This Ocean Breeze Marine Accessories spacer is a mounting ring built for the Wet Sounds Revo 12 HP/FA S4 series of 12-inch marine subwoofers. It solves a common installation problem: not enough depth behind the mounting surface to seat the subwoofer cleanly. By adding 0.50 inches of standoff, the ring gives the driver the clearance it needs when the recess or panel cavity runs shallow. It's aimed at installers and boat owners fitting Wet Sounds 12-inch subs into helm panels, transoms, or tower enclosures where factory depth falls short. Browse our full lineup of marine subwoofers if you're still building out the system.
Each ring is machined from King Starboard, the marine-grade plastic that holds up to water, salt, and UV without warping or absorbing moisture. The outer diameter measures 12.68 inches (322 mm), with a bolt hole circle of 12.26 inches (311 mm) and a center mounting hole of 11.26 inches (286 mm) to match the factory cutout pattern. Thickness is 0.50 inches (12.7 mm), and the edge carries a 1/16 inch round profile for a finished look against the mounting surface. The bolt and cutout dimensions are cut to standard tolerances matching factory specifications, so the subwoofer drops in without rework. Compatible models include the Revo 12 HP S4-B V2, Revo 12 FA S4-W V2, Revo 12 FA S2-B V2, Revo 12 FA S2-W, and Revo 12 FA S4-B V2.
Reach for this spacer when a 12-inch Wet Sounds sub won't seat flush because the mounting cavity is too shallow, or when you want to raise the driver off a panel for a cleaner finish. It's a straightforward fix during a fresh build or a retrofit, and the black finish blends with darker helm and tower surfaces. The set ships as a pair, covering a single subwoofer install. Pair it with the right hardware and cabling from our marine audio accessories and amplifiers to finish the system.
| Specification |
Detail |
| Brand | Ocean Breeze Marine Accessories |
| Model/MPN | WS-REV12-FAHP-50-BLK |
| SKU | CW88424 |
| UPC | 616050458199 |
| Shipping Weight | 1 lb |
| Material | King Starboard (marine-grade plastic) |
| Outer Diameter | 12.68 in (322 mm) |
| Bolt Hole Circle Diameter | 12.26 in (311 mm) |
| Mounting Hole Diameter | 11.26 in (286 mm) |
| Thickness | 0.50 in (12.7 mm) |
| Edge Profile | 1/16 in round |
| Color | Black |
| Packaging | Sold as a pair |
| Compatibility | Wet Sounds Revo 12 HP/FA S4 series (Revo 12 HP S4-B V2, FA S4-W V2, FA S2-B V2, FA S2-W, FA S4-B V2) |
Frequently Asked Questions
What does this spacer do?
It adds 0.50 inches of mounting depth behind a Wet Sounds Revo 12 HP/FA S4 subwoofer. When the panel cavity or recess is too shallow to seat the driver flush, the ring provides the extra standoff so the subwoofer mounts cleanly without rework.
Is this sold as a single ring or a pair?
It ships as a pair. One pair covers a single subwoofer installation, giving you the spacing material needed for the front and mounting interface during the build.
Which subwoofers does it fit?
It fits the Wet Sounds Revo 12 HP/FA S4 series, including the Revo 12 HP S4-B V2, Revo 12 FA S4-W V2, Revo 12 FA S2-B V2, Revo 12 FA S2-W, and Revo 12 FA S4-B V2. The bolt and cutout dimensions match the factory pattern for these models.
What material is the spacer made from?
It's machined from King Starboard, a marine-grade plastic. The material resists water absorption, salt, and UV exposure, so it holds up to the conditions a boat install puts on mounting hardware without warping or degrading.
What are the exact dimensions?
The outer diameter is 12.68 inches (322 mm), the bolt hole circle diameter is 12.26 inches (311 mm), and the center mounting hole is 11.26 inches (286 mm). Thickness is 0.50 inches (12.7 mm) with a 1/16 inch round edge.
