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.
Size: 6" x 9"
Power Handling (RMS): 5W-200W
Sensitivity: (2.83V/1m) 94dB
Frequency Response: 46Hz-21kHz
Power Handling (Peak): 300W
Nominal Impedance: 3 ohms