Specifications subject to change without notice
© 2007 Atlas Sound
Printed in U.S.A.
000202
SL2-1421
167
TWO
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
/
FAX (800) 765-3435
AtlasSound.com
60 AND 30 WATT
EXPLOSION-PROOF LOUDSPEAKERS
HLE/MLE Series
FEATURES
• Explosion-Proof Loudspeakers for Signal and Communications Systems
• Listed by UL and CSA for Use in Hazardous/Combustible Environments (noted models)
• Available with Internally Mounted, Factory-Installed Transformer
• Choice of 60 or 30 Watt High-Intelligibility Driver in Cast Aluminum Housing
• Efficiency of Reflex-Style Projectors with Wide Angle or Circular Sound Dispersion
APPLICATIONS
Install HLE or MLE Series loudspeakers to efficiently and safely communicate in combustible
and dust-filled areas. All drivers comply with the regulations governing electrical equipment at
hazardous locations as set forth by the National Electric Code. Drivers are listed by UL and
CSA (HLE Series only). They are recommended for paging, signal and voice communication in
chemical processing, petroleum, natural resource exploration and atmospheres as listed in the
chart below.
GENERAL DESCRIPTION
Series HLE and MLE loudspeakers are explosion-proof compression driver/horn assemblies
engineered for high-efficiency voice and electronic signal communication in hazardous areas.
Drivers, which are protected within a rugged die-cast aluminum housing, are available in
60-watt (HLE Series) and 30-watt (MLE Series) power handling versions. Models with T suf-
fix include a factory-installed, internally mounted transformer (Note: To meet UL requirements
transformer must be factory installed). All models are equipped with
1
⁄
2
" conduit access and an
adjustable mounting bracket.
Projector horns are available in two styles to meet dispersion requirements. Model HLE/MLE-
30 is a high-quality, polycarbonate projector that creates a 120 ° x 60 ° pattern for wide area
coverage. Model HLE/MLE-32 is a spun aluminum bell providing a 95 ° circular distribution
emphasis.
Note:
– For Canadian use (Price List page 17 Text)
Drivers and projector horns are ordered and shipped separately. For performance accuracy,
specifications are listed for assembled configurations.
UNDERWRITERS' LABORATORY LISTINGS
DRIVER
CLASS / GROUP
FOR ATMOSPHERE CONTAINING:
HLE-1(T)
Class 1 / Division 1 / Group C & D
Gas Atmospheres (Including Ethyl, Ether, Gasoline Naphtha, Alcohols)
MLE-1(T)
HLE-3(T)
Class 1 / Division 1 / Group B, C & D
Gas Atmospheres (Including Ethyl, Ether, Gasoline Naphtha, Alcohols,
MLE-3(T)
Butane, Propane)
plus,
Hydrogen, Gas and Vapor, (Manufactured Gas)
MODEL
POWER
FREQ.
SOUND
INTERNAL
ASSEMBLY
DRIVER
HORN
RATING RESPONSE LEVEL* SENSITIVITY** DISPERSION IMPEDANCE
XFMR
SIZE
(“T” versions only)
HLE-1(T)
HLE/MLE-30
60 Watts
250 Hz-
109dB
-18dBm
120 ° x 60 °
16 Ohms
60 Watt
Driver & Horn
HLE-3(T)
HLE/MLE-30
Cont.
12 kHz
108dB
Model T-18 14"W x 6"H x 17
1
⁄
2
”D
MLE-1(T) HLE/MLE-30
30 Watts
300 Hz
107dB
-21dBm
120 ° x 60 °
8 Ohms
30 Watt
(35.6 x 15.2 x
MLE-3(T) HLE/MLE-30
Cont.
14 kHz
106dB
Model T-20
44.5cm)
HLE-1(T)
HLE/MLE-32
60 Watts
190 Hz-
112dB
-16dBm
95 °
16 Ohms
60 Watt
Driver & Horn
HLE-3(T)
HLE/MLE-32
Cont.
12 kHz
111dB
Model T-18
16
1
⁄
2
"Dia. x
MLE-1(T) HLE/MLE-32
30 Watts
200 Hz-
110dB
-20dBm
95 °
8 Ohms
30 Watt
(42 x 54.6cm)
MLE-3(T) HLE/MLE-32
Cont.
10 kHz
110dB
Model T-20
* Measured 1 Watt / 1 Meter.
** As microphone; re 10 dynes / cm2
HLE-1 Driver
HLE-1 Driver mounted to HLE/MLE-30 Horn
(order separately)
HLE-1 Driver mounted to HLE/MLE-32
Horn (order separately)