- 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"
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
