This 2017 Tige R20 had the base level audio which consisted of 2 pair Wet Sounds Recon-6S and a Marine Audio brand media unit in the glove box and wired remote on helm.
The upgrades included;
Wet Sounds MC-1BB with the main screen on the helm in place of the old wired remote. The 4 volume zones are; bow, cabin, tower and woofer. HDPE plate to cover the opening left by the old media unit.
Rev-10 tower speakers with RGB LED rings and Fusion Signature series 4 chnl bridged for 400W rms to each
Wet Sounds Revo-12FA 2 ohm woofer under the helm driven with 400W rms from a Fusion Signature 5 chnl amp. RGB LED "Glow Kit" to illuminate the woofer cone. Existing cabin speakers moved to the 5 chnl amp now receiving 100W rms.
Wet Sounds RF-RGB LED controller to take care of the lights.
This model does not have tower LEDs as an option, so we used the vacant dock lights switch to power up/down the LED controller. The helm has a small structure built where the factory woofer would have been. Though not actually sealed, it is tight enough to be a constraint on an infinite-baffle woofer. So during the installation of the woofer, the back of the structure needs to be cut open in order for the back of the woofer to "breath" into the entire helm/bow cavity. This gives it plenty of air space to operate properly.
To wire the tower, it required the port side hinge pin to be removed and the tower blocked up out of the base. The hinge pin eye had to be unbolted from the bottom of the tube, in order to have access to the tower tube. Due to the tight bends, a normal fish tape would not work. I switched to floss tied to a small steel nut and a large magnet wrapped in painters tape. Even then, every weld was a catch point, which require the tower to be raised and lowered in order to work the nut past the welds.