U-Series v1 8" 600W Subwoofer


    The U-8 can be thought of as an SA-8 v3 on performance boosters. Everything there is to love about the SA-8 v3 just with more power handling, more x-max, and more output potential.
    The specially designed motor is mated to a custom tooled and patented (US Patent D691595) frame which allows for a larger spider and superior clearances to nearly any other 8" woofer on the market today. The U-8 features a full 18mm of one-way linear excursion and mechanical capacity in excess of double the linear limits (around 2.5” peak-to-peak) to ensure that mechanical failures are nearly impossible. As with the SA-8 v.3 it features a surround that mimics the geometry of our large Mega-Roll v.2 surrounds for incredible linearity.

    Physical Dimensions

    Features (U-8)

    • Xmax = 18mm one-way by 70% BL
    • RMS Power = 600-watts
    • Vented magnetic gap featuring 12 chamfered gap vents
    • Vented pole-piece with chamfered edges
    • High velocity under-spider frame vents
    • Black Aluminum 2.25” voice coil former for superior heat dissipation
    • High Temperature copper voice coil wire
    • Large Magnet ID aluminum faraday ring
    • Spring Loaded Terminals
    • Stitched-On “XL” Tinsel Leads to prevent fatigue and failure
    • High strength & patented cast aluminum frame
    • Optimized for small, ported enclosures
    • Bolt-Through Motor Design for enhanced longevity


    T/S SPECS U 8" D2 U 8" D4
    RE (Ohms) 3.8 6.34
    FS (Hz) 39.387 41.288
    VAS (L) 6.345 6.970
    Qes 0.412 0.519
    Qms 2.474 2.542
    Qts 0.353 0.431
    BL (NA) 20.00 21.45
    Mms (Grams) 175.340 145.239
    Cms (mm/N) 93.125 102.308
    Sens (dB @ 1w/1m) 81.6db


    Enclosure Specs

    • Ported Enclosure
      • Size: .65-.75 cuft net
      • Port Area: 9-12 sqin
      • Port Tuning: 35hz
    • Sealed Enclosure
      • Size: .3 cuft net
      • Displacement:  .09 cu. ft. 
    • Depth:  6.02"
    • Outside Diameter: 8.70"
    • Cutout: 7.3"
    • Physical Dimensions