Dual 8″ Back-Loaded Horn Subwoofer Enclosure – Tuned to 20Hz

This Dual 8-Inch Back-Loaded Horn enclosure is engineered for extreme low-frequency reproduction and is designed specifically for enthusiasts who demand deep, subsonic bass performance. With a tuning frequency centered around 20Hz, this enclosure is built to excel at 30Hz and below, delivering powerful, room-shaking lows that traditional ported or sealed enclosures cannot reproduce.

Unlike standard musical enclosures, this horn design focuses on ultra-low extension, prioritizing depth over upper-bass output. Because of this, the enclosure naturally peaks near 20Hz, creating a unique and immersive low-frequency experience ideal for subsonic music, cinematic bass, deep-tuned demo tracks, and specialized builds.

Important Usage Notice

This enclosure is designed for a very specific niche of car audio performance.
Its ultra-low tuning means it is not suitable for high-frequency bass playback.
Playing music above ~35Hz at high volumes may lead to:

• Mechanical over-excursion

• Distortion

• Potential subwoofer damage

For best results, users should apply proper subsonic filtering, use content within the enclosure’s intended bandwidth, and pair it with subwoofers capable of handling extreme low-frequency excursion.

Ideal For

• Car audio enthusiasts seeking ground-shaking lows

• Subsonic demo builds

• Deep-tuned home theater-style car audio experiences

• Listeners who want full-body resonance and ultra-low frequency authority

This is a purpose-built enclosure for bass lovers who live in the 20Hz–30Hz world. If you’re chasing the lowest possible extension from a pair of 8-inch subwoofers, this back-loaded horn is engineered to deliver an experience you won’t get from any traditional box design.