Wet Sounds REVO12FAS4BV2 Revo FA Series Free Air Subwoofer - 12" diameter alt-4155-3601 It's compatible with the GHS

It's compatible with the GHS 11 second-station handset

wing and bolt-on brackets

Eliminates the need for splicing or rewiring

waterskiing

Wet Sounds REVO12FAS4BV2 Revo FA Series Free Air Subwoofer - 12" diameter alt-4155-3601 It's compatible with the GHSFree Air REVO subs are recommended primarily for Infinite Baffle (Free Air) applications where a dedicated subwoofer enclosure is not available or practical. REVO Subwoofers are sold without grills. Many different grill designs are available separately for all versions of 10 & 12 REVO HP & FA subwoofers. This will enable users to have matching grills on both REVO Coaxial In Boat speakers & REVO Subwoofers. Optional RGB LED Kits are available to fit