Rating Content :
GTO939 is rated 5.0 out of 5 by 1.
359969390694761
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JBL® GTO Series of high-fidelity automotive speakers feature innovative technologies that we’ve engineered for the environment and conditions in today’s cars to help them deliver exceptional sound. Using the patented Plus One® woofer-cone technology and rugged construction materials such as carbon composite frames, butyl rubber surrounds and fabric tweeter diaphragms, plus UniPivot™ (U.S. patent no. 6,002,780) tweeter positioning on select coaxial models and the I-Mount™ (U.S. patent no. 5,859,917) system for the tweeters in the component separates, GTO Series automotive speakers are the ideal upgrade for any car’s audio system.

What's In The Box

  • 2 GTO 939 loudspeakers
  • 2 protective grilles
  • Owner’s/installation manual

Product Specs, Manuals & Compatibility

Compatible with TVs, Laptops, and Mobile devices
Manuals & Downloads
General Specifications
Size
6" x 9"
Type
Three-Way
Audio Specifications
Power Handling (RMS)
5W-200W
Sensitivity
(2.83V/1m) 94dB
Frequency Response
46Hz-21kHz
Power Handling (Peak)
300W
Nominal Impedance
3 ohms
Dimensions
External Diameter (in)
9-9/16
External Diameter (mm)
243
Mounting Cutout Diameter (in)
8-5/8
Mounting Cutout Diameter (mm)
219
Mounting Depth (in)
2-13/16
Mounting Depth (mm)
71
Warranty
USA Warranty Length
1 Year Warranty
Product Features
25 – 300 watts suggested amplifier power range
JBL engineers designed the GTO 939 speaker to produce strong, clear sound from a head-unit or amplifier capable of delivering up to 300 watts of power. This makes the GTO 939 an ideal match to systems powered with head-unit or factory-amplifier power levels, or even with many of the GTO Series amplifier combinations to help keep up with systems that feature one or more subwoofers. And its great power-handling specifications also increase reliability over the lifetime of the speaker.
Patented Plus One woofer-cone technology
The GTO 949’s Plus One carbon-injected cones provide more overall speaker cone area than others in the class. With an effective increase in cone area, the speaker radiates more air. Also, the carbon-injected cone material produces a lighter and stiffer cone. The result is a better low-frequency response and a greater ability to make those important musical notes that people often associate with larger speaker sizes.
Fiberglass-reinforced plastic (FRP) frames
The fiberglass-reinforced plastic (FRP) frames used in the GTO 939’s speakers resist warping even when you mount them on uneven surfaces. Their nonmagnetic carbon composite helps to control the magnet’s energy and deliver it to the voice instead of wasting it as heat. What’s more, the plastic doesn’t resonate. The result of this control is accurate sound in your car.
Three-ohm voice coils
Three-ohm voice coils in GTO 939 speakers allow compensation for any added resistance by thin factory-installed speaker wiring. They also provide more output than factory-installed speakers in the same class.
Vented magnet assemblies
GTO 939 speakers feature vented magnet assemblies to help cool the voice coil. Keeping the voice coil cool adds to increased reliability from greater power handling and helps eliminate power compression that can distort the speakers’ sound.
Frequency response to 21kHz
A wide frequency response that extends beyond 20kHz helps to compensate for speaker-placement variations in your car and for human hearing deficiencies in the high-frequency spectrum above 15kHz. The result is that GTO 939 speakers deliver more of the full-range frequency response that you associate with great sound.
High sensitivity (94dB@2.83V/1m)
High sensitivity allows a wider range of power to provide great sound without overdriving the audio system. With a sensitivity of 94 decibels at 2.83 volts/1 meter, the GTO 939 speakers achieve excellent volume and musicality with as little as 5 watts RMS. That means better performance overall, even with very moderate power driving them. And better performance makes the GTO 939 speakers an ideal replacement for factory speakers as well as for any aftermarket speaker installation.
UniPivot and adjustable tweeter level
UniPivot technology is an innovative feature on the GTO 939 that allows the tweeter to be aimed at the listening location for better stereo imaging and high-frequency response at the listener’s ear. You can also easily adjust the tweeter output from 0 to +3 decibels to compensate for low and off-axis mounting positions or road noise.
Edge-driven, soft-dome tweeter diaphragms
The edge-driven, soft-dome tweeter design in the GTO 939 increases power handling while reducing high-frequency distortion. Edge-driven tweeters also have better dispersion characteristics and allow a lower crossover frequency, which improves imaging. The result is better vocals and clarity in your music. There’s no sense having it loud if it doesn’t sound clean, too.
Industry-leading product development and evaluation standards
JBL technicians specifically evaluate each GTO Series speaker model in the development stages for overall and vocal-range voicing, intermodulation distortion (IMD) and performance at the limits of electrical and mechanical design. We also test according to strict carmaker reliability standards, both in development and in final production. All of these details are virtually unique to JBL car speakers, as most competitors do not even come close to this level of detail and oversight.
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GTO939 - 300-watt, 6
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Item #: GTO939

GTO939

A 6" x 9" speaker that installs easily and offers patented JBL performance.
$189.95 per pair
Availability: Backordered and expected to ship on 09/03/2014
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