Trinity Audio Solutions M Series 15" Dual Ported Subwoofer Enclosure — 6.8 cubic feet @ 30 Hz
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 Solutions M Series 15" subwoofer, this dual ported enclosure delivers optimal airspace and 30 Hz tuning for deep, controlled bass response. Each box is precision-built for a factory-tight fit and a clean, finished look.
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 3500W RMS |
| Dimensions (H x W x D) | 21.0" x 39.75" x 22.625" |
Features
- Handcrafted by hand in the USA
- Zero visible screw holes on the exterior for a clean, show-quality look
- Fully glued with Titebond III for airtight integrity and long-term durability
- Arrives ready to install — just wire up your subwoofer
Lead time: Built to order. Ships in 2-3 weeks. All sales final.
