Features: 18" 80 oz 4 ohm polymer treated cone paper with foam surround suspension, 500 watts, 3" Voice Coil woofer.

• Polymer Treated Cone Paper and Foam Surround
• Large 3" Aluminum Voice Coil
• 80 oz Vented Magnet
• Made in the USA

Specifications-

    Power capacity: 250W/500W RMS/peak
    Frequency response: 20 ~ 2,500 Hz
    Nominal impedance: 4 Ω
    Voice coil diameter: 3"
    Magnet weight: 80 oz.
    Sensitivity: 95 dB W/M
    Fs: n/a Hz
    Re: n/a Ω
    Qms: n/a
    Qes: n/a
    Qts: n/a
    Vas: n/a L
    Mms: n/a g
    BL: n/a
    Xmax: 3.5 mm

Dimensions -

    Overall Frame Size: 17-31/32" dia.
    Required Cutout: 16-5/8" dia.
    Mounting Depth: 7-3/16"