Instruction/ maintenance manual of the product S4800 JBL
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S4 800 3- WA Y FLOORST ANDING SPEAKER SYSTEM ® OWNER’S GUIDE S4800 OM 10/11/05 1:51 PM Page 1.
3 PREF ACE 4 CHAPTER 1 – THE S4800 LOUDSPEAKER: A TRIUMPH IN ACOUSTICS AND TECHNOLOGY 8 CHAPTER 2 – UNP ACKING THE S4800 SYSTEM 8 CHAPTER 3 – SELECTING CABLE 9 CHAPTER 4 – AMPLIFIER RECOMMENDA.
PREF ACE T hank you for selecting a JBL ® S4800 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 elec- trical limitations whatsoever .
The new S4800 employs a 3-way , three-driver design, incorporating an ultrahigh- frequency (UHF) com- p ression driver a nd horn to repro- duce high frequencies up to 40kHz.
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.
is attached to a die-cast alu- minum-alloy frame. This provides accurate, rigid support for the motor and cone mounting points, as well as doubling as a massive heatsink by providing a huge sur - face area for heat dissipation. The 1500FE has a central cooling duct that effectively cools the voice coil and reduces the likeli - hood of hot spots.
045TI PURE-TIT ANIUM DIAPHRAGM/ NEOD YMIUM MAGNET UL TRAHIGH-FREQUENCY COMPRESSION DRIVER See Figure 5. The 045T i utilizes the same princi- ples as the 435AL, in a smaller foot - print so that a frequency response up to 40kHz can be achieved.
CHAPTER 2 – UNP ACKING THE S4800 SYSTEM All components of the S4800 sys- tem have been very carefully packed for maximum protection against damage. As with any superior audio product, i t is advisable to keep the original packing materials in case it is n ecessary to transport the S4800 system.
CHAPTER 4 – AMPLIFIER RECOMMENDA TIONS No single type of amplifier is specified for use with the S4800 system. The speakers are highly efficient and will operate ade- qu at ely with an amplifier or receiver of 70–100 watts.
C HAPTER 5 – PLACEMENT AND SETUP CONSIDERA TIONS The S4800 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 c orners.
The S4800 has an HF trim switch mounted on the network panel on the rear of the enclosure. The HF T rim Switch £ adjusts the high-frequency level over the range of approximately 1000Hz to 10kHz. The +1dB position gives the h ighest HF output and measures the most level.
SHORTING STRAPS T he S4800 is shipped with shorting straps installed between its low- f requency and high-frequency terminals. Please see Figure 8. T o prepare the S4800 for bi-wire o peration, these straps must be removed by completely unscrewing each binding-post knob, removing the straps, and replacing the knob.
13 Mod el S 4800 HF - UHF HF - T RIM LF INP UT JBL In cor por ate d, Nor thr idg e, Cal ifo rni a U SA +1d B +0d B –1d B – – Figure 10. Connecting speaker wires using banana plugs.
I n all cases, the left and right amplifiers for each section must be identical. Make sure that the input sensitivity of the amplifier for each section is equal, or that input level controls are provided to maintain the proper low-to-mid/high bal- ance.
CHAPTER 7 – CARE AND MAINTENANCE The S4 80 0 loudspeaker system is sprayed in a polyurethane finish and requires no maintenance o ther than an occasional dusting with a soft, dry , lint-free cotton cloth. The horns may also be wiped with a soft cloth.
C HAPTER 8 – TROUBLESHOOTING AND SERVICE GUIDE S4 80 0 loudspeakers are designed to provide years of trouble-free service. If you are experiencing difficul- ties, we suggest you check these p ossibilities before contacting your J BL specialist dealer for a ssistance.
17 S 4800 SPECIFICA TIONS POWER HANDLING: 300W (RMS)* FREQUENCY RESPONSE: 55Hz – 40kHz (– 6dB) LOW-FREQUENCY EXTENSION: 28Hz (–10dB) SENSITIVITY : 93dB (2.
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.
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PRO SOUND COMES HOME ™ JBL Consumer Products 250 Crossways Park Drive Woodbury , NY 11797 USA 2 route de T ours 72500 Chateau du Loir , France 516.255.4JBL (USA only) www .jbl.com © 2005 Harman International Industries, Incorporated. All rights reserved.
An important point after buying a device JBL S4800 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL S4800 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL S4800 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL S4800 you will learn all the available features of the product, as well as information on its operation. The information that you get JBL S4800 will certainly help you make a decision on the purchase.
If you already are a holder of JBL S4800, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL S4800.
However, one of the most important roles played by the user manual is to help in solving problems with JBL S4800. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL S4800 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
