My Account
If you are already registered, please log in.
Create your account and enjoy a new shopping experience.
Create A New Account
have questions?
Always the correct part
We know our products
We're happy to help
Free shipping on orders over $200*
About: Sundown Audio SA-18 v.2 SA-Series 18" 1000W RMS Car Subwoofer
A top-down improvement from previous models, the SA 18-inch sub features the largest motor in the series, now delivering over 35mm of mechanical excursion. The 2.75” coil punches way above its weight, outperforming most 3” coils without adding mass. The motor also features a large magnet shorting ring (faraday ring) to reduce distortion and deliver smoother response across the entire acoustic spectrum. The motor and coil setup is mated to an extremely robust double-layer spider with fully tied-on & doubled-up “XL” tinsel leads. A competition-grade paper cone and a strong foam surround were used to complete this masterpiece.
Specifications:
Enclosure Specifications:
| Thiele-Small Parameters | SA-18 v.2 D2 | SA-18 v.2 D4 |
|---|---|---|
| Dc Resistance (Re) | 3.97 Ohms | 6.06 Ohms |
| Resonance Frequency (Fs) | 29.051 Hz | 31.868 Hz |
| Equivalent Volume (Vas) | 114.234 L | 106.964 L |
| Electrical Factor (Qes) | 0.424 | 0.458 |
| Mechanical Factor (Qms) | 3.052 | 2.853 |
| Total Factor (Qts) | 0.372 | 0.395 |
| Inductance (Le) | 3.6326 mH | 4.7903 mH |
| Bl Factor (BL) | 32.523 | 38.159 |
| Mechanical Mass (Mms) | 619.174 g | 549.519 g |
| Mechanical Compliance (Cms) | 48.474 uM/N | 45.389 uM/N |
| Sens (dB @ 1w/1m) | 90.1 | 90.7 |
| Xmax | 19mm | 19mm |
You may return most new, unopened items within 30 days of delivery for a refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect item).
You should expect to receive your refund within two-three weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Coming Soon...
Sundown Audio
About: Sundown Audio SA-12 v.2 SA-Series 12" 1000W RMS Car Subwoofer This SA-10/12/15 v.2 series is a top-down upgrade from the original SA series. The 2.75” coil punches w
Sundown Audio
About: Sundown Audio SA-10 v.2 SA-Series 10" 1000W RMS Car Subwoofer This SA-10/12/15 v.2 series is a top-down upgrade from the original SA series. The 2.75” coil punches way above its weight,...
Sundown Audio
About: Sundown Audio SA-15 v.2 SA-Series 15" 1000W RMS Car Subwoofer This SA-10/12/15 v.2 series is a top-down upgrade from the original SA series. The 2.75&
Sundown Audio
About: Sundown Audio SA-12 v.3 SA-Series 12" 1250W RMS Car Subwoofer This SA-10/12 v.3 series is the next generation upgrade to the v.2 series. We stuck with the 2.75” coil diameter and added...
Sundown Audio
About: Sundown Audio SA-6.5 v.1 SA-Series 6.5" 200W RMS Car Subwoofer The SA-6.5SW was created to achieve extremely high performance at less than 4” of mounting depth (3.8&
