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White 7.7 inch coaxial marine speaker with ASA grille and sealed basket

MTX

MTX WET77-W 7.7" car speaker 75W RMS

SKU CH-21K0-VVVWD MPN WET77-W

A 7.7" coaxial speaker rated for 75W RMS with water-resistant polypropylene cone, sealed ABS basket and UV-stable ASA grille

  • Speaker unit size7.7 in (19.6 cm)
  • Handles 75W RMS for loud, clear output
  • 7" coaxial design fits factory or custom locations
  • Water-resistant polypropylene cone survives spray and humidity
  • Sealed ABS basket protects motor from moisture and debris
  • UV-stable ASA grille resists fading in direct sunlight

Marine-grade coaxial speaker

The MTX WET77-W is a 7.7" coaxial speaker built for marine and off-road environments. It handles up to 75W RMS power for clear output on the water or trail. The weather-resistant design suits factory locations or custom pods. Buyers needing a larger diameter or higher power handling should look elsewhere.

Sealed basket and UV-stable grille

A sealed ABS basket protects the motor structure from moisture and debris. The polypropylene cone resists water ingress while the ASA grille includes a UV inhibitor to prevent fading. Silicone-insulated tinsel leads and gold-plated terminals maintain reliable connections in damp conditions. No active cooling or amplification is integrated into the speaker itself.

Direct-fit flexibility for open-air installs

The speaker mounts in existing factory openings or aftermarket pods without proprietary brackets. Its coaxial layout keeps installation simple by combining mid-bass and tweeter in one frame. The sealed construction frees the builder from adding separate weatherproofing enclosures. Systems requiring component separation or external crossovers are not addressed by this design.

How it compares

Measured against everything we stock in Car Stereo Speakers, at today’s prices. Recalculated every night.

Price $127.99
Pricier than about 57% of the 379 comparable items (median $104.99).

Specifications

Product
Brand nameMTX
Audio & video
Speaker unit size7.7 in (19.6 cm)
Size & build
Shipping weight3.41 kg
Package size414 × 244 × 150 mm

Questions about this item

How do I install the WET77-W in a factory location and which step is often missed?

Mount the speaker using the existing factory holes, connect the gold-plated terminals with correct polarity, and seal the cutout — the step most often missed is applying marine-grade sealant around the basket flange to keep water out.

What part of the WET77-W will need replacement first after extended marine use?

The Teteron tweeter diaphragm is the most likely component to degrade from salt, UV and vibration before the polypropylene cone or sealed PVC basket.

At what power level does the WET77-W reach its thermal limit during continuous playback?

The 75 W RMS rating marks the continuous thermal limit; running the speaker above this level for extended periods will cause voice-coil overheating and eventual failure.

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