Sundown Horizon 10" 750 Watt RMS Dual 4 Ohm Car Audio Subwoofer HZ-10

• 750W RMS subwoofer delivers powerful bass with clean controlled output
• Dual 4 ohm 2.5 inch high-temp copper voice coil built for daily power handling
• Class-leading 14mm Xmax for strong low frequency performance without distortion
• Heavy cast aluminum basket with stitched tinsel leads for long-term durability
• Optimized cooling system keeps the sub running cool under high output

Sundown Horizon 10" 750 Watt RMS Dual 4 Ohm Car Audio Subwoofer HZ-10

This Listing Includes:

• (1) Horizon Series HZ-10 Dual 4 Ohm Subwoofer

The HZ-10 from Sundown Audio is built for serious low-end performance in compact and mid-size enclosures. Rated at 750 watts RMS with a high-temperature 2.5 inch copper voice coil and a class-leading 14mm of excursion, this subwoofer delivers deep, controlled bass with impressive efficiency.

A heavy-duty cast aluminum basket, bolted spider pack, and stitched Mini-XL tinsel leads ensure long-term durability even under hard daily use. The high-roll surround paired with a progressive spider keeps movement smooth and accurate, while the vented motor gap and pole piece maintain cool operating temperatures when pushing power.

Optimized for ported enclosures but versatile enough for sealed builds, the HZ-10 is perfect for systems that want loud, clean bass without sacrificing sound quality or reliability.

Specifications:

• RMS Power Handling: 750 Watts


• Voice Coil: 2.5" High Temp 4-Layer Copper


• Impedance: Dual 4 Ohm


• Xmax: 14mm

T/S Parameters:

• Re: 6.13 Ohms


• Fs: 33.143 Hz


• Vas: 22.863 L


• Qes: 0.539


• Qms: 3.430


• Qts: 0.466


• BL: 19.782 NA


• Mms: 165.360 g


• Cms: 139.453 mm/N


• Sensitivity: 83.8 dB @ 1W/1M

Recommended Enclosures:

• Ported: 1.0 cu ft net, 15 sq in port area, tuned to 35 Hz


• Sealed: 0.5 cu ft net


• Displacement: 0.1 cu ft

Dimensions:

• Mounting Depth: 5.8"


• Outside Diameter: 10.45"


• Cutout Diameter: 9.2"

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
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• Meta Pay (formerly Facebook Pay)
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• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

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.

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• Make sure you’ve received the shipping confirmation email with the tracking number.
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