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JBL Century Gold manual

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Table of contents for the manual

  • Page 1

    LIMITED EDITION LOUDSPEAKER SYSTEM Centur y Gold A NEW ST ANDARD FOR A NEW CENTUR Y final cg om 5-15 7/20/98 1:15 PM Page 14[...]

  • Page 2

    This certifies that this Century Gold is a Limited Edition Reference Bookshelf Loudspeaker System , in celebration of JBL ’ s 50th Anniversary . Genuine JBL Greg T imbers Senior Acoustic Engineer C E L E B R A T I N G 5 0 Y E A R S Century Gold Loudspeaker System final cg om 5-15 7/20/98 1:15 PM Page 13[...]

  • Page 3

    JBL is part of the Harman International family of 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, perfor- mance and value. T o promote diversity and creativity , JBL operates independently in research and development. When it comes to tr[...]

  • Page 4

    JBL wishes to thank you for selecting the Century Gold loudspeaker system. While the Century Gold loudspeakers are a new development, the ideas behind them go back to the earliest days of JBL. This system is a definitive expression of JBL ’ s quality and craftsmanship. W e have spared no effort, overlooked no performance factor necessary to prod[...]

  • Page 5

    No. 3 The Limited Edition Century Gold Bookshelf Loudspeakers set a new standard for a new century . JBL combines the most advanced technology with a classic JBL design. These speakers continue the longstanding tradition of precise studio monitor sound for which JBL is famous. Y ou will enjoy the benefits of pure titanium dome high-frequency trans[...]

  • Page 6

    The Century Gold also features an all-new 5" (127mm) mid-frequency transducer developed specifically for the Century Gold (Figure 2). The voice coil is 2" (50mm) in diameter and wound on edge from flat aluminum ribbon wire to a depth of precisely .4" (11mm) on a thermoset composite ™ form. The cone is made of Kevlar ® with a com[...]

  • Page 7

    The job of the dividing network is to distribute the various frequencies to their respective transducers. The network is also designed to complement component location on the baffle. Slopes are chosen to match the exact response of each driver in its respective frequency range, as well as to ensure that the high-frequency transducers are adequatel[...]

  • Page 8

    The battery should be replaced approximately every 2 years. This is accomplished as follows: • Unscrew the two screws that hold the battery access cover in place. It is located on the upper portion of the dividing network, on the rear of the speaker enclosure (Figure 4). • W rite today’ s date, including the year , in this manual. • Install[...]

  • Page 9

    Ideally the systems should be placed at least three feet from any walls. The height, at the top of the midrange, should be at ear level. The two speakers should be equidistant from your primary listening position; the distance should be determined by the distance between the speakers. W e recommend that the angle between the speakers, at the listen[...]

  • Page 10

    The Century Gold loudspeakers can be connected by one of several methods. The binding posts on the rear panel of the Century Gold will accept most types of audio cable and connectors, including banana plugs and bare wire (Figure 6). Follow the hookup method that best describes your system. 1. For each channel, connect the red (+) terminal on the Ce[...]

  • Page 11

    The Century Gold’ s outer connection panel and internal dividing network are designed so that separate sets of speaker cable can be attached to the low-frequency transducer and midrange/high-frequency transducer portions of the dividing network. This is called bi-wiring. Bi-wiring can provide several sonic advantages and considerably more flexib[...]

  • Page 12

    Figures 8 through 10 show two bi-wiring options, single stereo amplifier and dual stereo amplifier modes. For passive and bi-wire connections, set the switch to the Normal/Bi-W ire position (Figure 8a). 1. The external “strapping bars” that normally connect the Century Gold’ s low-frequency and high-frequency terminals must be removed befor[...]

  • Page 13

    The optimal method of powering the Century Gold system is with two amplifiers, one for low frequencies and one for the mid/high frequencies . It is necessary to use a high-quality active crossover module. Since each amplifier only drives a limited frequency range, this method allows the user to select amplifiers with the desired sonic character [...]

  • Page 14

    The Century Gold loudspeaker systems have an oiled finish. Cleaning should be done with an untreated dust cloth. Do not use conventional furniture waxes and polishes, which are not designed for oiled finishes. If touch-up is necessary or the finish appears to be drying out, the surface may be re-oiled with a commercially available oil-finishing[...]

  • Page 15

    No. 13 Frequency Response: 50Hz – 20kHz ± 1.5dB 38Hz – 22kHz – 6dB Sensitivity: 90dB for 2.83V @ 1 meter Recommended Maximum 200 watts continuous Power Handling: 800 watts peak Nominal Impedance: 6 ohms Crossover Frequencies: 600Hz, 2800Hz Low-Frequency T ransducer: Century 1200 Mid-Frequency T ransducer: Century 500 High-Frequency T ransduc[...]

  • Page 16

    Introduction 2 Low-Frequency T ransducer 3 Mid-Frequency T ransducer 4 High-Frequency T ransducer 4 Dividing Networks 5 Battery Replacement 6 Placement 7 Speaker Connections 8 Maintenance and Service 12 System Specifications 13 JBL Consumer Products 8 0 Crossways Park W est, W oodbury , NY 11 797 8 5 00 Balboa Boulevard, Northridge, CA 91 329 1-80[...]