Designed as a dedicated midrange driver for application in door panel or dashboard installations, the GB40 is optimized for an infinite baffle application or an enclosure of at least 1 liter. The GB40’s 41 mm mounting depth makes it an easy fit in locations that require a shallow midrange. Like all the GB Series midrange speakers, the GB40 includes a grille and installation kit that can be customized to blend with or highlight nearly any installation.

 


  • Treated Paper Cone
  • 1” (25 mm) Voice Coil on Fiberglass Former
  • Milled Flat Single-Layer CCAL Voice Coil
  • Copper Inductance- and Distortion-Reducing Pole Piece Cap
  • Neodymium Motor with Bucking Magnet
  • Flat, Progressive Nomex® Spider
  • Nitrile Butadiene Rubber Surround
  • Proprietary Vented Cast Aluminum Basket
  • Chrome-Plated Cast Zinc Motor Housing
  • Screw Terminals
  • All-Metal Grille and Mounting Kits Included
  • Hex Screws and Tools Included
  • Removable and Paintable Grille
  • Rub-On Grille Logos Included for Custom Installation

Specifications:

  • Nominal Impedance: 4 Ω
  • RMS Power Handling: 100 W (with recommended crossover)
  • Peak Power Handling: 300 W (with recommended crossover)
  • Frequency Response (-3 dB): 80 Hz – 12 kHz
  • Sensitivity (2.83 V/1 M): 87 dB
  • Recommended Amplifier RMS Power Range: 20 W – 100 W
  • Recommended High Pass Filter Frequency and Slope: ≥ 110 Hz, ≥ 12 dB/oct
  • Recommended Low Pass Filter Frequency and Slope: ≤ 6 kHz, ≥ 12 dB/oct

Dimensions:

Frequency Response:

Thiele & Small Parameters:

  • Revc: 3 Ω
  • Levc@1kHz: 0.06 mH
  • Sd: 59.4 cm²
  • Mmd: 5.18 g
  • Mms: 5.45 g
  • Cms: 574 µM/N
  • Vas: 2.89 liters
  • Fs: 90 Hz
  • BL: 3.9 TM
  • Qms: 5
  • Qes: 0.62
  • Qts: 0.55
  • Xmax (1-way linear): 4.5 mm (3/16”)
  • Basket Displacement: 0.106 liters (0.004ft³)
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