Sundown Audio Promo Codes and Coupons December 2025

ET-1R Super Tweeter

Power handling: 100 Watts RMS Impedance: 4 or 8 ohm Frequency range: 4kHz - 20kHz Sensitivity: 105dB Sold Individually Handling 100 watts and only 1.67 inches deep, the BT-R1 is the choice when you want to cut through bass like a hot knife through butter. We incorporated our highest sensitivity (105dB) and biggest diaphragm (33.5mm) into this super tweeter to make the most out of every watt you give it. Measurements Download

Z-Series ZV7 18" 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.

Nightshade NS-Series NS6 12" 3000W Subwoofer NS v.6

Features: Power Handling: 3000 Watts RMS Custom tooled basket Custom-tooled ultra-linear spider packs Specifications: NS V.6 12 T/S SPECS NS V.6 12″ D1 NS V.6 12″ D2 RE (Ohms) 1.8468 3.3377 FS (Hz) 37.6157 37.1375 VAS (L) 11.7603 11.8372 Qes 0.4665 0.4388 Qms 5.0189 5.2560 Qts 0.4268 0.4050 Le (mH) 1.6495 3.1147 BL (NA) 20.5703 28.6043 Mms (Grams) 452.2261 460.9337 Cms (uM/N) 39.5864 39.8452 Sens (dB @ 1w/1m) 83.0242 83.1522 ENCLOSURE SPECIFICATIONS Sealed Enclosure Not Recommended Ported Enclosure 2.5 cu.ft. net Recommended Tuning 32Hz Recommended Port Area 38 sq.in. Displacement .24 cu. ft. Depth 12.75" Outside Diameter 12.81" Cut-Out 11.19" Physical Dimensions Download

Horizon HZS 12" 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) 32.802 VAS (L) 56.708 Qes 0.564 Qms 3.240 Qts 0.480 BL (NA) 21.348 Mms (Grams) 182.051 Cms (mm/N) 129.313 Sens (dB @ 1w/1m) 87.4 Xmax T/S SPECS HZS 12" Enclosure Specs Ported Enclosure Size: N/A Port Area: N/A Port Tuning: N/A Sealed Enclosure Size: 1.0 cuft net Displacement: 0.05 cuft. Depth: 4.3" Outside Diameter: 12.5" Cutout: 11.2" Physical Dimensions

SALT-2 Class D Amplifier

SALT-1.5 Class D Amplifier

3,000 x 1 @ 2 ohms RMS (when linked) 1,500 x 1 @ 1 ohm RMS mono 750 x 1 @ 2 ohms RMS mono 400 x 1 @ 4 ohms RMS mono 24dB variable subsonic filter: 10HZ - 50HZ 24dB variable low pass filter: 35HZ - 250HZ Variable bass boost @ 45Hz 0-9dB Digital Class-D Linkable Mono Block Amplifier Phase shift control 0-180 degrees Power, clipping & protection indicators included Thermal, voltage, speaker short, and dc-offset protection circuitry Included wired remote control displays voltage, temperature, and clipping Producing optimum power at realistic voltages (the 12s, rather than needing 14+ volts), the SALT – Sundown Audio Low-Voltage Technology – is Sundown’s answer! SALT amplifiers represent the pinnacle of Korean Class-D amplifier technology. Whether you are a world-class SPL competitor or a hardcore sound quality fan, the SALT series will be right at home in your system. Product Manual Specifications Input Sensitivity : 6V - 0.2V Efficiency : 90% < Damping Factor : 400 < Frequency Response : 10 Hz – 250 HZ Tested Voltage & THD : 12.8V & Less Than 1% THD Operation Voltage : DC 9V - 15.5V Power Input Recommended Fuse : 160 Amps Dimensions : 7.87” L x 8.67” W x 2.80” H

SALT-1 Class D Amplifier

2,000 x 1 @ 2 ohms RMS (when linked) 1,000 x 1 @ 1 ohms RMS mono 500 x 1 @ 2 ohms RMS mono 250 x 1 @ 4 ohms RMS mono Frequency Response : 10 Hz – 250 HZ 24dB variable subsonic filter: 10HZ - 50HZ 24dB variable low pass filter: 35HZ - 250HZ Variable bass boost @ 45Hz 0-9dB Phase shift control 0-180 degrees Power, clipping & protection indicators included Thermal, voltage, speaker short, and dc-offset protection circuitry Included wired remote control displays voltage, temperature, and clipping Feel the power of the Sundown SALT-1! This strappable amp delivers a massive 2,000 watts at 2 ohms when attached to another SALT-1, or pump out 1,000 watts at 1 ohm on its own. The amp features both a 24dB variable subsonic and low pass filter, along with a bass boost at 45Hz, letting you dial in your personal, perfect sound. The phase shift control makes it easy to precisely adjust the output. With onboard indicators for power, clipping, and protection you’ll have full control over your setup. Use the included wired remote control to see voltage, temperature, and clipping at a glance. Producing optimum power at realistic voltages (the 12s, rather than needing 14+ volts), the SALT – Sundown Audio Low-Voltage Technology – is Sundown’s answer! SALT amplifiers represent the pinnacle of Korean Class-D amplifier technology. Whether you are a world-class SPL competitor or a hardcore sound quality fan, the SALT series will bang. Product Manual Specifications Input Sensitivity : 6V - 0.2V Efficiency : 90% < Damping Factor : 400 < Phase Shift Control 0-180 Degrees Tested Voltage & THD : 12.8V & Less Than 1% THD Operation Voltage : DC 9V - 15.5V Power Input Recommended Fuse : 120 Amps Dimensions : 6.69” L x 8.67” W x 2.80” H

SAEv4-3000.1D Amplifier