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[img width=280 height=280]http://ecx.images-amazon.com/images/I/51W11R5VEEL._SL500_AA280_.jpg[/img]
JBL GT4 15"



* 15" GT-series subwoofer
* Power Handling, RMS: 250 Watts
* Power Handling, Peak: 1000 Watts
* Frequency Response (±3dB): 20Hz - 400Hz
* Sensitivity: 91dB
* Mounting Depth: 6-3/4"
* Cut-Out Diameter: 14-1/4"
* Impedance: 4 Ohms

ir dar manualas:
http://manuals.harman.com/JBL/CAR/Ow...%20Man_ENG.pdf