Designed as a dedicated midrange driver for special applications in 3-way systems, the GB25 is optimized for enclosures as small as 0.2 liters (2-1/2” x 2-1/2” x 2”). The GB25 can be installed in a tiny enclosure in a custom A-pillar or used infinite baffle in a door panel or a dashboard. Like all the GB Series midrange speakers, the GB25 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): 150 Hz – 16 kHz
  • Sensitivity (2.83 V/1 M): 86 dB
  • Recommended Amplifier RMS Power Range: 20 W – 100 W
  • Recommended High Pass Filter Frequency and Slope: ≥ 200 Hz, ≥ 12 dB/oct
  • Recommended Low Pass Filter Frequency and Slope: ≤ 12 kHz, ≥ 12 dB/oct

Dimensions:

Frequency Response & Impedance:

Thiele & Small Parameters:

  • Revc: 2.3 Ω
  • Levc@1kHz: 0.06 mH
  • Sd: 26.4 cm²
  • Mmd: 3.34 g
  • Mms: 3.42 g
  • Cms: 256 µM/N
  • Vas: 0.26 liters
  • Fs: 170 Hz
  • BL: 3.4 TM
  • Qms: 4.8
  • Qes: 0.75
  • Qts: 0.65
  • Xmax (1-way linear): 4 mm (3/16”)
  • Basket Displacement: 0.06 liters (0.002ft³)
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