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22.
Rigging Precautions: When mounting or suspending loudspeaker enclo-
sures, it is essential that load ratings, rigging techniques, and special
safety considerations be appropriate for the installation. Use only the
mounting/rigging points on the loudspeaker enclosure intended for
this purpose. The user must determine the load requirements, dynamic
loading, and any other contributing factors affecting the loudspeaker
installation. The user must determine the proper design factor for
specific applications and the required load rating of the connection to
structure. Comply with all applicable federal, state, and local regula-
tions.
We strongly recommend the following rigging system practices:
• Documentation: Thoroughly document the mounting/rigging
design with detailed drawings and parts lists.
• Analysis: Have a licensed structural engineer or other qualified
professional review and approve the mounting/rigging design
before its implementation.
• Installation: Use personnel experienced and qualified for mount
-
ing/rigging loudspeakers in accordance with and in compliance
with all federal, state and local regulations.
DANGER: Loudspeakers should be mounted or suspended only
by persons with knowledge of the proper hardware and rigging
techniques. When stacking or pole-mounting loudspeakers, be
sure that they are stabilized and secured from falling over or being ac
-
cidentally pushed over. Failure to follow these precautions may result
in damage to the equipment, personal injury, or death.
Introduction
The HD1531 Powered Loudspeaker represents the
first step into portable high-definition live sound, pro-
viding precise, articulate full-range sound at the high-
output levels demanded of modern PA systems. Three
Class-D Fast Recovery™ amplifiers efficiently drive
1800 Watts of total system power, providing maximum
output with minimal distortion. True high-definition
sound is possible thanks to an arsenal of technological
innovations including our patented acoustic correction
processing that was previously only available on high-
end stadium touring systems. This complex processing,
along with a phase-coherent electronic crossover and
transducer time-alignment provide unparalleled acous-
tic accuracy that has to be heard to be believed.
The 15” neodymium woofer, 6” midrange transducer
and heat-treated titanium compression driver are
custom designed by the award winning engineering
team at EAW, delivering the ultimate in both quality and
performance. A user-adjustable 3-band contour EQ is
built into the loudspeaker and features a sweepable mid
frequency for precise tonal shaping.
All of these high-end components are housed in a
rugged, all-wood enclosure that not only protects, but
allows for multiple mounting options including flying
and pole-mounting. The HD1531 brings high-definition
sound to the world of portable PA systems.
Features
• 1800W of ultra-efficient Class-D Fast
Recovery™ amplification
• LF 700W RMS / 1400W peak
• MF 100W RMS / 200W peak
• HF 100W RMS / 200W peak
• High-definition audio processing includes:
• Revolutionary patented acoustic correction
algorithms
• Transducer time alignment and phase
correction
• Precision 3-way crossover
• Custom designed transducers by EAW
• 15” neodymium woofer with 3” voice coil
• 6” horn-loaded, high-output mid-range
transducer
• 1.75” compression driver with heat-treated
titanium diaphragm
• User-adjustable 3-band contour EQ with
sweepable mid-frequency
• Optimized wide-dispersion WaveFront™
high / mid horn system
• Ultra-compact and lightweight
• Integrated limiting and protection circuitry
• Rugged all wood cabinet (15mm birch plywood)
• 12 integrated fly points for horizontal and
vertical rigging
• Stand / pole mountable
Contents
IMPORTANT SAFETY INSTRUCTIONS 2
INTRODUCTION 3
FEATURES 3
HOOKUP DIAGRAMS 4
REAR PANEL FEATURES 5
PLACEMENT 7
ROOM ACOUSTICS 7
RIGGING 8
THERMAL CONSIDERATIONS 9
AC POWER 9
CARE AND MAINTENANCE 9
APPENDIX A: SERVICE INFORMATION 10
APPENDIX B: CONNECTIONS 11
APPENDIX C: TECHNICAL INFORMATION 12
HD1531 BLOCK DIAGRAM 13
HD1531 GRAPHS AND DIMENSIONS 14
HD1531 LIMITED WARRANTY 15
3
Owner’s Manual
Owner’s Manual
Part No. SW0738 Rev. B 05/09
©2004-2009 LOUD Technologies Inc. All Rights Reserved.