Dual Sundown Audio SAv3 8" Custom Subwoofer Enclosure – 1.3 ft³ Ported Bass Box

Unlock tight, responsive bass from your dual Sundown Audio SAv3 8" subwoofers with this purpose-built enclosure from Basshead Supply. Designed for high-efficiency output and durable performance, this compact dual 8" ported box is perfect for daily drivers, small trunk builds, or under-seat applications.

Performance Specifications – Dual SAv3 8" Subwoofer Box

• Net Internal Volume: 1.3 cubic feet
• Tuning Frequency: 35 Hz – optimized for musical and punchy bass
• Port Area: 21 square inches
• Port Dimensions: 10.5″ x 2″
• Subwoofer Cutout Diameter: 7.375″ (each subwoofer)
• Power Handling: Designed for setups up to 2000W RMS (1000W RMS per sub)

Premium Build Quality & Materials

• Material: 3/4” (18mm) Russian Baltic Birch plywood throughout
• Bracing: Internal 3/4” (18mm) center baffle brace for added rigidity
• Veneer: 13-ply birch construction for maximum strength and lightweight design
• Finish: Carbon gray stain with a protective polyurethane topcoat
• Assembly: Glued with industrial-grade Titebond III – no visible screw holes
• Wiring: Prewired with 10-gauge OFC wire
• Binding Posts: Recessed satin nickel brass terminals

Enclosure Dimensions

• Height: 12″
• Width: 24.75″
• Depth: 15″

Made-to-Order – Lead Time & Refund Policy

Lead Time: 2–3 weeks (custom fabrication)
Refund Policy: No refunds after enclosure enters the cut-out phase

Handcrafted in the USA – Basshead Supply Branded Series 🇺🇸

This custom dual 8" subwoofer enclosure is part of our exclusive “Branded Series,” offering subwoofer-specific designs that outperform generic prefab boxes. Proudly made in the United States, each unit is hand-assembled to deliver premium performance and unmatched durability.

Whether you're looking to enhance your daily driver or maximize SPL in a space-conscious build, this box offers the perfect combination of airflow, strength, and style. Finished with our signature gray stain and built with pride, this enclosure is the ideal home for your Sundown Audio SAv3 8" subwoofers.

Order yours today and experience clean, impactful bass from a box that’s built to last—and built to slam.