Trinity Audio Solutions B Series Dual 15" Ported Enclosure — 6.8 cu ft @ 30Hz
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order, and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 within the contiguous US. Freight items may require delivery coordination; any shipping exceptions are shown before checkout. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
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Subwoofer Wiring Diagram
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Engineered specifically for the Trinity Audio B Series 15" subwoofer, this dual 15" ported enclosure delivers the airspace and 30 Hz tuning needed for deep, controlled bass. Handcrafted by hand in the USA from Russian Baltic birch, it arrives ready to install — just wire up your subwoofers and enjoy.
Specifications
| Net Volume | 6.8 cubic feet |
| Tuning | 30 Hz |
| Port Area | 89.7 sq in |
| Port Size | 19.5" x 4.6" |
| Cutout | 13.78" |
| Construction | 3/4" (18mm) Russian Baltic birch, 13-ply |
| Baffle | Solid 1" (24mm) front baffle, 17-ply |
| Bracing | 3/4" (18mm) center baffle brace |
| Finish | Carbon gray stain with polyurethane topcoat |
| Wiring | Pre-wired 10ga OFC with metal binding post |
| Power Rating | Up to 3,500W RMS |
| Dimensions (H x W x D) | 21.0" x 39.75" x 22.625" |
Features
- Handcrafted in the USA with zero visible exterior screw holes
- Fully glued with Titebond III for airtight integrity and durability
- Ships ready to install
Built to order. Ships in 2–3 weeks. All sales final.
