• Black Aluminum 3” voice coil former for superior heat dissipation
• High Temperature Round-Wire CCAW voice coil with high-temp black adhesive
• Innovative high-velocity cast aluminum vented frame spacer ring
• Spring loaded terminals accept up to 8 gauge

Sundown Audio U Series 18" 3000W Peak Dual 4 Ohm Voice Coil Subwoofer U-18-D4

This listing includes:

(1) Sundown Audio U Series 18" 1500W RMS, Dual 4 Ohm Subwoofer

Features:

• 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

Specifications:

• RE (Ohms) 6.1


• FS (Hz) 31.4


• VAS (L) 135.4


• Qes 0.42


• Qms 3.55


• Qts 0.38


• Le (mH) 3.97


• BL (NA) 35.3


• Mms (Grams) 441.3


• Cms (uM/N) 0.06


• Sens (dB @ 1w/1m) 91.8dB