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GB SERIES

SUBWOOFERS

GB12D2  12″ (300 MM) AUDIOPHILE GRADE AUTOMOTIVE SUBWOOFER

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 mid-bass.

 

The GB12D2 includes a vented, cast aluminium 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:

GB12D2-Dimensions.gif

ENCLOSURE PERFORMANCE (SEE OWNER’S MANUAL FOR DETAILS):

Sealed Enclosure Volume: 28.3 liters (1 ft³):

GB12D2-Sealed Enclosure Perf-Graph (matc

Vented Enclosure Volume and Tuning: 42.5 liters (1.5 ft³), 33 Hz:

GB12D2-Vented Enclosure Perf-Graph (matc

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)

VIEW MORE Subwoofers from the GB Series >>> 

>>>

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