Atlas Sound UKT, UHT User Manual

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL6-1181

327

SIX

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

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 pack­ages 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 sig­naling 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 appli­cations. 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, loud­speaker 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

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL6-1181

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

SPEAKER BAFFLE XFMR MOUNTS ENCLOSURE**

MODEL TYPE TYPE COLOR VOLTAGE (ORDER SEPARATELY)
UHT70(25)C-U51-8 U51-8 White U95-8, U96-8

*UHT70(25)C-U61-8W U61-8(W) Brushed Aluminum or White U95-8, U96-8
*UHT70(25)C-U62-8 U62-8 White U95-8, U96-8
UHT70(25)C-U161-8 Single U161-8 White U198-8, USE175-4
*UHT70(25)C-U164-8 Voice U164-8 White 70.7V(25V) U191-78
*UHT70(25)C-U410-8 Coil U410-8 Brushed Aluminum or White Not Required
*UHT70(25)C-UG22-8 UG22-8 Off White Matte U95-8, U96-8
*UHT70(25)C-UVP161-R8 UVP161-R8 White U193-8
*UHT70(25)C-UT51-8 UT51-8 White UT95-8
*UHT70(25)C-UT61-8W UT61-8(W) Brushed Aluminum or White UT95-8
*UHT70(25)C-UT161-8 UT161-8 White UT198-8, USE175-4
*UHT70(25)C-UT164-8 UT164-8 White UT191-78
UKT70(25)-2-U51-8 Dual U51-8 White U95-8, U96-8
*UKT70(25)-2-U62-8 Voice U62-8 White 70.7V(25V) U95-8, U96-8
UKT70(25)-2-U161-8 Coil U161-8 White U198-8, USE175-4
*UKT70(25)-2-UM222W UM222(W) Brushed Aluminum or White U95-8, U96-8

LOUDSPEAKER / TRANSFORMER / BAFFLE / ENCLOSURE INFORMATION

TRANSFORMER SPECIFICATIONS

PRIMARY TAPS SECONDARY INSERTION LOSS CORE SIZE DC BLOCKING CAPACITOR

1/2, 1, 2, & 5 8 Ohms 1.5dB

1

⁄2

" x

5

⁄8

" 10 mfd @ 50V (25V Xfmr)

Watts (13mm x 16mm) 4 mfd @ 150V (70.7V Xfmr)

UL Listed 8" diameter fire-protective signaling loudspeaker shall be
Atlas Sound single voice coil Model ________ (UHT Series) or dual
voice coil Model __________ (UKT Series) for supervised service.
UHT Series loudspeaker shall consist of a molded fire-retardant/mois­ture-proof cone, whizzer cone, and 10 oz. ceramic magnet. It shall
have a single 1" diameter voice coil and shall be equipped with a
(70.7 or 25V) transformer, and a DC blocking capacitor for line super-

vision applications. Dual voice coil Series UKT shall provide for line
supervision with dual 1" dia. voice coils, two transformers, and a DC
blocking capacitor. Loudspeaker shall be pre-assembled to Atlas
Sound, baffle Model __________. Loudspeaker/baffle assembly shall
mount to Atlas Sound UL approved companion enclosure Model
__________.

* Noted assemblies are available in quantities of 100 or more only.
** Recessed enclosures for UL listed loudspeakers are also plenum rated under UL file S1824.

U51-8

Standard Round

Grille for Stock

Availability

U161-8

Standard Square

Grille for Stock

Availability

U61-8W

U62-8

UM222W

UG22-8

U164-8

UVP161-R8

Vandal-Proof Grille

U410-8

ARCHITECT AND ENGINEER SPECIFICATIONS