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Related Manuals for JBL 560GTI
Summary of Contents for JBL 560GTI
- Page 1 60TH ANNIVERSARY EDITION 560GTi/660GTi COMPETITION SPEAKER SYSTEMS OWNER’S GUIDE...
- Page 2 INDUSTRY’S MOST ADVANCED TESTING METHODS AND EQUIPMENT, WITH A PANEL OF TRAINED LISTENERS TO SCIENTIFICALLY QUANTIFY AND QUALIFY THE PERFORMANCE OF EVERY JBL SPEAKER TO ENSURE THAT IT EXCEEDS EVEN THE MOST DEMANDING EXPECTATIONS. THE INTRODUCTION OF THE 560GTi AND 660GTi COMPETITION SPEAKER SYSTEMS...
- Page 3 TABLE OF CONTENTS INTRODUCTION ...2 SCIENCE OF JBL SPEAKER DESIGN ...4 PRODUCT FEATURES...6 SYSTEM DESIGN ...10 SPECIFICATIONS ...11...
- Page 4 During this phase of development, the engineers draw intricate diagrams of the proposed speaker’s construction. Once the computerized drawing is complete, it is imported into an analysis program. At JBL, we use extensive Finite Element Analysis (FEA) to model the performance of the speaker’s motor and moving parts.
- Page 5 TESTING At JBL, we spare no expense in testing loudspeakers. Prototype and production samples are first tested for frequency-response range and uniformity in one of our anechoic chambers using MLS and swept sine-wave analyzers. Sine-wave analysis measures harmonic distortion, which is a critical element in determining the sonic accuracy of the speaker.
- Page 6 At its worst, distortion makes speakers sound broken. At more moderate levels, distortion clouds the midrange, making vocals sound muddy and obscuring the music’s detail. At JBL, we’ve had more practice than any other speaker company at eliminating distortion, and it shows. GTi competition speaker systems include the lowest-distortion woofers we’ve ever built.
- Page 7 (see Figure 5). In cars, the boundaries are much closer to the speaker and to the listener, so the intensity of the reflections is more similar to the intensity of the direct sound.
- Page 8 We then compare the sound power to the response in the listening window and plot the directivity index for the speaker system’s frequency response.
- Page 9 THE CROSSOVER: MORE THAN A DIVIDING NETWORK The crossover included in GTi competition speaker systems is more than a set of simple filters. The filter frequencies, slopes and Q values are carefully chosen to provide a phase-aligned transition between woofer and tweeter with optimally flat frequency response at the design axis and throughout the listening window.
- Page 10 SYSTEMS. Many speaker systems are designed for on-axis listening and often include a listening window that’s ±30° from the speaker’s 0° axis. That’s great for home audio or other applications where speakers can be easily pointed at a single listener. In a car, however, the possible speaker mounting locations don’t always allow for on-axis placement even for a single listener.
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Page 11: Specifications
1/12 ft • The GTi competition speaker systems include a choice of grille trim. See Figure 19 to change to the carbon fiber grille trim. - Page 14 560GTi 102mm 4" 138mm 5-7/16" 69mm 2-11/16" 116mm 4-9/16" 312mm 12-1/4" 300mm 11-13/16" 52mm 2-1/16" 660GTi 116.7mm 4-9/32" 160mm 6-5/16" 81.8mm 3-7/32" 128.1mm 5-1/16" 12mm 15/32" 69mm 2-11/16" 41mm 1-5/16" 55mm 2-3/16" 69mm 2-11/16" 32mm 25mm 1-1/4" 1" 51mm 2"...
- Page 15 660GTi 560GTi...
- Page 16 4" (102mm)
- Page 17 560GTi...
- Page 18 660GTi...
- Page 19 THIELE/SMALL 560GTi BL (T DCR (ohms) 3.07 14.84 (sq cm) 86.6 (µm/N) 3.29 (Hz) 0.37 5.49 0.34 1wSPL (dB0) 87.5 SPL 2.83V 91.7 (mm) 15.74 (mm) 4.87 196,000mm (mHz) 660GTi 7.56 3.48 17.94 132.7 9.45 60.8 0.42 10.17 92.6 17.27 5.36...
- Page 20 All rights reserved. Part No. 560/660GTiOM Printed 3/07 JBL is a trademark of Harman International Industries, Incorporated, registered in the United States and/or other countries. Vented Gap Cooling is a trademark of Harman International Industries, Incorporated. Nomex and Kevlar are registered trademarks of E.I. du Pont de Nemours and Company.