JL Audio M-MCPV3-NA ETXv3 Speaker Fixture for Nautique Tower

The JL Audio M-MCPV3-NA is a purpose-built mounting fixture set for late-model Nautique boats. It takes two of JL Audio's ETXv2 or ETXv3 enclosed tower speakers and locks them onto the factory tower position Nautique used from 2009 through 2016. Low-profile, clean, and built to put up with real time on the water.

This isn't a universal clamp you shim to fit. It's shaped and finished to match the tower geometry on those model-year boats, so the speakers sit where they should and the whole setup looks like it came from the factory. Each set includes the fixtures for two speakers plus the stainless steel hardware to bolt everything down. The aluminum body wears a clear anodized finish, which is the right call for something that lives out in the sun and salt all season.

Who's this for? Anyone running a Nautique wakeboat from that 2009 to 2016 window who wants to add or upgrade to ETX tower speakers. If that's you, this is the bracket that turns the job into a bolt-on. It clamps to the existing tower tube, so you're not drilling into your tower or fabricating anything. One tip before you order: measure your tower tube diameter and confirm it matches. Towers vary, and a quick check up front saves a return.

It's also worth knowing this fixture spans two generations of the ETX line. Whether you're mounting the older ETXv2 enclosures or the current ETXv3, the M-MCPV3-NA is designed to carry either one. So if you're upgrading speakers down the road but keeping the same tower, the bracket can usually stay put.

Positioning is half of what makes tower speakers sound good, and that's really what a dedicated fixture like this buys you. Because it's matched to the Nautique tower, the ETX enclosures end up aimed back at the boat where the riders and the crew actually are, not scattered off at odd angles the way a generic clamp can leave them. Get the speakers pointed right and you'll hear the difference behind the boat, especially at wake-shaping speeds where wind and water are competing for your ears.

The low-profile design is the part boaters tend to appreciate most after the fact. It keeps the ETX enclosures tucked in close to the tube instead of standing them off on tall clamps. That matters when you've got a bimini folding down or board racks loaded up. Less bulk means fewer things fighting for the same space when the tower's full.

A word on fitment, because it trips people up. This fixture is cut for the pre-2017 Nautique tower. Boats from 2017 on use a different clamp radius, so this set won't line up on a newer tower. If your boat is a 2017 or later, this isn't the one for you, and we'd rather tell you that now than have you wrestle it on the trailer.

Out on the water, a couple of things are worth knowing. The clear anodized finish holds up well, but where the clamps grip the tower you may see a little white oxidation build up over a few seasons. That's cosmetic and normal for anodized aluminum against a polished tube. The included stainless hardware is corrosion-resistant, but stainless can still gall and seize after a season in saltwater, so a dab of anti-seize on the threads at install makes future service a lot easier. And because a tower sees constant vibration at speed, it's smart to check the bolts after your first few long runs. A little thread locker or a set of nylon locknuts keeps everything snug over the long haul.

One thing to be clear about: this is the fixture, not the speakers. You supply your own ETXv2 or ETXv3 enclosed tower speakers, and the M-MCPV3-NA gives them a clean, factory-style home on your Nautique tower. It ships as a set of two, one fixture for each speaker, with the stainless hardware in the box. Rig it right and it'll ride quiet and look sharp for years.