JBL Project EVEREST DD66000 Manual de usuario

Project Everest DD66000

Product Commentaries

and User Guide

Thank you for purchasing the Project Everest DD66000 loudspeaker system.

Before using the system, please take the time to read through this user guide

to understand this product well and also to use it properly.

Project Everest DD66000

Table of Contents

Preface…5

Chapter 1

Legacy…7

Chapter 2

Project Everest DD66000…11

Chapter 3

Unpacking…19

Chapter 4

Selecting Cable…21

Chapter 5

Amplifier Recommendations…23

Chapter 6

Placement and Setup Considerations…25

Chapter 7

Switch Operations…27

Chapter 8

Connections…33

Chapter 9

Care and Maintenance…37

Chapter 10

Troubleshooting and Service Guide…39

Project Everest DD66000 Specifications…41

Project Everest DD66000

PREFACE

Thank you for selecting the Project Everest DD66000 loudspeaker system. It

represents the culmination of our research and developmental efforts in sound

reproduction over the last half century. We have labored to create a loudspeaker

system with no acoustical or electrical limitations whatsoever. While the Project

Everest DD66000 is itself a new development, the goal that it achieves goes back

to the earliest days of the original James B. Lansing Sound Company.

However, it is the level of your listening pleasure that ultimately determines

how successful we are in this endeavor. To ensure a perfect listening

experience, we ask you to carefully follow the setup and operation procedures

outlined in this Project Everest DD66000 User Guide.

This manual serves several purposes. It contains all necessary background

information and detailed instructions for setting up your Project Everest

DD66000 loudspeaker system, including unpacking the loudspeaker, selecting

the correct location, speaker wire, wiring method and amplification, and

connecting it to its associated electronics. This information will be found in

Chapters 3 through 7. In addition, we have included a detailed description of

your Project Everest DD66000 loudspeakers (Chapter 2) so that you may

become thoroughly acquainted with the unique design and technical features.

Despite the formidable nature of the Project Everest DD66000, the setup

procedure for this loudspeaker system is relatively simple. Again, we strongly

urge you to read this manual thoroughly before you begin, and then consult it

frequently throughout the process. Certain considerations must be made in

placing the speakers; their physical characteristics make it imperative that you

become familiar with the entire setup process in advance.

Also, we believe that the historical and technical information included will add

immeasurably to your complete enjoyment of your system. As a loudspeaker,

Project Everest DD66000 is unparalleled in the field of sound reproduction.

The story and principles behind it are an interesting, informative and fitting

start to a lifetime of musical enjoyment.

Project Everest DD66000

CHAPTER 1

Legacy – the Historical Development of the JBL Project Loudspeakers

Of those who have sought perfection in sound reproduction, only a few have

actually come close. For one thing, it is a costly process. It is rare indeed when

an individual or group is able to triumph over the constraints of economic and

technological realities even once.

At JBL, this has happened eight times. In each case, our engineers were told to

build the speaker system they had always wanted to build. Whatever resources

were required would be made available. Thus began an ongoing search for new

frontiers in sound reproduction, beginning in the mid-1950s and continuing to

the present day.

The products that have resulted from this venture are now known as the JBL

Project loudspeakers. Each represents the absolute peak of every technological,

material and engineering innovation available at the time, combined into a

single system. They are Hartsfield, Paragon, Everest DD55000, K2 S9500/7500,

K2 S5500, K2 S9800 and K2 S5800. The newest is Project Everest DD66000.

Although differing in performance details and physical attributes, all of the

Project loudspeakers have shared a common objective – to elevate sound

reproduction to levels defined only by the limitations of existing materials and

technology. The fact that all Project loudspeakers have many common features,

despite a spread of nearly sixty years, is a testimony to the excellence of the

technology and manufacturing techniques upon which JBL was built.

Defining the Project Concept

The Hartsfield began a tradition at JBL that continues today. First, engineer a

product as close to perfection as possible. When it reaches that level, make it better.

In 1954, the Hartsfield was significant in that it represented not new technology,

but rather a new level of technical manufacturing, in the spirit of the approach

pioneered by James B. Lansing some twenty years before. Like its Project

series successors, it was a high-efficiency system incorporating compression

driver technology and combining the qualities of high-output, low-distortion,

exceptional stereo imaging and fatigue-free listening. Most important, it was

the first loudspeaker system available to consumers to do all this.

Project Everest DD66000, the most advanced and sophisticated loudspeaker in

the world today, is the latest expression in technology that is deeply rooted in

more than 60 years of tradition. JBL’s president in 1954, William Thomas,

described the Hartsfield as the “speaker system we have always wanted to build

[with] the finest components ever made available to serious listeners.”

He went on to describe the process behind the creation of the Hartsfield:

“Most people who own and appreciate fine sound reproduction equipment

look forward to the day when they will be able to assemble a system without

limitation in just exactly the way they think it should be done. Periodically a

manufacturer gets this same feeling.... The science of acoustics has provided us

with the basic principles available to all for achieving precision reproduction. It

is only a matter of incorporating these methods into a system design, and then

taking every bit of trouble necessary to build a system precisely to the design.”

He added, “It isn’t easy, but that’s the way it is done.”

The Ranger-Paragon, JBL’s second Project system, was the first serious

attempt at a reflecting speaker system, and broke ground in the new concept of

stereo imaging. Basically two independent full-range speaker systems installed

in a handsome, curved cabinet nearly 9 feet (2.7 meters) long, the Paragon’s

enclosure was treated as an extension of its transducers. In essence, the system

had its own “built-in acoustics.” In many respects, the Paragon anticipated

loudspeaker developments that would occur years and even decades later. This

“built-in acoustics” concept is present in the latest Project Everest DD66000.

For nearly 30 years, the Paragon remained the most acoustically perfect speaker

system for the home. Today, along with the Hartsfield, it is still the most

sought-after speaker in the world.

In 1986, JBL introduced a new Project system that retained the Paragon’s

overall sense of musicality while upgrading its character by incorporating three

decades’ worth of continuous development in every facet of its design. Its name –

Project Everest – reflected the pinnacle of achievement it represented. This was

the original Project Everest DD55000.

Project Everest DD66000

For the first time, the rest of the sound reproduction chain – and not the

loudspeaker or its transducers – would impose limits on overall system

performance. Like the Paragon and Hartsfield, Project Everest was built

around compression driver technology and addressed a more refined stereo

image than was previously considered technically feasible.

Since the original Project Everest was introduced, sound recording and

playback technology has undergone a revolution of its own. With the advent of

the CD, extremely demanding recorded signals became the rule rather than the

exception – the typical source material used by the average audio enthusiast

became superior to the best demonstration material of even just a few years

prior. In overall dynamics and transient response, transducers became once

again a potentially weak link in the high-end audio reproduction chain.

It was in this environment that JBL set out to create its fourth and fifth Project

loudspeakers, K2 S9500 and K2 S5500. As with Hartsfield, the simplicity of a

two-way system was considered the most promising design track. Advances in

transducer design and low-frequency alignment would make possible the

construction of a two-way system of unprecedented physical and acoustical

scale. Our engineers took the core components – the low- and high-frequency

drivers – and optimized them by redesigning their magnetic structures,

diaphragms and framework for greater linearity, dynamic capability and

transient response.

In the years following the introduction of the K2 S9500 and K2 S5500, sound

reproduction technology underwent another series of revolutionary changes,

with the introduction of DVD-Video, Dolby®Digital, DTS,

®DVD-Audio and

Super Audio CD (SACD™). Frequency responses to 50kHz, as well as three-

digit dynamic range and signal-to-noise ratios, have now become commonplace.

In order to faithfully reproduce such robust sonic properties, the loudspeaker

needed to undergo drastic improvements to its transducer, network and

enclosure technologies.

The K2 S9800 employed a three-way design, incorporating an ultrahigh-

frequency (UHF) compression driver and horn to reproduce high frequencies

up to 50kHz. With the UHF driver handling the higher frequencies, the high-

frequency (HF) transducer could then be upgraded to a new design using a 3-inch

(75mm) diaphragm for better reproduction of lower frequencies and to blend

better with the woofer than the older generations’ 2-inch (50mm) diaphragm

did. Both compression drivers utilized newly developed beryllium diaphragms

to provide the lowest distortion and flattest frequency response possible.

In order to re-create the extremely high dynamic range provided by today’s

audio sources, a brand-new low-frequency transducer was developed from the

ground up, utilizing an alnico magnet, a 4-inch (100mm) edge-wound voice

coil, and a 15-inch (380mm) cone. Extensive computer-aided engineering

and design effort was necessary to develop the optimized port tuning

employed in Project K2 S9800, and has resulted in a significant advance

in the concept of state-of-the-art acoustic reproduction. As a result of the

K2®efforts, a loudspeaker system with higher sensitivity and a wider

dynamic range became a reality without power compression or distortion,

even at extremely high drive levels.

The development of the Project Everest DD66000 loudspeaker system was

undertaken as a celebration of JBL’s 60th anniversary and as a realization of

the potential engendered by the breakthroughs discussed above. The stately

character of the Hartsfield, exceptional woodcraftsmanship of the Paragon,

the “built-in acoustics” which treat the enclosure as an extension of the

transducers, and the state-of-the-art transducer technologies that were built up

from two generations of the Project K2 developments were all poured into this

new challenge to extend the acoustic and electrical possibilities in the latest

model of the Project Everest.

Despite its 21st century power and sophistication, Project Everest DD66000

is a synthesis of tradition and technology. It reflects the design, material,

engineering and manufacturing expertise developed and refined through nearly

six decades of experience that are the exclusive legacy of one loudspeaker

builder – JBL.

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