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)

AUDIOFROG

AUDIOFROG GB40 4” LOUDSPEAKER