Dayton Audio Ultimax II UMII18 Ported Wedge Enclosure, Single 18″
$579.99
Ported box for a single 18-inch subwoofer, made for the Dayton Audio Ultimax II UMII18: 2.72 cu ft net, tuned 29.5 Hz, up to 9 in mounting depth.
Dayton Audio Ultimax II UMII18...
$579.99
Dayton Audio Ultimax II UMII18 ported wedge enclosure for a single 18-inch driver: 2.72 cu ft net, tuned to 29.5 Hz, 28.2 sq in of port, F3 36.3 Hz.
Around 29.5 Hz the port does most of the work and output climbs several decibels over the same driver sealed. Below 29.5 Hz the cone is no longer loaded, so set a subsonic filter a few hertz under it.
With 28.2 square inches of port, air speed stays low enough that the port should stay quiet at high volume.
The wedge shape sits against the rear seat back and fires into the trunk, leaving the floor in front of it free.
Listed construction: 3/4-inch MDF, with a doubled 1.5-inch front baffle, dado and V-groove panel joints, polyfill installed, terminal cup.
Your subwoofer's mounting depth needs to be 9 inches or less. The published figures assume the dual 2 ohm versions of the driver. Send us your subwoofer model and we will check it against this box before you order.
Questions about fit? Call or text (785) 430-0822.
Box specifications
| Type | Ported |
|---|---|
| Drivers | Single, 18-inch |
| Net volume | 2.72 cu ft |
| Tuning | 29.5 Hz |
| Port area | 28.2 sq in |
| F3 (anechoic) | 36.3 Hz |
| Max mounting depth | 9 in |
| Height | 10.12 in |
| Width | 30 in |
| Depth | 10.12 in |
| Baffle | Double, 1.5 in |
| Made for | Dayton Audio Ultimax II UMII18 |
