JBL S4800 - Manuals

JBL S4800 – Manual in PDF format online.

Manuals:

Manual

Manual JBL S4800

Summary

Page 2 - TABLE OF CONTENTS

3 PREFACE 4 CHAPTER 1 – THE S4800 LOUDSPEAKER: A TRIUMPH IN ACOUSTICS AND TECHNOLOGY 8 CHAPTER 2 – UNPACKING THE S4800 SYSTEM 8 CHAPTER 3 – SELECTING CABLE 9 CHAPTER 4 – AMPLIFIER RECOMMENDATIONS 10 CHAPTER 5 – PLACEMENT AND SETUP CONSIDERATIONS 11 CHAPTER 6 – S4800 SWITCH OPERATIONS 11 CONTROLS AND...

Page 3 - PREFACE; Thank you for selecting a JBL

PREFACE Thank you for selecting a JBL ® S4800 loudspeaker system. It represents the sum total of ourresearch and developmentalefforts in sound reproduction overthe last half-century. We havelabored to create a loudspeakersystem with no acoustical or elec-trical limitations whatsoever. Whilethe S4800...

Page 4 - Figure 1. Cutaway view of S4800 speaker system.

The new S4800 employs a 3-way,three-driver design, incorporatingan ultrahigh-frequency (UHF) com-pression driver and horn to repro-duce high frequencies up to 40kHz.With the UHF handling the ultrahighfrequencies, the high-frequency(HF) transducer could then beupgraded to a new design using a3-inch d...

Page 5 - Figure 2. Height of S4800 speaker system in relation to listener.

The following sections describethe primary features and compo-nents of the S4800 loudspeakersystem. The enclosure of the S4800 is specially designed to transferunwanted mechanical energyaway from any acoustically activesurfaces, virtually eliminating coloration. The massive enclosure, along with its...

Page 7 - ENCLOSURES; Figure 5. Cutaway view of 045Ti ultrahigh-frequency transducer.

045TI PURE-TITANIUMDIAPHRAGM/NEODYMIUM MAGNETULTRAHIGH-FREQUENCYCOMPRESSION DRIVER See Figure 5. The 045Ti utilizes the same princi-ples as the 435AL, in a smaller foot-print so that a frequency responseup to 40kHz can be achieved. INTERNAL CROSSOVERNETWORK Each loudspeaker unit has twointernal divi...

Page 8 - CHAPTER 2 – UNPACKING THE S4800 SYSTEM; end; CHAPTER 3 – SELECTING CABLE

CHAPTER 2 – UNPACKING THE S4800 SYSTEM All components of the S4800 sys-tem have been very carefullypacked for maximum protectionagainst damage. As with any superior audio product,it is advisable to keep the originalpacking materials in case it is necessary to transport the S4800system. Because of th...

Page 9 - power versus frequency

CHAPTER 4 – AMPLIFIER RECOMMENDATIONS No single type of amplifier is specified for use with the S4800system. The speakers are highlyefficient and will operate ade-quately with an amplifier or receiver of 70–100 watts. However, the transient responseand audio definition of a high-endsystem such as th...

Page 10 - FLOOR REQUIREMENTS; Figure 7. Room placement of S4800 speaker system.

CHAPTER 5 – PLACEMENT AND SETUP CONSIDERATIONS The S4800 loudspeaker system isdesigned to be less affected byroom acoustics than conventionalimaging systems. However, it isvery sensitive to overall symmetry,and proximity to walls, ceilings andcorners. Ideally, any listening room shouldcontain a comb...

Page 11 - HF Trim Switch; adjusts the; HF Trim; be tested in its various; CHAPTER 6 – S4800 SWITCH OPERATIONS; CONTROLS AND; INPUT; JBL Incorporated, Northridge, California USA

The S4800 has an HF trim switchmounted on the network panel on the rear of the enclosure. The HF Trim Switch £ adjusts the high-frequency level over therange of approximately 1000Hz to10kHz. The +1dB position gives thehighest HF output and measuresthe most level. 0dB reduces the HFlevel by 1dB, and ...

Page 12 - SHORTING STRAPS; Turn all amplifiers off; Mod; LF; Removing shorting straps.

SHORTING STRAPS The S4800 is shipped with shortingstraps installed between its low-frequency and high-frequency terminals. Please see Figure 8. To prepare the S4800 for bi-wireoperation, these straps must beremoved by completely unscrewingeach binding-post knob, removingthe straps, and replacing the...

Page 13 - When using separate high-

13 Mod el S4 800 HF - U HF HF - TR IM LF INP UT JBL Inco rpor ated , No rthri dge , Ca lifor nia USA +1d B +0d B –1d B –– Figure 10. Connecting speaker wiresusing banana plugs.(Passive Connection Method) Mod el S4 800 HF - U HF HF - TR IM LF INP UT JBL Inco rpor ated , No rthr idge , Ca lifor nia US...

Page 14 - Input polarity must be the; THE WOOFER GRILLE; • Connect and plug in all other

In all cases, the left and rightamplifiers for each section must beidentical. Make sure that the inputsensitivity of the amplifier for eachsection is equal, or that input levelcontrols are provided to maintainthe proper low-to-mid/high bal-ance. If two identical stereo ampli-fiers are used, one may ...

Page 15 - CHAPTER 7 – CARE AND MAINTENANCE; Never

CHAPTER 7 – CARE AND MAINTENANCE The S4800 loudspeaker system issprayed in a polyurethane finishand requires no maintenanceother than an occasional dustingwith a soft, dry, lint-free cottoncloth. The horns may also be wiped witha soft cloth. Treat the surface verycarefully to avoid scratching thefin...

Page 16 - CHAPTER 8 – TROUBLESHOOTING AND SERVICE GUIDE

CHAPTER 8 – TROUBLESHOOTING AND SERVICE GUIDE S4800 loudspeakers are designedto provide years of trouble-freeservice. If you are experiencing difficul-ties, we suggest you check thesepossibilities before contactingyour JBL specialist dealer forassistance. IF THERE IS NO SOUNDFROM ANY OF THESPEAKERS:...

Page 18 - Styrofoam is a trademark of The Dow Chemical Company.; JBL AND HARMAN INTERNATIONAL

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. Monst...

Page 20 - JBL Consumer Products

PRO SOUND COMES HOME ™ JBL Consumer Products 250 Crossways Park Drive Woodbury, NY 11797 USA 2 route de Tours72500 Chateau du Loir, France 516.255.4JBL (USA only) www.jbl.com © 2005 Harman International Industries,Incorporated. All rights reserved. Part No. 361054-001 ® S4800 OM 10/11/05 1:51 PM Pag...