformer, and DC blocking capacitor for line supervision appli-
SIX
cations. UKT Series loudspeakers are equipped with two 1" dia. voice coils, two transformers
(specify 70.7 or 25 volts), and a DC blocking capacitor. To comply with UL requirements, loud-
speaker packages must be used with UL-approved enclosures (refer to back page for baffle/
enclosure information and to SL6-1424 “Enclosures for UL Listed Loudspeakers”).
UKT Series
LOUDSPEAKER SPECIFICATIONS
FREQUENCY
POWER
FLUX
SENSITIVITY
VOICE COIL
MODEL
SIZE
MAGNET
RESPONSE
RATING(RMS) IMPEDANCE DENSITY
*
DIAMETER DEPTH
UHT
85 Hz - 8 kHz
10 Watts
8 Ohms
97dB Peak
8"
10 oz.
+ 5dB
10,600
94dB Avg.
1"
27⁄8"
UKT
(203mm)
(260 g)
60 Hz - 8 kHz
10 Watts
8 Ohms
Gauss 
94dB Peak
(25mm)
(73mm)
+ 5dB
(each coil)
91dB Avg.
* UL ratings measured per UL Standard 1480 at 1 watt, 10 feet  (3dB increment rating): UHT = 81dB; UKT = 78dB.
Specifications subject to change without notice
1601 JACK MCKAY BLVD. /  ENNIS, TEXAS 75119  U.S.A.  /  TELEPHONE: (800) 876-3333 /  FAX (800) 765-3435
327
© 2001 Atlas Sound LP
Printed in U.S.A.
000501
SL6-1181


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