Horizon HZS 12" Subwoofer

Sundown Audio HZS Series Subwoofers
Purpose-Built for Tight Installs. Powered by Real Performance.

The Sundown Audio HZS Series was engineered from the ground up to bring powerful, clean bass to space-limited installations—without sacrificing output, reliability, or thermal performance. Whether you’re working with a slim enclosure behind a truck seat, under a rear deck, or in a stealth build, the HZS delivers the kind of low-end impact you expect from Sundown.

Available in 10" and 12" sizes, the HZS is a shallow-mount subwoofer rated for 600 watts RMS and designed to thrive in ported enclosures, though sealed options are also supported. Each model features a 2.5" black aluminum voice coil, a high-roll surround, a progressive spider, and a vented motor design that keeps things cool when the music gets loud.

Built for daily abuse and engineered for clean excursion, the HZS combines strength, efficiency, and low-profile fitment into one aggressive package. It’s the ideal solution when you want true bass performance without giving up precious install depth.

Key Features:

• RMS Power: 600W
• Voice Coil: 2.5" black aluminum former - Dual 4Ω
• Cooling: Vented motor gap and solid pole piece
• Suspension: High-roll surround and progressive spider
• Lead Wires: Stitched mini-XL tinsel leads for long-term durability
• Motor Assembly: Bolt-through design for mechanical strength
• Mounting Depth: Compact profile for shallow, space-restricted enclosures
• Best Use: Ported enclosures for optimal output; sealed compatible

Return for refund within: 30 days

Return for replacement within: 30 days

Standard Return Policy Overview

You may return merchandise purchased from Showtime Electronics for a refund or a replacement, provided that the procedures and requirements are followed. All returns require a return merchandise authorization (RMA) number. An RMA number must be issued within 30 calendar days after the date of purchase. An RMA number is valid for 14 calendar days after it is issued. Once you log in to your user account, you will be able to Request and RMA. In addition, you can also request an RMA at the bottom of our homepage. If you have any issues, please email us at sales@showtimeelectronics.com

Free shipping is available in the continental United States, excluding Hawaii and Alaska.

International shipping is available and calculated at checkout.

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