GB40

• 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

• 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)

USER MANUAL