• SHALLOW MOUNT 12 INCH DESIGN, Only 4.3 inch mounting depth makes it ideal for trucks, under seat boxes, and space restricted installs
• 600 WATTS RMS REAL OUTPUT, Built to handle 600 watts RMS with a 2.5 inch high temperature voice coil for strong, reliable daily bass
• DUAL 4 OHM CONFIGURATION, Flexible wiring options perfect for 1 ohm final loads when paired with a monoblock amplifier
• ADVANCED COOLING SYSTEM, Vented motor gap and solid pole piece improve heat dissipation during extended high output use
• SUNDOWN ENGINEERED DURABILITY, High roll surround, progressive spider, stitched mini XL tinsel leads, and bolt through motor assembly for long term reliability

Sundown Horizon 12 Inch 600W RMS Dual 4 Ohm Shallow Subwoofer HZS12D4

This Listing Includes:

• (1) Sundown Audio Horizon HZS-12 12" Dual 4 Ohm Subwoofer

The Sundown Audio Horizon HZS-12 Dual 4 Ohm is a purpose built shallow mount 12 inch subwoofer engineered for powerful bass performance in tight installation spaces. With only 4.3 inches of mounting depth, it is ideal for behind seat truck enclosures, under rear decks, and stealth builds where space is limited but performance still matters.

Rated at 600 watts RMS, the HZS-12 features a 2.5 inch black aluminum voice coil designed for strong thermal stability and reliable daily output. The high roll surround and progressive spider allow smooth, controlled excursion while maintaining clean, musical low frequency response.

A vented motor gap and solid pole piece improve heat dissipation during extended play, while the bolt through motor assembly increases mechanical strength and durability. Optimized for ported enclosures but fully compatible with sealed designs, the HZS-12 delivers true Sundown bass in a compact, shallow mount platform.

Specifications:

• RMS Power Handling: 600 Watts RMS


• Voice Coil: 2.5" Black Aluminum Former


• Impedance: Dual 4 Ohm


• Cooling: Vented Motor Gap with Solid Pole Piece


• Suspension: High Roll Surround with Progressive Spider


• Lead Wires: Stitched Mini XL Tinsel Leads


• Motor Assembly: Bolt Through Design


• Recommended Enclosure: Ported Preferred, Sealed Compatible

T/S Parameters:

• Fs: 32.802 Hz


• Vas: 56.708 L


• Qes: 0.564


• Qms: 3.240


• Qts: 0.480


• BL: 21.348 NA


• Mms: 182.051 g


• Cms: 129.313 uM/N


• Sensitivity: 87.4 dB

Dimensions:

• Outer Diameter: 12.5"


• Cutout Diameter: 11.2"


• Mounting Depth: 4.3"


• Motor Diameter: 6.15"