About: Sundown Audio U-8 U-Series 8" 600W RMS Car 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.

The U Series woofer from Sundown is incredibly versatile, thriving in both competition setups and your daily driver. It features a double-stacked 9” wide ferrite magnet system and a robust top plate. It also incorporates shorting rings within the magnets and pole cap to enhance frequency response, act as a heat sink, and guide airflow. The U Series is equipped with a significantly thicker custom aluminum frame that boasts heat-dissipation ribs. The v.2 motor also includes an extended pole piece to ensure the coil remains controlled even under high stress!

Specifications: 

• 600 Watts RMS / 1500 Watts Peak
• Dual 2 or 4 ohm voice coils
• Optimized for small ported enclosures
• Aluminum 2.25” voice coil former for superior heat dissipation
• High-temperature copper voice coil
• Double stitched surround
• Heavy-duty cast basket
• Spring-loaded terminals accept up to 8-gauge wire
• Stitched-on heavy-duty tinsel leads
• Solid pole with vent channels and aluminum shorting ring cap
• Rear gap-venting
• Top-Plate Cooling Channels

Enclosure Specifications:  

• Sealed Enclosure: 0.65-0.75 cu ft
• Ported Enclosure: 0.3 cu ft
• Recommended Tuning: 35Hz
• Recommended Port Area: 29-12 sq in
• Displacement: 0.9 cu ft
• Depth: 6.02"
• Outside Diameter: 8.70"
• Cut-Out: 7.30"