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GB Series subwoofers are designed for high power handling and optimized to provide superior low frequency extension from a wide range of sealed and vented enclosures.  A copper inductance-reducing pole piece cap also reduces distortion and extends the range of flat response well into the midbass.
 
The GB12D2 includes a vented, cast aluminum basket, dual 2 ohm voice coils and a convenient switch to select a 1 ohm or 4 ohm configuration.
 
Treated Paper Cone
3” (75 mm) Voice Coil on Fiberglass Former
Dual 2 Ω Voice Coils
Impedance Selection Switch
Copper Inductance- and Distortion-Reducing Pole Piece Cap
Extended Pole Piece
Flared Pole Piece Vent
Dual Ferrite Magnets
Machined Back Plate
Proprietary Vented Cast Aluminum Basket
Tinsel Leads Stitched to the Spider
Flat, Progressive Nomex® Spider
Nitrile Butadiene Rubber Surround
Screw Terminals
Nominal Impedance: 1 or 4 ohms
RMS Power Handling: 500 W
Peak Power Handling: 1500 W
Frequency Response (-3 dB): 22 Hz – 180 kHz
Sensitivity (2.83 V/1 M): 95 dB (1 Ω configuration)
Recommended Amplifier Power Range: 100 W – 1000 W