The BRM5ND is a midrange speaker that's perfect for the new generation of compact car stereo systems. It has an impressive 525 watts (8-ohms) of power, and it's made out of high-quality neodymium. The BRM5ND features the latest technology to give you the best sound possible.

Features:

Nominal Diameter: 5-1/4"
Nominal Impedance: 8 Ohm
Max Power: 525 W
RMS Power: 250 W
Sensitivity (1w/1 m): 90.2dB
Frequency Range: 147 - 14k Hz
Voice Coil Diameter: 1.5"
Air Gap Height: 1/4"

Thiele & Small Parameters:

Resonant frequency, FS: 147 Hz
D.C Voice Coil resistance, Re: 6 Ohm
Mechanical Quality factor, QMS: 25.39
Electrical Quality factor, Qes: 0.51
Total Quality factor, Qts: 0.50
Equivalent air volume to Cms, Vas: 1.06 L
Mechanical resistance, Rms: 0.38 kg/s
BL Factor, BL: 8.19 N/A
Effective surface area, SD: 8.3m M
Linear Excursion, Xmax: 3/32"

Materials:

Basket: Die Cast Aluminium
Cone: Paper
Surround: Trested Cloth
Voice Coil Wire: CCAW
Voice Coil Bobbin: Kapton
Magnet: NdFeB

Mounting Information:

Overall Diameter: 5-1/4" x 5-1/4"
Bolt Circle Diameter: 5-13/32"
Baffle Cutout Diameter: 4-23/32"
Depth: 2-31/32"
Net weight 1.3Kg

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BRM5ND 5.25" Neodymium Midrange Speaker 525 Watts (8-ohms)