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Sundown Audio U Series 18" v.2 1750 RMS


Features (U-10 / 12 / 15 / 18)

  • Black Aluminum 3” voice coil former for superior heat dissipation
  • High Temperature Round-Wire CCAW voice coil with high-temp black adhesive
  • Double stitched surround
  • Heavy duty cast basket
  • Spring loaded terminals accept up to 8 gauge
  • Stitched-on double-XL tinsel leads
  • Rear vented pole piece
  • Rear drilled gap-venting
  • Innovative high-velocity cast aluminum vented frame spacer ring
  • Magnet ID shorting ring
  • Top-Plate Cooling Channels
  • Cast Aluminum surround bolt-on rings
  • Optimized for small ported or bandpass enclosures



T/S SPECSU 18" D2U 18" D4
RE (Ohms)3.86.1
FS (Hz)31.331.4
VAS (L)135.4135.4
Le (mH)2.623.97
BL (NA)29.935.3
Mms (Grams)444.1441.3
Cms (uM/N)0.060.06
Sens (dB @ 1w/1m)92.3db91.8db




Sealed Enclosure2.0 cu ft
Ported Enclosure3.0 cu ft
Recommended Tuning35Hz
Recommended Port Area48 sq in
Displacement0.24 cu ft
Outside Diameter15.59″

Sundown Audio U Series 18" v.2 1750 RMS

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