TRU SPEC Prefab 6x 6.5" Sub Up Port Back Subwoofer Enclosure
Key features
- Double flush baffle.
- Sub-up, port-back layout provides a defined orientation for planning driver and port clearance.
- Computer designed, CNC cut and assembled in-house at GP Car Audio, according to the supplier.
- 0.75-inch MDF construction.
- Empty enclosure lets you select the subwoofers separately; no subwoofer is included.
TRU SPEC Prefab 6x 6.5" Sub Up Port Back Subwoofer Enclosure is backordered and will ship as soon as it is back in stock.
TRU SPEC Prefab 6x 6.5" Sub Up Port Back Subwoofer Enclosure is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The Tru Spec 6x 6.5-inch enclosure is a six-driver, sub-up, port-back design with a double flush baffle. The supplier lists 3.50 ft³ total net internal volume, approximately 0.58 ft³ per subwoofer and 35 Hz tuning; its displacement assumptions need confirmation for the selected drivers.
This is an empty enclosure only. No subwoofer is included.
Key Features & Benefits
- Double flush baffle.
- Sub-up, port-back layout provides a defined orientation for planning driver and port clearance.
- Computer designed, CNC cut and assembled in-house at GP Car Audio, according to the supplier.
- 0.75-inch MDF construction, with the enclosure dimensions and acoustic specifications listed below for comparison.
- Empty enclosure lets you select the subwoofers separately; no subwoofer is included.
Technical Specifications
| Enclosure type | Ported; empty enclosure only |
|---|---|
| Subwoofer configuration | 6 x 6.5-inch |
| External dimensions (W x H x D) | 34.00 inches x 14.00 inches x 22.00 inches |
| Material | MDF |
| Material thickness | 0.75 inch |
| Total net internal volume | 3.50 ft³ (supplier-listed; displacement allowance requires confirmation) |
| Tuning frequency | 35 Hz |
| Port area | 52.00 in² |
| Cutout diameter | 5.95 inches |
| Flush trim diameter | 7.5 inches |
| Baffle and reinforcement | Double flush baffle |
| Layout | Subwoofer(s) up; port back |
| Total driver-displacement allowance | 0.24 ft³ (supplier-listed; see compatibility note) |
| Supplier-listed airspace per subwoofer | 0.58 ft³ (approximate) |
Why Choose This Product?
This configuration gives a six-subwoofer project a defined mounting layout and a 34.00 x 14.00 x 22.00-inch footprint. Use it as a starting point for a carefully checked build, with particular attention to total driver displacement and the 5.95-inch cutouts.
Installation & Compatibility Notes
- Supplier specification clarification: the source states a 0.24 ft³ total driver-displacement allowance while also citing approximately 0.06 ft³ for each of six drivers. Those assumptions do not agree. Confirm the displacement allowance and resulting net volume for your selected drivers before ordering.
- Measure the intended vehicle space and its access opening. Check basket and motor clearance, mounting depth, terminals and cone clearance against the actual driver. No vehicle-specific fitment is claimed.
- A maximum mounting-depth measurement is not provided in the supplier description. Confirm clearance for your exact subwoofer before purchase.
- Leave the port opening unobstructed and confirm the driver manufacturer's recommended ported volume and tuning. Secure the enclosure appropriately for the vehicle installation.
Frequently Asked Questions
Are subwoofers included?
No. This listing is for an empty ported enclosure only. The 6 compatible 6.5-inch subwoofers are selected and purchased separately.
Does matching the nominal subwoofer size guarantee compatibility?
No. Confirm the exact model, cutout, mounting depth, basket clearance, displacement and recommended enclosure volume. A 6.5-inch size label alone is not enough to establish fit.
What should I verify about the displacement allowance?
Ask for confirmation of the total displacement allowance and final net airspace for all six chosen drivers. The supplier's stated 0.24 ft³ total and approximate 0.06 ft³ per-driver reference are inconsistent.
Explore More
Compare more options in our Tru Spec enclosures collection, or contact 12 Volt Outlet with your subwoofer model and available installation space for help checking this enclosure.



