Project EVEREST DD66000 Project EVEREST DD66000 Product Commentaries and User Guide Thank you for purchasing Project EVEREST DD66000 loudspeaker system. Before using the system, please take time to read through this user guide to understand well on this product and also to use it properly.
User's Guide Table of Contents Chapter 1 Preface Chapter 2 Legacy Chapter 3 Project EVEREST DD66000 Chapter 4 Unpacking Chapter 5 Selecting Cable Chapter 6 Amplifier Recommendations Chapter 7 Placement and Set-up Considerations Chapter 8 Switch Operations Chapter 9 Connections Chapter 10 Care and Maintenance Chapter 11 Troubleshooting and Service Guide Chapter 12 Ownership Register Chapter 13 Project EVEREST DD66000 Specifications
Project EVEREST DD66000 CHAPTER 1 Preface JBL wishes to thank you for selecting a Project EVEREST DD66000 loudspeaker system. It represents the sum total 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 loudspeaker is itself a new development, the goal behind it goes right back to the earliest days of the original James B.
CHAPTER 2 Legacy - the historical development of the JBL Project loudspeakers Of those few who seek perfection in sound reproduction, only a handful have actually achieved it. The price is always high. It is a rare occurrence indeed when an individual or group is able to triumph over the constraints of economic and technological reality just once. At JBL, this has happened eight times. In each case, its engineers were told to build the speaker system they had always wanted to build.
Project EVEREST DD66000 In this respect, Project EVEREST DD66000 is at once the most advanced and sophisticated loudspeaker in the world today and a speaker whose technology is deeply rooted in over 60 years of tradition. JBL's president in 1954, Willia m Thomas, described the Hartsfield as "...the speaker system we have always wanted to build ... the finest components ever made available to serious listeners .
Since Project Everest was introduced, sound recording and playback technology has undergone a revolution of its own. With the advent of CD, extremely demanding recorded signals had become the rule rather than the exception - the average source material used by the typical audio enthusiast had become superior to the best demonstration material of even just a few years ago. In overall dynamics and transient response, transducers are once again a potential weak link in the high-end audio reproduction chain.
Project EVEREST DD66000 As an outcome of the K2 development, a loudspeaker system with higher sensitivity and wider dynamic range became reality without power compression or distortion even at an extremely high drive level. The development of the Project EVEREST DD66000 loudspeaker system was started as a celebration of JBL’s 60th Anniversary and as a realization of the above-mentioned potentials .
CHAPTER 3 The Project EVEREST DD66000 loudspeaker: a triumph in acoustics and technology The following sections describe the primary features and components of the Project EVEREST DD66000 loudspeaker system. The basic system configuration is what JBL has historically referred to as an augmented 2-way. In the 1950’s and 1960’s JBL built primarily 2-way systems with a 12” or 15” woofer crossed over to a large format compression driver/horn combination.
Project EVEREST DD66000 The transducers, horns and crossover networks are housed in a visually stunning enclosure that is reminiscent of both the Hartsfield and Paragon systems. The specially curved baffle provides the sidewalls for the main horn. The top and bottom horn flares are accomplished by the attachment of precision molded SonoGlass™ horn “lips” to the upper enclosure surface. The UHF driver is mounted to a SonoGlass™ horn which is itself mounted to the back of the die cast aluminum housing.
TRANSDUCERS The 1501AL Low Frequency Driver See Figure 2 The 1501A L Low Frequency driver is very similar to the 1500A L used in the S9800 system. It incorporates a new high impedance voice coil to allow a pair of woofers to be used while still maintaining an 8 ohm system impedance. The voice coil length has been increased to 30.5 mm (from 20.3 mm) and its milling width has been reduced slightly.
Project EVEREST DD66000 even-order distortion components. All suspension elements are tailored for maximum mechanical displacement linearity. The cone is comprised of a special layered paper pulp matrix with proprietary Aquaplas ™ damping which offers more pistonic behavior throughout the woofer’s operating bandwidth, and controlled cone breakup beyond it. A thick wall, cast aluminum frame is used to rigidly support the motor structure.
A high purity copper sleeve is used for the pole piece. This greatly improves the electrical conductivity of the copper sleeve for lower coil inductance and thus greater high frequency output at 15 kHz and above. The copper sleeved pole quickly wicks away heat generated by the coil and contributes in reduction of dynamic power compression.
Project EVEREST DD66000 These features, when taken as a whole, create a new large format compression driver with the greatest high frequency extension, lowest distortion, smoothest response and greatest sonic detail. 045Be-1 Ultra-High Frequency Compression Driver and Horn Like the 045Be, the 045Be -1 uses a 25-mm beryllium diaphragm and 50-mm neodymium magnetic structure. The pure beryllium diaphragm is less than 0.04 mm thick and has a mass of only 0.1 gram.
Internal Crossover Network The circuit topology, combined with the acoustic behavior of the 1501A L and 476Be provides a 24 dB-per-octave transition at 700 Hz. This is the primary crossover point of the system. Additionally, the 045Be-1 is turned on above 20 kHz to provide extended response to beyond 50 kHz. A second 1501A L woofer is used from below 30Hz to around 150 Hz at which point it is gently rolled off at 6 dB-per-octave.
Project EVEREST DD66000 CHAPTER 4 Unpacking the Project EVEREST DD66000 System All components of the Project EVEREST system have been very carefully packed for maximum protection against damage. As with any superior audio product, it is advisable to keep the original packing materials in case it is necessary to transport the Project EVEREST system. Because of the bulk and weight of this loudspeaker, at least two people are required to unpack it in the following manner.
VI. VII. VIII. Cut tapes at the corners of the bottom cardboard (drawing VI), slide out the loudspeaker system toward you together with bottom endpads (drawing VI-2). Lift the system slightly on the right and left in turn to remove bottom endpads. Remove the protective non-wovens. VI VI-2 VII VIII Products are shipped with round-tipped spikes on the bottom of the cabinet.
Project EVEREST DD66000 CHAPTER 5 Selecting Cable Speaker wire and interconnecting cables are an important component in any audio system. With a system such as the Project EVEREST, they assume a new level of criticality. The Project EVEREST loudspeakers are internally wired with proprietary high quality copper cable s, specially designed for JBL.
CHAPTER 6 Amplifier Recommendations No single type of amplifier is specified for use with the Project EVEREST DD66000 system. The speakers are highly efficient and will operate adequately with an amplifier or receiver of 70-100 watts. However, the transient response and audio definition of a high-end system such as Project Everest DD66000 will pick up all inefficiencies and distortion in an amplifier system.
Project EVEREST DD66000 CHAPTER 7 Placement and Set-up Considerations The Project EVEREST DD66000 loudspeaker system is designed to be less affected by room acoustics than conventional imaging systems. However, it is very sensitive to overall symmetry, proximity to walls, ceilings and corners. Ideally, any listening room should contain a combination of live surfaces (e.g., walls and windows) and absorbent surfaces (e.g., drapes, carpets, upholstery).
fast and sharp bass. The low frequency alignment feature enables placing the speakers near or even in a corner without producing an over-abundance of bass. This corner placement ability allows optimum performance even in small rooms . Find the most suitable point by using various source materials. The Project EVEREST DD66000 requires right or left speaker designation, depending on installed locations.
Project EVEREST DD66000 CHAPTER 8 Project EVEREST DD66000 Switch Operations The EVEREST DD66000 has 2 control panels under the cover at the center bottom of the front baffle. Shorting bars or switches inside the control panel enable to switch orientation of the system and biamplifier and also to adjust woofer and high-frequency levels. They also provide access to the 9-volt batteries used for capacitor bias.
receives the low and which woofer receives the midrange signals. One system should be set to “left” and be positioned as the left speaker system. The other system should be set to “right” and be positioned as the right speaker. HF Drive / LF Drive This allows to switch normal drive using a set of amplifiers and bi-amp drive using 2 sets of amplifiers. Move the shorting bar only in case of bi-amp driving.
Project EVEREST DD66000 HF Level This switch adjusts the attenuation applied to the 476Be (high frequency or HF unit) by approximately 0.5 dB over the range of 1,000 Hz to about 8,000 Hz. The action is accomplished by trimming the main attenuation resistors. Mid-range sound becomes calm by reducing level and brighter by increasing level. No addit ional parts are inserted in the signal path and there is no sonic deterioration by position or adjustment functions.
Battery Installation The network of this system utilizes the proprietary JBL “charge-couple method” to activate capacitors by applying DC bias using battery and this eliminates unwanted distortions. Please refer to procedures below and install the supplied batteries on the battery holders. Battery Installation Procedures: 1. Remove the control panel cover at the bottom of the front baffle. (refer to figures in Chapter 8) 2. Remove the package film from batteries and 3.
Project EVEREST DD66000 resistor (2.2 MO) and thus, draws no appreciable current. The expiration date printed on the battery generally coincides with the need to replace the batteries. Each capacitor position is actually made up of two capacitors connected in series. The battery voltage is applied to the center connection of the two capacitors. This produces a voltage potential between the two plates within the capacitor.
CHAPTER 9 Project EVEREST DD66000 Connections Caution: Turn all amplifiers off before connecting or disconnecting Project EVEREST DD66000 loudspeakers. Making connections while an amplifier is operating could seriously damage the loudspeaker system and void the warranty. All amplifiers must also be turned off before connecting or disconnecting cables at the amplifier or preamplifier inputs.
Project EVEREST DD66000 bi-wire and bi-amp connections. Read the following explanations and connect in the suitable method. I. Passive Connecting Method The passive method requires one amplifier and one set of wires. Connections are made to either the upper terminals or the lower terminals . Do not remove the shorting straps. II. Bi-Wire Connecting Method The bi-wire connection method requires one amplifier and two sets of speaker wires.
banana-type connector is recommended. As mentioned earlier, the Project EVEREST DD66000 loudspeakers may be connected to the amplifier(s) by one of three methods: passive, bi-wire and bi-amp. Each method, described above, has its own advantages, and the Project EVEREST DD66000 loudspeaker system will deliver superb performance with all methods. Final Checklist: • Connect and plug in all other system electronics. • Check all connections.
Project EVEREST DD66000 CHAPTER 10 Project EVEREST DD66000 Care and Maintenance The Project EVEREST DD66000 loudspeaker system requires no maintenance other than an occasional dusting with a soft, dry, lint-free cotton cloth. The horns may also be wiped with a soft cloth. Treat the lacquered surface very carefully to avoid scratching the finish. To remove fingerprints and smudges, apply a small amount of diluted ammonia -free or alcohol-free neutral detergent to the cloth and gently clean the surface.
CHAPTER 11 Troubleshooting and Service Guide Project EVEREST DD66000 loudspeakers are designed to provide years of trouble-free service. No maintenance is required. If a problem occurs, make sure that all connections are properly made and clean. If a problem exists in one loudspeaker, reverse the speaker wires to the left and right system. If the problem remains in the same speaker, then the fault is in the loudspeaker. In this event, consult the Project EVEREST DD66000 specialist dealer for assistance.
Project EVEREST DD66000 CHAPTER 12 The Project EVEREST DD66000 Register In purchasing a Project EVEREST DD66000 loudspeaker system, you have joined a privileged group of music lovers who have sought, and finally found, a system that will reproduce sound to a level of perfection of which no other system in the world is capable. JBL has established the Project EVEREST DD66000 Register so that we can provide aftersales services and maintain an ongoing dialog with all Project EVEREST DD66000 system owners.
CHAPTER 13 The Project EVEREST DD66000 System Specifications Low Frequency Driver : 380mm (15”) Pulp-Cone Woofer (1500AL) x 2 High Frequency Driver : 100mm (4”) Beryllium Compression Driver (435Be) Ultra-High Frequency Driver : 25mm (1”) Beryllium Compression Driver (045Be) Power Handling (RMS) : 500W Frequency Response (-6dB) : 45Hz – 50kHz Low Frequency Extension (-10dB) : 32Hz Nominal Impedance : Sensitivity (2.83V@1m) : 8 ohms nominal 5.5 ohms @ 85Hz 3.
Project EVEREST DD66000 JBL and Harman International JBL is part of the Harman International audio companies, a group with a common purpose: combining technology with a love of music to manufacture audio products that provide new levels of satisfaction, performance and value. To promote diversity and creativity, JBL operates independently in research and development.