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JBL Project EVEREST DD66000 User Manual

Jbl project everest dd66000 owner's manual
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Project EVEREST DD66000
DD66000
Project EVEREST
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.

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Summary of Contents for JBL Project EVEREST DD66000

  • Page 1 Project EVEREST 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.
  • Page 2 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...
  • Page 3 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.
  • Page 4 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. Whatever resources were required would be made available.
  • Page 5 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 ...
  • Page 6 In overall dynamics and transient response, transducers are once again a potential 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 puritan simplicity of a two-way system was considered the most promising design track.
  • Page 7 K2 developments are poured into this new challenge to the acoustical and electrical limitations in the second model of the Project Everest. Despite its power and sophistication, Project EVEREST DD66000 is a marriage of tradition and technology. It reflects the design, material, engineering and manufacturing expertise derived and refined through nearly six decades of experience that are the exclusive province of one loudspeaker builder: JBL.
  • Page 8 Above 700 Hz, the HF compression driver and horn combination operates unassisted all the way to 20 kHz. (Fig.1) Figure 1 – On-Axis response of the DD66000 system and that of each of the transducers through its crossover network. (2.83V @ 1m)
  • Page 9 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™...
  • Page 10 Alnico 5DG magnet. Alnico was chosen because of its stable operating point. This material is insensitive to temperature changes and back EMF from the coil. JBL has overcome the tendency of Alnico to demagnetize with high drive by utilizing a massive shorting ring at the base of the motor assembly.
  • Page 11 This fully vented frame and motor design also serves to minimize the backpressure under the dome and spider, which helps to reduce harmonic distortion to even lower levels. JBL’s Vented Gap Cooling (VGC) is incorporated within the motor structure, and lowers the operating temperature of the coil during moments of high power operation.
  • Page 12 Neodymium. The Phasing plug is of JBL’s traditional Rapid Flare, Coherent Wave 4-slot design. This Coherent Wave design shapes the wave output producing a truly coincident wave front as the sound enters the horn.
  • Page 13 0.1 gram. The single layer aluminum ribbon voice coil is wound without a former and attached directly to the diaphragm. The driver employs the smallest annular slit phasing plug that JBL has ever designed. The 045Be-1 has been redesigned to improve manufacturing yield and consistency.
  • Page 14 As a result, the speed and power of the DD66000 system is unmatched from the lowest to the highest frequencies.
  • Page 15 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.

  • Page 16: Grille Removal

    Grille Removal The EVEREST DD66000 is shipped with its grille on the system. You can remove the grille in the following procedures. Step 1: Hold the lower parts of the grille with both hands and pull it up.
  • Page 17 The Project EVEREST loudspeakers are internally wired with proprietary high quality copper cable , specially designed for JBL. The same care that was given to the selection of internal system wiring should be afforded to the selection and application of the cables that will connect Project EVEREST loudspeakers to other system components.
  • Page 18 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. For full-range operation, the Project Everest DD66000 system should not be used with an amplifier/receiver of less than 100 watts.
  • Page 19 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).
  • Page 20 Floor Requirements The floor in the location selected for setting up the Project EVEREST DD66000 speakers must be capable of supporting a load of 140 kg (308 lbs). Because of the coupling effect of the stainless steel feet, a flat, hard surface such as wood or linoleum is preferable.
  • Page 21 However, if you screw too strong, there is a risk of damaging the terminals themselves. Please use the supplied hexagonal driver and tighten screws with reasonable torque. The Project EVEREST DD66000 can set up and adjust the following by using the above procedures. System Orientation The two low frequency drivers operate over different ranges as described earlier.
  • Page 22 Duplicating these shapes will result in the same frequency response and directivity pattern as a passive DD66000. The low pass is made up of two cascaded second order sections and the high pass is a single high pass section.
  • Page 23 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.
  • Page 24 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.
  • Page 25 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.
  • Page 26 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. 2 sets of input terminals of Project EVEREST DD66000 are compatible with...
  • Page 27 If the amplifiers are connected to the Project EVEREST DD66000 loudspeakers in the bi-wire or bi-amp mode with the shorting straps still on, the amplifier outputs will be shorted which could result in costly amplifier damage when power is switched on.
  • Page 28 Make sure the system orientation and HF/LF drive switching in the control panel are correctly set. The system is now ready for use. The Project EVEREST DD66000 loudspeaker system is fully functional as soon as it is set up. There may be subtle tonal changes in bass output over the first week to 10 days of operation.
  • Page 29 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.
  • Page 30 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.
  • Page 31 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.
  • Page 32 CHAPTER 13 The Project EVEREST DD66000 System Specifications Low Frequency Driver : High Frequency Driver : Ultra-High Frequency Driver : Power Handling (RMS) : Frequency Response (-6dB) : Low Frequency Extension (-10dB) : Nominal Impedance : Sensitivity (2.83V@1m) : Horn Directivity (horizontal x vertical) :...
  • Page 33 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.