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US8D4 | 8” 4 ohm Ultra Shock Car Audio Subwoofer 800 watts

$121.99

Product Highlight

  • Model Number: US8D4
  • Size: 8 in.
  • RMS/MAX Power: 400W / 800W
  • Recommended Power Range: 100 to 450 watts
  • Frequency Response: 38Hz – 500Hz
  • SPL at 1W / 1m: 92 dB
  • Mounting Depth: 5 in.
  • Voice Coil: 2 in. VC

In stock

Ultra Shock Subwoofers are engineered for performance and sound quality. New materials used for surround and spider, revised stronger baskets, and improved stronger/larger motor structures. Suspension: The surround is now a rugged Santoprene rubber surround that will support long linear excursions with improved reliability. The high flex life Conex spider/damper has been revised in roll shape and material to compliment the improved surround. Motor Structure: Magnet sizes and voice coil winding lengths have all been adjusted for improved performance output and sound quality. The motor structures were engineered using FEA analysis to provide low distortion output at both high and low power levels, which results in more linear motor force within the subwoofers normal operating excursion and power levels for both negative and positive current through the voice coil.

GENERAL US8D4
Size 8″
Impedance (ohm) Dual 4 ohm
Cone material Kevlar Reinforced ultra stiff paper composite
Surround material Butyl rubber
Voice coil 2” BAEISV
Ideal ported box volume (cu ft / liter) 0.29 / 8.21
Ideal sealed box volume (cu ft / liter) 0.7 / 19.82
Port diameter (inch / mm) 4 / 101.6
Port length (inch / mm) 5.75 / 146.1
Dual voice coil Yes
Sensitivity (1W / 1mm) 92 dB
Frequency response 38 Hz – 500 Hz
RMS (watts) 400
Peak power handling (watts) 800
Mounting depth (inch / mm) 5 / 127
Vas (cu ft / liter) 6.2 ohm: 0.3603 / 10.2
Resonant frequency (Hz) 6.2 ohm: 37.657
QTS (Hz) 6.2 ohm: 0.425
Xmax (inch / mm) 6.2 ohm: 0.551 / 14.00