Sundown Audio Promo Codes and Coupons October 2025

Sundown Audio

Sundown Audio is a manufacturer and retailer of high-performance car audio equipment, specializing in subwoofers, amplifiers, and speakers. Founded in 2003, they've built a reputation for producing quality audio components that deliver exceptional sound at competitive prices. Their products are popular among car audio enthusiasts and competitors.

sundownaudio.com

Today's Sundown Audio discount codes

TOP PICK

10% off

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10% Off Storewide at Sundown Audio

10% off

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10% Off Select Items at Sundown Audio

5% off

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5% Off Clearance Items at Sundown Audio

Free Shipping

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Free Shipping Storewide at Sundown Audio

Featured Sundown Audio Products

X-Series v.3 8" 800W X-8 Subwoofer

The X-8 v.3 is pretty much THE KING of 8" subwoofers and, certainly, is one of the most popular 8s we've ever produced during its 4+ years in continuous production. It builds on the legacy of the v1 and v2 models but definitively trounces both of them in every way. The secret sauce is largely in the painstakingly FEA optimized spider and surround. It's hard to overstate the impact of proper suspension design on a subwoofer but anyone who has used the X-8 v.3 can attest that we've nailed it here. Beyond the suspension - the X-8 v.3 is built on our custom-tooled 8" frame. It represents the absolute maximum performance possible on this frame platform - nearly 10 years after tooling the frame for the SA-8 v2 we have completely maxed it out! The motor and coil are capable of ~20mm of linear x-max one-way and around 2.4" p-p before the coil leaves the gap (with a little beyond that before any physical bottom is reached). As with most of our subs it also features an aluminum magnet ID shorting ring for reduced inductive distortion as well as a few other secret Sundown tricks for distortion reduction! It's safe to say that the 800-watt RMS rating is quite conservative. Specifications T/S SPECS X V.3 8″ D2 X V.3 8″ D4 RE (Ohms) 4.0 6.0 FS (Hz) 47.4 49.6 VAS (L) 3.6 3.2 Qes 0.36 0.40 Qms 2.58 3.32 Qts 0.31 0.36 Le (mH) 2.01 3.41 BL (NA) 26.0 30.7 Mms (Grams) 202.8 203.5 Cms (uM/N) 0.06 0.05 Sens (dB @ 1w/1m) 82.1 81.8 Xmax 19mm 19mm Enclosure Specifications X v.3 8 Sealed Enclosure 0.3-.04cuft Ported Enclosure 0.75-1.0 cu ft Recommended Tuning 32hz Recommended Port Area 12-16 sq in Displacement 0.13 cu ft Depth 6.8" Outside Diam. 8.70" Cutout 7.36" Physical Dimensions Download

USD 389.99

X-Series XV4 12" 2750W RMS Subwoofer

The Sundown Audio Xv4 12" Subwoofer is built for those who demand real power and precision in their sound system. Designed with premium Xv4 coils, this subwoofer delivers a massive 2750W RMS and 5500W peak power while maintaining outstanding clarity and control. With a durable, heavy-duty motor and optimized cooling system, the Xv4 ensures consistent performance even during extended play. Whether you’re upgrading your car audio or building a competition-level system, this subwoofer delivers thunderous low frequencies that stay tight and accurate. The precision-engineered cone and suspension system provide minimal distortion and maximum output. Pair it with a well-tuned ported enclosure for deep, room-shaking bass that brings your music to life. Built to handle extreme sound pressure, the Xv4 series continues Sundown Audio’s legacy of reliability, innovation, and unmatched performance. Key Features 12-inch subwoofer with Xv4 voice coils RMS Power: 2750W, Peak Power: 5500W Available in Dual 1Ω and Dual 2Ω versions High-efficiency motor structure with strong BL factor Optimized for ported enclosures (2.5 cu. ft @ 32Hz) Xmax: 30mm for deep excursion and accurate bass Reinforced cone for durability under extreme pressure Designed for audiophiles and SPL enthusiasts Technical Specifications (for metafields) Specification XV4 12D1 XV4 12D2 RMS Power 2750W 2750W Peak Power 5500W 5500W Displacement 0.23 cu.ft 0.23 cu.ft Mounting Depth 11.75" 11.75" Outside Diameter 12.81" 12.81" Cutout Diameter 11.09" 11.09" Motor Diameter 9.25" 9.25" Sealed Enclosure Not Recommended Not Recommended Ported Enclosure 2.5 cu.ft @ 32Hz 2.5 cu.ft @ 32Hz Recommended Port Area 40 sq in 40 sq in 4th Order Sealed Side 1.0 cu.ft 1.0 cu.ft 4th Order Ported Side 3.0 cu.ft 3.0 cu.ft 4th Order Port Area 60 sq in 60 sq in 4th Order Port Length 8" 8" Xmax 30mm 30mm Sd (Cone Area) 44.11 44.11 Re (Ω) 2.05 3.25 Fs (Hz) 39.39 36.06 Vas (L) 14.13 15.75 Qes 0.58 0.54 Qms 4.95 4.82 Qts 0.50 0.49 Le (mH) 1.33 2.6 BL (NA) 24.4 22.25 Mms (g) 343.14 367.13 Cms 47.56 53.04 Sensitivity (dB) 83.47 83.06

USD 799.99

10" Carbon Fiber Cone And Dustcap Upgrade

Car audio designed for competition winners. Car subwoofers, Car amplifiers, Car speakers, and accessories for your whole audio system build!

USD 99.99

Horizon HZ-1500 1500 Watt RMS Monoblock Amplifier

Sundown Audio HZ-1500 | Horizon Series 1500W RMS Monoblock Amplifier More Bass. More Control. All Sundown.Designed for bigger builds and subwoofers that demand more, the HZ-1500 delivers up to 1,500 watts RMS at 1 ohm with low distortion and high efficiency. It’s the top dog of the Horizon Series mono lineup — made to push larger woofers or multiple drivers with clean, relentless power that stays cool and sounds tight. Like its smaller siblings, the HZ-1500 features a robust 4-way protection system, DC Sense, and high-level inputs, giving you full flexibility for installs in both factory and aftermarket environments. Tuning is simple and precise thanks to the onboard low pass filter, subsonic filter, and included wired remote bass knob. You’ll have full control of your low end, whether you’re cruising or competing. For builders and bass lovers who want one amp that hits hard, runs cool, and doesn’t take up half the trunk, the HZ-1500 is a no-brainer. It’s built the Sundown way — to deliver clean power, take abuse, and leave competitors in the dust. Specs: RMS Power @ 14.4V• 1 Ohm: 1500W• 2 Ohm: 800W• 4 Ohm: 450W Low Pass Filter: 50Hz – 250Hz Subsonic Filter: 10Hz – 50Hz Input Sensitivity: 6V Max Signal-to-Noise Ratio: 95dB Fuse Rating: 140A Dimensions: 11.25" x 4.63" x 2.2" Weight: 4.23 lbs (1.92 kg) Remote Bass Control Included

USD 359.99

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5% off

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More Sundown Audio Products

Horizon HZS 10" Subwoofer

Sundown Audio HZS Series SubwoofersPurpose-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 Specifications RE (Ohms) 6.850 FS (Hz) 44.557 VAS (L) 19.254 Qes 0.578 Qms 3.320 Qts 0.492 BL (NA) 20.281 Mms (Grams) 124.028 Cms (mm/N) 102.871 Sens (dB @ 1w/1m) 86.6 Xmax T/S SPECS HZS 10" Enclosure Specs Ported Enclosure Size: N/A Port Area: N/A Port Tuning: N/A Sealed Enclosure Size: 0.5 cuft net Displacement: 0.04 cuft. Depth: 3.9" Outside Diameter: 10.3" Cutout: 9.2" Physical Dimensions

USD 244.99

Z-Series ZV7 15" Subwoofer

The Z v.7 is the third step up in Sundown's 2025 "ultra-high excursion" sub-woofer lineup after the M and X v.4 series. All models (12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691597, D691598, and D741841) – the Sundown “mega-platform.” Please note – the Z v.7 is not available, aside from special orders, in 10s due to the motor size. We mate these new platform frames to a quad stacked 265mm (10.43”) diameter motor structure with a total magnet stack height of 100mm (3.94”) featuring a hyper-extended pole and extreme clearances (allowing over 4" p-p travel before mechanical bottom effectively making it bottomless). This is, by far, the largest motor we have ever produced on a Z series sub-woofer. The motor force factor (BL^2/RE) is ~50% higher than the previous generation Z v.6 series. This motor drives a 3.3" diameter 4-Layer Round Wire Aluminum Voice Coil wound on a thick aluminum former. These new round wire coils use a special Sundown designed “fat wire” winding method to handle significant amounts of power and abuse. Based on Sundown's years of experience with the Z v.4, 5, and 6 series we've also improved the voice coil ventilation yet again. The Z v.7 features an entirely new and patent-pending airflow directing pole cap, six pole OD channels, SIXTEEN gap vents, and a cross-drilled / slotted top plate to keep the voice coil running cool under extreme conditions.The Z v.7 motor also features a 9mm thick magnet ID Faraday ring which is locked into both the top and back plates. This ring combined with an all-new pole-extension inductance sleeve gives the Z v.7 the most linear inductive performance of any mega-platform sub-woofer to date. As if all of this were not enough to cement the Z v.7as a legend... we were also able to achieve 42mm of one-way linear excursion by 70% BL with an extremely uniform curve via our extensively FEA optimized motor and 95mm long voice-coil winding length. The Z v.7 series was designed from the ground-up to become the new standard in the low-frequency / small, ported box sub-woofer category in this price range. They will work in the same enclosures that are commonly used for Sundown Audio's mega-platform sub-woofers. The Z v.7 series, like its other mega-platform brethren, is really a different kind of woofer due to its incredibly linear suspension. They are designed for the LOWEST level of bass extension possible in a small enclosure while maintaining extremely low levels of distortion. Specs Coming Soon

USD 1299.99

E-Series V.4 10” Subwoofer USED

This is a used product that has been professionally rebuilt here at Sundown Audio. It comes with a non-doa warranty only. That means they are guaranteed to work when you receive it but no further warranty afterwards. Let us know within 24 hours of delivery if this product has an issue. We will not warranty any used subwoofer after that time. These potentially have scratches & scuffs on the magnets/motors and will not be in new condition. RMS 500 watts Dual 2 or 4 ohm voice coils Optimized for ported enclosures Class-leading 14mm Xmax Double-stacked magnet Vented magnetic gap & pole piece for superior cooling High strength stamped steel frame High temp 4-layer copper voice coil wire High-quality push terminals Stitched-on Mini-XL tinsel leads Through relentless research in our North Carolina Headquarters, Sundown optimized a 2.5” voice coil and a truly unique motor design to get the deepest possible bass response out of a 10” subwoofer. The subwoofer showcases a distinctive motor design, featuring a heavily vented magnetic gap and solid pole piece, enabling exceptional thermal power handling. The spider itself is a high strength poly-cotton blend designed to handle the full capacity of the motor. To provide an additional level of ruggedness the spider is bolted down and glued to the frame. Its motor geometry allows for a remarkable 14mm one-way linear Xmax, delivering excursion equivalent to far larger cones. Specifications T/S Specs E v.4 10" D2 E v.4 10" D4 RE (Ohms) 4.030 6.130 FS (Hz) 33.270 33.227 VAS (L) 21.124 21.074 Qes 0.525 0.556 Qms 3.657 3.424 Qts 0.459 0.478 BL (NA) 16.392 19.696 Mms (Grams) 167.587 168.412 Cms (mm/N) 136.554 136.231 Sens (dB @ 1w/1m) 83.6 83.3 Xmax 14mm 14mm Enclosure Specs Ported Enclosure Size: 1 cuft net Port Area: 15 sq. in Port Tuning: 35hz Sealed Enclosure Not Recommended Displacement: 0.11 cuft. Depth: 5.625" Outside Diameter: 10.0" Cutout: 8.875" Physical Dimensions

USD 112.99

Z-Series ZV7 12" Subwoofer

USD 1199.99

Sustainability Score

42%

Sundown Audio shows limited transparency regarding their environmental and social practices. While they maintain quality manufacturing standards, there's minimal public information about their sustainability initiatives, supply chain ethics, or environmental impact reduction efforts. Their packaging and shipping practices could be more eco-friendly, and they lack clear commitments to renewable energy or waste reduction programs. The company would benefit from increased transparency and formal sustainability policies.

About Sundown Audio

4.0 (1)

FAQs

: Sundown Audio usually offers major sales during Black Friday, Cyber Monday, and occasionally during summer months. They also sometimes have flash sales announced through their social media channels.
: Yes, Sundown Audio offers military discounts to active duty personnel and veterans with valid identification. Contact their customer service for current discount rates.
: The best time to purchase is during Black Friday/Cyber Monday sales in November, as these typically offer the deepest discounts. End-of-model-year sales in late summer can also provide good value.
: Sundown Audio generally doesn't offer price matching, as they sell directly to consumers at manufacturer-set prices. However, authorized dealers may have their own price matching policies.
: In the past month, Sundown Audio has launched 5 new promo coupons for shopper discounts. This indicates that Sundown Audio provides regular opportunities for customers to save money on their purchases.
: On average, Sundown Audio provides 2.5 discount coupons each month. Based on historical data, the average time between Sundown Audio coupon releases every 12 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking Sundown Audio website regularly, subscribing to email newsletters, and following them on social media.
: Sundown Audio is offering 5 working store-wide codes, however they are also offering additional discount codes with a best discount of 10% off
: terra.coupons is the #1 provider of discount codes for your favorite retailers, such as Sundown Audio. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest Sundown Audio discount codes.

Curated by

Linda S.

Content Writer

Last updated October 2025

This page was curated by Linda, a savings and discount enthusiast from sunny Sarasota, Florida. With a keen eye for unbeatable deals, Linda ensures that all codes are checked and curated daily. She's also a certified yoga instructor who loves to share wellness tips. Check back tomorrow for more savings and perhaps a little zen!

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From the blog

2025-04-29

Sundown Audio Promo Codes and Coupons October 2025

Sundown Audio

Today's Sundown Audio discount codes