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- DD66000CH-EVEREST II [DD66000CH]
- User Manual
JBL DD66000CH-EVEREST II [DD66000CH] User Manual
Summary of DD66000CH-EVEREST II [DD66000CH]
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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..
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Project everest dd66000 3 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 connection...
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Project everest dd66000 5 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 ele...
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Project everest dd66000 7 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 triu...
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8 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 roote...
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Project everest dd66000 9 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 mor...
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10 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 ...
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Project everest dd66000 11 chapter 2 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 historically has refe...
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12 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 prec...
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Project everest dd66000 13 the 1501al and 476be are both designed to be absolute-minimum-distortion drive units. Although they are capable of tremendous acoustic output, they are designed to be completely linear in every way, up to a reasonable drive level. This enables the system to sound the same,...
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14 figure 2 – 1501al section view the 1501al low-frequency driver is a 15-inch (380mm)-diameter device with a 4-inch (100mm) voice coil completely immersed in a radial field generated by an alnico 5dg magnet. Alnico was chosen because of its stable operating point. This material is insensitive to te...
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Project everest dd66000 15 a thick-wall, cast-aluminum frame is used to rigidly support the motor structure. This fully vented frame and motor design also serves to minimize the back pressure under the dome and spider, helping to reduce harmonic distortion to even lower levels. Jbl’s vented gap cool...
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16 a high-purity copper sleeve is used for the polepiece. This greatly improves the electrical conductivity of the copper sleeve for lower coil inductance and thus greater high-frequency output at 15khz and above. The copper-sleeved pole quickly wicks away heat generated by the coil, thereby contrib...
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Project everest dd66000 17 045be-1 ultrahigh-frequency compression driver and bi-radial horn like the original 045be, the 045be-1 uses a 1-inch (25mm) beryllium diaphragm and 2-inch (50mm) neodymium magnetic structure. The pure- beryllium diaphragm is less than 0.04mm thick and has a mass of only 0....
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18 internal crossover network the circuit topology, combined with the acoustic behavior of the 1501al and 476be, provides a 24db-per-octave transition at 700hz. This is the primary crossover point of the system. Additionally, the 045be-1 is turned on above 20khz to provide extended response to beyon...
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Project everest dd66000 19 chapter 3 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...
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20 vi. Cut tapes at the corners of the bottom cardboard (drawing vi), slide the loudspeaker system out toward you, together with bottom endpads (drawing vi-2). Vii. Lift the system slightly on the right and left, in turn, to remove the bottom endpads. Viii. Remove the protective wrapping. Vi vi-2 vi...
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Project everest dd66000 21 chapter 4 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 importance. The project everest loudspeakers are internally wired with proprietary, high-...
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22 sections may yield excellent results. Whatever wires are used, be sure that the low-frequency wires are as short as possible, and the left and right wires for each section are the same length. To ensure a secure connection, we recommend y- or u-type plugs..
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Project everest dd66000 23 chapter 5 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 ...
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24 a separate crossover network (not included) should be connected directly to the low- and high-frequency amplifiers driving this system, and is required if the system is to be bi-amplified..
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Project everest dd66000 25 chapter 6 placement and setup 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 and proximity to walls, ceilings and corners. ...
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26 the project everest dd66000 requires right or left speaker designation, depending on installed locations. Once speaker locations are decided upon, please refer to system orientation in chapter 7, in order to set it up. Caution: project everest dd66000 is a massive system, consisting of materials ...
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Project everest dd66000 27 chapter 7 project everest dd66000 switch operations the dd66000 has two control panels under the cover at the center bottom of the front baffle. Shorting bars or switches inside the control panel allow you to switch orientation of the system, engage bi-amplification if des...
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28 sound will result from staggering the bars. The bars select which woofer receives the low-frequency signals and which woofer receives the midrange signals. One system should be set to “left” and positioned as the left speaker system. The other system should be set to “right” and positioned as the...
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Project everest dd66000 29 hf level this switch adjusts the attenuation applied to the 476be (high-frequency unit) by approximately 0.5db over the range of 1,000hz to about 8,000hz. The action is accomplished by trimming the main attenuation resistors. Midrange sound becomes softer by reducing the l...
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30 battery installation the network of this system utilizes the proprietary jbl “charge-couple method” to activate capacitors by applying dc bias using battery power; this eliminates unwanted distortions. Please refer to procedures below and install the supplied batteries in the battery holders. Bat...
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Project everest dd66000 31 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 pote...
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Project everest dd66000 33 chapter 8 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. A...
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34 project everest dd66000 terminals are also designed to accept spade- or banana-type connectors, which are fastened to the ends of the wires and, in turn, are attached to the terminal posts. Two sets of input terminals of project everest dd66000 are designed for use with bi-wire and bi-amp connect...
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Project everest dd66000 35 • in case shorting straps are used, make sure the conductors and sleeves of the straps are firmly fastened at the terminals. • for the best connection, a cable termination with either a spade- or banana- type connector is recommended. As mentioned earlier, the project ever...
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Project everest dd66000 37 chapter 9 project everest dd66000 care and maintenance the project everest dd66000 loudspeaker system requires no maintenance other than occasional dusting with a soft, dry, lint-free cotton cloth. The horns may also be wiped with a soft cloth. Treat the lacquered surface ...
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Project everest dd66000 39 chapter 10 troubleshooting and service guide project everest dd66000 loudspeakers are designed to provide years of trouble-free service. No maintenance, aside from occasional battery replacement, is required. If a problem occurs, make sure that all connections are properly...
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Project everest dd66000 41 the project everest dd66000 system specifications low-frequency driver 15" (380mm) pulp-cone woofer (1501al) x 2 high-frequency driver 4" (100mm) beryllium compression driver (476be) ultrahigh-frequency driver 1" (25mm) beryllium compression driver (045be-1) maximum recomm...
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42 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 variety and creativity, jbl opera...