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 accidentally pushed over. Failure to follow these precautions may result in damage to the equipment, personal injury, or death.

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

HD1521 BLOCK DIAGRAM

13

HD1521 GRAPHS AND DIMENSIONS

14

HD1521 LIMITED WARRANTY

15

Manual Owner’s

Introduction

The HD1521 Powered Loudspeaker represents the first step into portable high-definition live sound, providing precise, articulate full-range sound at the high-output levels demanded of modern PA systems. Two Class-D Fast Recovery™ amplifiers efficiently drive 1600 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 acoustic accuracy that has to be heard to be believed.

The 15” neodymium woofer 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 HD1521 brings high-definition sound to the world of portable PA systems.

Features

•1600W of ultra-efficient Class-D Fast Recovery™ amplification

•LF 700W RMS / 1400W peak

•HF 100W RMS / 200W peak

•High-definition audio processing includes:

•Revolutionary patented acoustic correction algorithms

•Transducer time alignment and phase correction

•Precision 2-way crossover

•Custom designed transducers by EAW

•15” neodymium woofer with 3” voice coil

•1.75” compression driver with heat-treated titanium diaphragm

•User-adjustable 3-band contour EQ with sweepable mid-frequency

•Ultra-compact and lightweight

•Integrated limiting and protection circuitry

•Rugged all wood cabinet (15mm birch plywood)

•12 integrated fly points for horizontal and verti- cal rigging

•Stand / pole mountable

Owner’s Manual



Part No. SW0739 Rev. B 05/09

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