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Alte produse JBL: JBL Boxa auto

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Putere nominala 150 W
Putere maxima600 W
Numar cai2
Sensibilitate 91 dB
Gama de frecventa 50 - 30000 Hz

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Boxe auto JBL 660 GTI

160 mm 2 way super performance componment system. External X-over, brown leathern / carbin fiber grilles EOS tweeter waveguide, Neodymium motor structure Master Carton 1, 0.091m3.

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. In a loudspeaker, distortion can be produced by the cone, the motor, the suspension and even the movement of air through the speaker�s assembly. In designing the 560GTi and 660GTi woofers, JBL engineers have left no stone unturned. The basket, polepiece and voice coil former all include vents to eliminate any potential distortion caused by the movement of air trapped within these parts. The ultrarigid Kevlar� cone eliminates unwanted cone flexing (also called modal distortion), which can cause big peaks and dips in the midrange response. The spider and surround are designed to ensure linear forward and rearward motion, minimizing distortion caused by the speaker�s suspension. The motor includes a copper polepiece cap and a flux stabilization ring that work together to produce a linear voice coil inductance that minimizes intermodulation distortion. Finally, an extra-long voice coil ensures that the coil remains in the magnetic gap to minimize distortion at low frequencies and their harmonics, and during high-output transients. The result is crystal-clear midrange, snappy mid-bass without any audible ringing or hang-over, and a smooth frequency response that needs no compensation circuitry in the crossover.

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. In many cases, on-axis placement for two listeners simply isn�t possible because the mounting locations are too close to the listeners to allow a single 60� window to cover both listeners. GTi competition speaker systems incorporate a 35� design axis, which provides an optimal listening window for each front-seat listener.

Controlling the directivity of the tweeter, waveguides contribute two significant improvements to the performance on the GTi Competition Speaker Systems. Waveguides match the directivity of the tweeter to that of the woofer at the crossover by focusing the tweeter�s output into the listening window. Waveguides decrease the directivity of the tweeter at high frequencies through controlled diffraction along the gentle transition from the waveguide�s conical center section to the waveguide�s outside edge. Both of these contributions ensure that the off-axis response reflected by nearby surfaces more closely resembles the response in the optimal listening window. That makes speakers sound better in any environment.

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. Additionally, the tweeter�s high-pass filter circuit includes a level control and frequency contour to optimize the system�s response when the waveguide is used or when the tweeter is conventionally mounted. Capacitor, inductor and resistor types have been selected to minimize distortion and maximize power handling. Air-core coils minimize saturation, which can cause distortion at high input power. Low-loss, low-ESR polypropylene capacitors provide crystal-clear high frequencies, while wire-wound precision resistors with integral heatsink ensure filter stability at high input power. Finally, for systems that will include a separate amplifier channel for each speaker, the GTi competition system crossover includes bi-amp capability.

Power Handling, RMS 150 Watts
Power Handling, Peak 600 Watts
Frequency Response (�3dB) 50Hz - 30kHz
Sensitivity (2.83V @ 1m) 91dB
Impedance 4 Ohms
Mounting Depth 3-1/16" Woofer, 1-5/16" Tweeter
Denumiri similare la Boxa auto JBL 660GTI: 660 GTI

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