Overview
Features
Technical Details
Downloads
Overview
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.
Features
- 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
Technical Details
Specifications:
- 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
Dimensions:
Enclosure Performance (See Owner’s Manual For Details):
Sealed Enclosure Volume: 28.3 liters (1 ft³):
Vented Enclosure Volume and Tuning: 42.5 liters (1.5 ft³), 33 Hz:
Thiele & Small Parameters:
- Revc: 1 Ω or 4Ω
- Levc@1kHz: 0.33 mH (2 Ω configuration)
- Sd: 510.7 cm2
- Mmd: 183 g
- Mms: 189 g
- Cms: 153 µM/N
- Vas: 57 liters
- Fs: 29.5 Hz
- BL: 8.37 TM (1Ω configuration)
- Qms: 8.44
- Qes: 0.52
- Qts: 0.49
- Xmax (1-way linear): 17.6 mm (11/16”)
- Basket Displacement: 4.17 liters (0.147 ft3)
Downloads
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