Sundown SA-12 v.3 12” Subwoofer Package with Dual Ported Box – 3,000W RMS System

Turn-key bass package featuring a pair of Sundown Audio SA-12 v.3 12" subwoofers loaded in a precision-tuned dual ported Baltic Birch enclosure by Basshead Supply. Designed for daily musicality with serious output, this bundle is optimized around a 33 Hz tuning for deep, clean, and punchy bass that hits hard without sacrificing sound quality.

What’s Included

• (2) Sundown Audio SA-12 v.3 12" Subwoofers (your choice: Dual 2Ω or Dual 4Ω)
• (1) Dual 12" Ported Enclosure – handcrafted from Baltic Birch, tuned to 33 Hz, pre-wired with 10-ga OFC
• Recessed satin-nickel binding posts and a screwless, show-ready finish

Subwoofers: Sundown Audio SA-12 v.3 (Pair)

• Power Handling (each): 1,500W RMS / 3,000W Peak (bundle total: 3,000W RMS)
• Voice Coils: Dual 2Ω or Dual 4Ω
• Linear X-Max: ~22 mm one-way (increased over v.2); X-mech ~41 mm one-way
• Cooling & Structure: Vented magnetic gap, solid pole with internal vent channels, aluminum 2.75" former
• Motor Design: Large magnet shorting ring (Faraday) + pole cap Faraday ring; locked-in ring retained by T-yoke
• Frame/Soft Parts: Custom-tooled aluminum frame (same as U v.2), taller cone + wider spiders for stability, competition-grade paper cone, strong foam surround
• Reliability: High-temp copper voice coil wire, stitched-on double “XL” tinsel leads, spring-loaded terminals
• Engineering: Fully 3D FEA-optimized spider packs for enhanced linearity and low distortion

Enclosure: Dual 12" Ported (Basshead Supply – Branded Series)

Expertly engineered to unleash the full potential of the SA-12 v.3 pair with strong output and excellent cone control.

Performance Specifications

• Net Internal Volume: 3.5 ft³
• Tuning Frequency: 33 Hz (musical and powerful low-end)
• Port Area: 50.625 in²
• Port Dimensions: 13.5" × 3.875"
• Sub Cutout Diameter (each): 11.01"
• System Power Compatibility: Up to ~4,000W RMS (2,000W RMS per side)

Build & Finish

• Material: 3/4" (18 mm) Russian Baltic Birch plywood
• Front Baffle: Solid 1" (24 mm) – 17-ply birch veneer for maximum strength
• Bracing: Center-mounted 3/4" internal baffle brace
• Assembly: Screwless exterior; bonded with Titebond III for seamless integrity
• Finish: Carbon gray stain with protective polyurethane topcoat
• Wiring: Pre-wired with 10-ga OFC speaker wire
• Terminals: Recessed satin-nickel brass binding posts

External Dimensions

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

System Matching & Wiring Tips

• Dual 2Ω subs (pair): Wire to 2Ω or 0.5Ω final (amplifier dependent).
• Dual 4Ω subs (pair): Wire to 4Ω or 1Ω final (most common for monoblock amps).
• Amp Recommendation: Quality monoblock rated for 2,500–3,500W RMS @ target impedance with proper electrical upgrades.

Proudly designed and built in the USA. Part of the Basshead Supply Branded Series – made for enthusiasts who demand better than prefab.

Why This Bundle

• Matched components for proven performance and reliability
• Show-ready screwless exterior and carbon gray finish
• Deep extension, strong mid-bass, and low distortion from 33 Hz tuning + SA-v3 motor tech

Order now to give your system a rugged, stylish, and SPL-capable foundation—ready to install and built to impress.