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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

INTRODUCTION

FEATURES

HOOKUP DIAGRAMS

REAR PANEL FEATURES

PLACEMENT

ROOM ACOUSTICS

RIGGING

THERMAL CONSIDERATIONS