Sundown Audio SML 10" 500W RMS Dual 4 Ohm Subwoofer SML-10-D4

• RMS Power = 500-watts
• Stitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failure
• Dual-Magnet Design for appropriate motor force factor and mid QTS
• Xmax = 11mm one-way by 70% BL
• Product Dimensions:

This Listing Includes:

• (1) Sundown Audio SML 10" 500W RMS Dual 4 Ohm Subwoofer SML-10-D4

The Sundown Audio SML 10" Subwoofer is built for powerful and reliable bass performance in a compact design. With a 500W RMS power rating, this subwoofer delivers deep, controlled low frequencies while maintaining efficiency and durability. Its bolt-through motor design eliminates visible bolts for a clean, seamless look, while the black aluminum 2.5" voice coil former enhances heat dissipation for long-lasting performance. The high-temperature 4-layer copper voice coil ensures stability under demanding conditions, and the dual-magnet design, vented pole-piece, and multi-vented magnetic gap optimize airflow for improved cooling. Engineered with precision, the SML-10-D4 produces low-distortion bass with a custom-tooled cone shape that reduces mechanical noise during high excursion. Whether you're upgrading your car audio system or building a high-performance setup, this subwoofer is designed to deliver exceptional sound quality and durability.

** This motor is bolted through the top so the bolts are not visible from the back like several other models.

Key Features

• Black Aluminum 2.5" voice coil former for superior heat dissipation


• High Temperature 4-Layer copper voice coil wire


• Stitched-On "Mini-XL" Tinsel Leads to prevent fatigue and failure


• Vented Pole-Piece and Multi-Vented Magnetic Gap


• Dual-Magnet Design for appropriate motor force factor and mid QTS


• Custom tooled cone shape for reduced mechanical noise over high excursion


• Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures


• Magnet ID shorting ring

Subwoofer Specifications:

• Xmax: 11mm one-way by 70% BL


• Xmech is a hard limit of 25mm one-way for 12s and 20mm one-way for 10s


• RMS Power: 500 Watts


• RE (Ohms) - 6.850


• FS (Hz) - 36.116


• VAS (L) - 24.828


• Qes - 0.469


• Qms - 2.766


• Qts - 0.401


• BL (NA) - 21.022


• Mms (Grams) - 133.242


• Cms (uM/N) - 145.749


• Sens (dB @ 1w/1m) - 85.8dB

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

• 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.

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.