Sundown Audio Single 18" SAv2 Ported Enclosure - AABE-SA-SAv2-S18SUPB-RD
Lead time is 2-3 weeks, no refunds once enclosures have been cut out! This is a custom made box specifically for a Sundown Audio SAv2 18" subwoofer. At Basshead Supply the goal with the “branded series” enclosures is to offer subwoofer specific enclosures that are well built, well performing and good looking enclosures at an affordable price. Using premium ¾” Russian Baltic Birch we are able to achieve a very strong and light enclosure. Using our refined assembly process produces an enclosure with NO visible screw holes anywhere on the enclosure. The entire enclosure is glued together with Titebond III and coupled with our 1” baffle and an additional 18mm baffle brace (on the dual subwoofer models) the enclosure is strong enough to handle subwoofer setups up to 2000W RMS (dual enclosures – 4000W RMS). Finished off with our carbon gray stain and a polyurethane finish these enclosures have a unique look to set it apart from all the generic prefabs. Complete with a recessed Satin Nickel Brass binding posts and prewired with OFC 10g wire, you are ready to go the moment it arrives. These are also built with love, by hand right here in the UNITED STATES OF AMERICA.
Custom built enclosure specifically for the Sundown Audio SAv2 18" subwoofer.
Specifications
| Net Internal Volume |
5.5 cubic feet |
| Tuning Frequency |
30 Hz |
| Port Area |
73.593 sq in |
| Port Dimensions |
16.346” (L) x 4.5” (H) |
| Subwoofer Cut-Out Diameter |
17.01 inches |
| Material |
3/4" (18mm) Plywood |
| Baffle |
Solid 1" (24mm) for added strength |
| Construction |
13-ply Birch Veneer (17-ply Baffle) |
| Finish |
Gray Stained |
| Terminal |
Pre-wired Metal Binding Post |
Dimensions/Weight:
- 18" tall
- 39.875" wide
- 20.75″ deep
What Our Experts Think
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Precision-Tuned Ported Design: Engineered specifically for the SAv2 18" subwoofer, this enclosure maximizes airflow and minimizes distortion, delivering deep, resonant bass.
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High-Quality Construction: Built with durable materials to withstand the intense vibrations and power output of high-performance audio systems.
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Optimized Airflow: The ported design enhances low-frequency response, ensuring that bass notes are both powerful and clear.
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Compact Footprint: Despite its robust performance, the enclosure maintains a manageable size, making it suitable for various vehicle installations.
Q&A
Q: What makes this enclosure different from generic boxes?
It’s specifically engineered for the acoustic profile of the Sundown SAv2 18", ensuring maximum efficiency and output.
Q: What tuning frequency is this box built for?
It’s precision-tuned to match the optimal performance range of the SAv2 18", typically focused on strong low-end SPL.
Q: What materials are used in construction?
Made from thick, CNC-cut MDF with internal bracing to reduce resonance and distortion.
Q: Can I use another 18" sub in this box?
You can, but it’s optimized for the SAv2. Using a different model may affect sound quality and output.
Q: How is it finished?
It features a rugged, durable exterior finish—ready for daily use or show setups.
Q: Does the enclosure come pre-wired?
Yes, it includes internal wiring with a heavy-duty terminal cup for quick setup.
Maintenance Tips
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Keep Enclosure Clean: Wipe exterior with a soft, dry cloth to remove dust and dirt.
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Inspect Port Opening: Ensure it remains clear for unrestricted airflow and bass response.
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Check Subwoofer Mounting: Tighten mounting hardware as needed to prevent rattling or air leaks.
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Avoid Moisture: Keep in a dry environment to protect the MDF and internal components.
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Secure Wiring: Regularly inspect speaker terminals and wiring for solid, corrosion-free connections.
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Protect During Transport: Handle with care to avoid impact damage or surface wea
