Just installed a JL 13” sub in a generic JL box that is tiny. Mounted up super high at the front of the helm opening. I mounted it up against the backrest for the bow. Kinda hard to explain so I will post pics. I wish I took some pics when I had it all apart. I powered it with a Clarion 600w rms mono block and it simply pounds. The entire boat vibrates. It is definitely hitting above its weight class.
2020 Moomba Mojo
2008 Mastercraft Prostar 197 40th Anniversary
Owner Ness Lake Watersports
Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
Audio by Wetsounds, MTX, JL Audio, Clarion
15 X 13.00 ACME prop