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Audio Frog
GB12D4
GB12D4 12" Audiophile Grade Automotive Subwoofer, Dual 4-Ohm Voicoils, Switchable 2-Ohm or 8-Ohm configuration, 500W RMS. 1500W Peak
- Treated Paper Cone
- 3” (75 mm) Voice Coil on Fiberglass Former
- Dual 4 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: 2 or 8 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): 92 dB (2 Ω configuration)
- Recommended Amplifier Power Range: 100 W – 1000 W
Thiele & Small Parameters:
- Revc: 2 Ω or 8Ω
- Levc@1kHz: 0.58 mH (1 Ω configuration)
- Sd: 510.7 cm2
- Mmd: 177 g
- Mms: 184 g
- Cms: 171 µM/N
- Vas: 63.7 liters
- Fs: 28.4 Hz
- BL: 11.47 TM (1Ω configuration)
- Qms: 8.82
- Qes: 0.52
- Qts: 0.49
- Xmax (1-way linear): 19 mm (11/16”)
- Basket Displacement: 4.17 liters (0.147 ft3)
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