Sundown SA-12 Loaded 12" Ported Subwoofer Enclosure – Proline-X Professional Series
Sundown SA-12 Loaded 12" Ported Subwoofer Enclosure – Proline-X Professional Series
Pre-installed Sundown SA-12 Classic subwoofer in a 1.75 cu ft precision-tuned Proline-X ported enclosure. Ships fully wired and ready for powerful bass.
Sundown SA-12 Classic Subwoofer Integrated into Proline-X Professional Series Ported 12-Inch Enclosure
This loaded enclosure combines the high-output performance of the Sundown Audio SA-12 Classic with the precision-engineered Proline-X Professional Series 1.75 cu ft ported enclosure. Built for serious daily drivers and demo rigs alike, this setup delivers powerful bass with clean low-end extension. The SA-12 Classic is a dual 4-ohm subwoofer rated at 750W RMS, known for its durability, low distortion, and versatility in ported box applications.
Each voice coil is wired individually using 12-gauge OFC speaker wire to the enclosure’s high-output terminal cup, giving you the freedom to wire externally to 2Ω (parallel) or 8Ω (series) to match your amplifier. The enclosure is built using CNC-cut MDF, with internally braced panels, polyfill installed for acoustic tuning, and threaded inserts for clean and secure subwoofer mounting.
This system is fully pre-assembled and ships ready for external wiring — no cutting or fabrication required. It’s a complete solution for anyone who wants real output from a proven driver in a properly matched enclosure.
✔Precision Tuned – Designed to match SA-12 output and extension goals
✔Pro-Grade Build – Uses heavy-duty materials and internal bracing
✔Gloss Black Acrylic inserts: Show off your enclosure with stunning acrylics on the front of the enclosure
✔Dual-Coil Ready – Supports parallel or series external wiring
✔Performance Tested – Tuned in real-world daily driver setups
Frequently Asked Questions
Is the subwoofer already installed?
Yes, the subwoofer comes professionally installed and secured using threaded inserts and machine screws, which makes servicing easier and eliminates risk of stripped holes. It's also internally pre-wired with dual runs of 12-gauge OFC speaker wire — one for each voice coil — so the system is ready for fast external connection.
How is the wiring configured?
Each subwoofer’s dual 4-ohm coils are wired separately to the enclosure’s high-output terminal cup. This provides external access to both coils, allowing you to wire the subwoofer for a 2-ohm load (parallel) or an 8-ohm load (series), depending on your amplifier's capabilities.
Can I run just one coil?
No—both coils must be connected and powered. Running only one voice coil significantly reduces output and can damage the subwoofer over time due to uneven magnetic force and heat dissipation. Always use both coils as the subwoofer was designed.
Is the enclosure tuned or sealed?
This Proline-X enclosure is ported and precisely tuned to 34 Hz. It’s designed to maximize the SA-12’s low-end extension and output. A ported design like this delivers more efficiency and output per watt than sealed enclosures, making it ideal for music genres with deep bass.
Can I use my factory amplifier with this setup?
Most factory amplifiers are not designed to power aftermarket subwoofers, especially those rated at 750W RMS like the SA-12 Classic. Factory amps typically lack the necessary power output and often don’t support low impedance loads. We strongly recommend using a dedicated monoblock amplifier rated for 2Ω operation.
What’s the difference between 2Ω and 8Ω wiring?
Wiring the subwoofer coils in parallel results in a 2Ω final load, which allows your amplifier to deliver maximum power — this is the most common setup. Wiring in series results in an 8Ω load, reducing power draw, and is generally used in multi-sub setups or with specific amp requirements.
Can I purchase the enclosure without the subwoofer?
Yes, the Proline X enclosure can be purchased separately. Please visit our enclosures section for more options.
Overview
What's Included
Why This Combo Works:
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