Dual Sundown Audio SAv2 12" Custom Subwoofer Enclosure – 3.5 ft³ Ported Box

Unleash deep, clean bass from your dual Sundown Audio SAv2 12" subwoofers with this expertly crafted enclosure by Basshead Supply. Built from premium Baltic Birch and precision-tuned for 33 Hz, this custom 12" dual subwoofer box is designed for maximum performance, durability, and clean aesthetics.

Performance Specifications – Dual SAv2 12" Subwoofer Box

• Net Internal Volume: 3.5 cubic feet
• Tuning Frequency: 33 Hz – musical and powerful bass response
• Port Area: 50.625 square inches
• Port Dimensions: 13.5″ x 3.875″
• Subwoofer Cutout Diameter: 11.01″ (each sub)
• Power Handling: Rated for systems up to 4000W RMS (2000W RMS per sub)

High-Strength Build & Material Quality

• Material: 3/4” (18mm) Russian Baltic Birch plywood
• Baffle: Solid 1” (24mm) front baffle – 17-ply birch veneer for strength and tone
• Bracing: Center-mounted 3/4” (18mm) internal baffle brace
• Assembly: Zero visible screws – joined with Titebond III adhesive for seamless integrity
• Finish: Carbon gray stain with a protective polyurethane topcoat
• Wiring: Pre-wired with 10-gauge OFC speaker wire
• Binding Posts: Recessed satin nickel brass terminals

External Dimensions

• Height: 15″
• Width: 33.75″
• Depth: 20″

Custom Build Timeline & Return Policy

Lead Time: 2–3 weeks from order date (built-to-order)
Refunds: Not accepted after the enclosure enters the cut-out phase

Made in the USA – Basshead Supply Branded Series 🇺🇸

This dual Sundown SAv2 12" custom enclosure is part of our handcrafted Branded Series, designed for bassheads who demand better than prefab. Proudly built in the United States, this enclosure offers the ideal blend of airflow, rigidity, and acoustic tuning—delivering impactful bass and superior sound control.

From the seamless screwless exterior to the refined carbon gray finish, this box is more than just functional—it’s built to impress. Whether for a daily driver or demo car, this custom 12" dual enclosure will bring out the full potential of your Sundown Audio SAv2 setup.

Order now and give your subwoofers the strong, stylish, and SPL-ready enclosure they deserve.