JBL S4800 Owner's Manual
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JBL S4800 Owner's Manual

JBL S4800 Owner's Manual

3-way floorstanding speaker system
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OWNER'S GUIDE
S4800
3-WAY
FLOORSTANDING
SPEAKER SYSTEM
®

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Summary of Contents for JBL S4800

  • Page 1 OWNER’S GUIDE S4800 3-WAY FLOORSTANDING SPEAKER SYSTEM ®...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PREFACE CHAPTER 1 – THE S4800 LOUDSPEAKER: CHAPTER 2 – UNPACKING THE S4800 SYSTEM CHAPTER 3 – SELECTING CABLE CHAPTER 4 – AMPLIFIER RECOMMENDATIONS CHAPTER 5 – PLACEMENT AND SETUP CONSIDERATIONS CHAPTER 6 – S4800 SWITCH OPERATIONS CHAPTER 7 –...

  • Page 3: Preface

    We have labored to create a loudspeaker system with no acoustical or elec- trical limitations whatsoever. While the S4800 loudspeaker is itself a new development, the goal behind it goes right back to the earliest days of the original James B.

  • Page 4: Chapter 1 - The S4800 Loudspeaker

    Bi-Radial Horn 100˚ Horizontal 60˚ Vertical Curved Dress Panel Spiked Feet Foot Base Figure 1. Cutaway view of S4800 speaker system. drivers are mounted in a unique combination Bi-Radial ® horn struc- ture, precision-molded from JBL’s proprietary SonoGlass ™ material, an...
  • Page 5 Figure 2. Height of S4800 speaker system in relation to listener. The following sections describe the primary features and compo- nents of the S4800 loudspeaker system. The enclosure of the S4800 is specially designed to transfer unwanted mechanical energy away from any acoustically active surfaces, virtually eliminating coloration.
  • Page 6 HIGH-FREQUENCY COMPRESSION DRIVER See Figure 4. The 435AL neodymium high- frequency compression driver is based on the professional JBL 2430 device. It incorporates a rare-earth neodymium magnet structure, designed by extensive computer modeling, including finite element analysis, which combines the attributes of efficiency, strength, low mass and compact size.
  • Page 7 ENCLOSURES The enclosure design of the S4800 minimizes coloration by dramati- cally reducing panel radiation. It is constructed from 1-inch (25mm)- thick MDF. The enclosure’s unusual thickness,...

  • Page 8: Chapter 2 - Unpacking The S4800 System

    Many manufacturers produce audiophile cables worth consider- ing for the S4800. As with all elec- tronics and associated compo- nents, however, every manufacturer offers products of varying quality to suit a range of budgets and applications.

  • Page 9: Chapter 4 - Amplifier Recommendations

    70–100 watts. However, the transient response and audio definition of a high-end system such as the S4800 will pick up all inefficiencies and distortion in an amplifier system. For full- range operation, the S4800 system can be used with an amplifier/ receiver of as little as 30 watts.

  • Page 10: Chapter 5 - Placement And Setup Considerations

    Figure 7. Room placement of S4800 speaker system. area. Verify the integrity of the floor surface before placing and setting up the speakers. See Floor Requirements.

  • Page 11: Chapter 6 - S4800 Switch Operations

    CHAPTER 6 – S4800 SWITCH OPERATIONS The S4800 has an HF trim switch mounted on the network panel on the rear of the enclosure. The HF Trim Switch £ adjusts the high-frequency level over the range of approximately 1000Hz to 10kHz.
  • Page 12 SHORTING STRAPS The S4800 is shipped with shorting straps installed between its low- frequency and high-frequency terminals. Please see Figure 8. To prepare the S4800 for bi-wire operation, these straps must be removed by completely unscrewing each binding-post knob, removing the straps, and replacing the knob.
  • Page 13 (see Figure 11). The optimal method of powering the S4800 system is with two amplifiers, one for the low-fre- quency unit and one for the high- frequency unit. Since each amplifi-...
  • Page 14 • Make sure the HF Trim Switch 2 is correctly set. The system is now ready for use. The S4800 speaker system is fully functional as soon as it is set up. The amplifier power should not exceed 300 watts (RMS). There...

  • Page 15: Chapter 7 - Care And Maintenance

    CHAPTER 7 – CARE AND MAINTENANCE The S4800 loudspeaker system is sprayed in a polyurethane finish and 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 surface very carefully to avoid scratching the finish.

  • Page 16: Chapter 8 - Troubleshooting And Service Guide

    CHAPTER 8 – TROUBLESHOOTING AND SERVICE GUIDE S4800 loudspeakers are designed to provide years of trouble-free service. If you are experiencing difficul- ties, we suggest you check these possibilities before contacting your JBL specialist dealer for assistance. IF THERE IS NO SOUND...

  • Page 17: S4800 Specifications

    S4800 SPECIFICATIONS POWER HANDLING: FREQUENCY RESPONSE: LOW-FREQUENCY EXTENSION: SENSITIVITY: NOMINAL IMPEDANCE: CROSSOVER FREQUENCIES: LOW-FREQUENCY DRIVER: HIGH-FREQUENCY DRIVER: ULTRAHIGH-FREQUENCY DRIVER: DIMENSIONS (H X W X D): WEIGHT: * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks.
  • Page 18 Harman International compa- nies, which includes one of the JBL, Harman International and Bi-Radial are trademarks of Harman International Industries, Incorporated, registered in the United States and/or other countries. SonoGlass, Symmetrical Field Geometry (SFG) and Pro Sound Comes Home are trademarks of Harman International Industries, Incorporated.
  • Page 19 NOTES:...
  • Page 20 PRO SOUND COMES HOME ™ JBL Consumer Products 250 Crossways Park Drive Woodbury, NY 11797 USA 2 route de Tours 72500 Chateau du Loir, France 516.255.4JBL (USA only) www.jbl.com © 2005 Harman International Industries, Incorporated. All rights reserved. Part No. 361054-001...

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