Specifications subject to change without notice
© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL6-1181
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1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 876-3333 / FAX (800) 765-3435
Specifications subject to change without notice
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.
8" DIAMETER/10 WATT UL LISTED
LOUDSPEAKER ASSEMBLIES
UHT SERIES
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.
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-
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”).
UHT Series
UKT Series
