NX654 vs NX524: Which Marine Speaker Fits Your Boat?

Quick Answer

Choose the NX654 if you have 6.5-inch cutouts and want a larger midrange for fuller sound; pick the NX524 if your boat only fits 5.25-inch speakers and you prefer a slightly larger dome tweeter.

Size Matters: Cutout and Coverage

The most obvious difference is physical size. The NX654 is a 6.5-inch speaker, while the NX524 is 5.25 inches. That size difference affects both where you can install them and how they sound. A larger cone moves more air, which generally gives you stronger bass and a fuller midrange. But if your boat already has 5.25-inch cutouts, the NX654 won't fit without modification.

Before you decide, measure your existing speaker holes. If you're replacing old speakers, the new ones need to match the cutout size unless you're prepared to enlarge or adapt the mounting surface. That's the first practical checkpoint in this comparison.

Tweeter and Midrange: The Sound Signature

Both speakers are 4-way systems with rubber surrounds and polypropylene cones, so they share the same basic build quality. The difference is in the driver configuration. The NX654 has a 1.37-inch midrange and a 0.5-inch dome tweeter. The NX524 has a smaller 1.18-inch midrange but a slightly larger 0.5-inch dome tweeter (listed as 0.5” or 12 mm).

A larger midrange driver can reproduce vocals and instruments with more presence, which is why the NX654 tends to sound more balanced for music with a lot of mid-frequency content. The NX524's tweeter is marginally bigger, which might give it a touch more sparkle on high frequencies, but the difference is subtle. The bigger gap is in the midrange.

Price and Value

Both speakers are budget-friendly, with the NX654 at $25.20 and the NX524 at $25.63. The price difference is negligible, so your decision should be based on fit and sound preference, not cost. You're getting similar build quality for nearly the same price, which makes the choice even more about your boat's existing setup.

Trade-Offs at a Glance

• Size vs. Fit: The NX654's 6.5-inch size offers more cone area for better bass, but it requires a 6.5-inch cutout. The NX524's 5.25-inch size fits smaller openings but sacrifices some low-end response. Measure your existing cutouts before choosing.
• Midrange vs. Tweeter: The NX654 has a larger 1.37-inch midrange for more vocal presence, while the NX524 has a slightly larger 0.5-inch dome tweeter for a touch more high-frequency detail. If you prioritize vocals, go with the NX654; if you want extra sparkle, the NX524's tweeter is marginally bigger.
• Price: Both speakers are nearly identical in price, so cost shouldn't be the deciding factor. Focus on fit and sound signature. Let size and sound preference guide your decision, not the $0.43 price difference.

Product Facts

• NX654: 4-way system with a 1.37” (35 mm) midrange and 0.5” (13 mm) dome tweeter The larger midrange driver gives the NX654 a fuller, more present sound for vocals and instruments, which is ideal for music lovers.

  

• NX524: 4-way system with a 1.18” (30 mm) midrange and .5” (12 mm) dome tweeters The slightly smaller midrange means less midrange punch, but the compact size fits boats with 5.25-inch cutouts.

  

Which One Fits You?

Best for

• Boat owners with 6.5-inch speaker cutouts who want a fuller midrange and stronger bass
• Listeners who play music with prominent vocals and instruments

Not for

• Boats with existing 5.25-inch cutouts where you don't want to modify the mounting surface
• Anyone who needs a larger tweeter for extra high-frequency detail