Description
Polk Ultramarine 7.7" Black Marine Speakers | Boat Supply Store
Engineered for superior sonic performance in demanding marine environments, these 7.7-inch coaxial speakers provide 100W RMS power handling for robust audio output. Their UV-resistant polypropylene cone and sealed acoustic design ensure durability against saltwater spray and direct sun exposure common on offshore fishing platforms. Install them on your center console or flybridge to clearly project music over engine noise and wind.
Key Features
- Withstand harsh marine conditions with a UV-resistant polypropylene cone and Santoprene surround.
- Experience clear, consistent audio with a sealed acoustic design and a 1" Teteron tweeter.
- Enjoy powerful sound from 100W RMS power handling.
- Prevent corrosion with gold-plated terminal connections.
- Ensure long-lasting performance with a one-piece basket construction.
- Mount easily with a 7.7-inch diameter and 6.5-inch mounting depth.
- Protect against water ingress with an IP56 rating.
- Achieve optimal sound projection with a 2-way coaxial design.
Specifications
| Product Specifications | |
|---|---|
| Speaker Size | 7.7 inches |
| Type | 2-Way Coaxial |
| Power Handling (RMS) | 100W |
| Power Handling (Peak) | 200W |
| Frequency Response | 35Hz - 20kHz |
| Sensitivity | 90 dB |
| Impedance | 4 ohms |
| Mounting Depth | 6.5 inches |
| Cutout Diameter | 7 inches |
| Tweeter Material | Teteron |
| Cone Material | Polypropylene |
| Surround Material | Santoprene |
| Grille Material | UV-Resistant Plastic |
| Terminal Type | Gold-Plated |
| Water Resistance Rating | IP56 |
Who This Is For
Boaters requiring durable, high-fidelity audio solutions that can withstand the rigors of saltwater environments and intense sun exposure. Ideal for upgrading sound systems on performance boats, cruisers, and offshore fishing vessels.
How It Compares
| Feature | Polk Ultramarine 7.7" Black Marine Speakers | JL Audio |
|---|---|---|
| Speaker Size | 7.7 inches | 7.7 inches |
| Power Handling (RMS) | 100W | 75W |
| Tweeter Material | Teteron | Silk |
| Water Resistance Rating | IP56 | IP65 |
| Mounting Depth | 6.5 inches | 6.9 inches |
Common Concerns Answered
Will these speakers corrode in a saltwater environment?
The Polk Ultramarine speakers are engineered for marine use with gold-plated terminal connections and a one-piece basket construction to actively resist corrosion, ensuring longevity even in high-salinity conditions.
Are these speakers truly waterproof enough for deck washdowns?
With an IP56 rating, these speakers are protected against dust ingress and powerful water jets, meaning they can withstand direct spray from deck washdowns and waves.
How do the 7.7-inch speakers compare in size to standard 6.5-inch marine speakers?
The 7.7-inch speakers offer a larger cone area than standard 6.5-inch speakers, which generally translates to better bass response and higher output for a more impactful audio experience on the water.
Frequently Asked Questions
What is the recommended power output for these speakers?
These speakers are rated for 100W RMS, meaning they perform optimally with amplifiers delivering around that continuous power output per channel for balanced and clear sound.
Can these speakers be mounted in a location exposed to direct sunlight?
Yes, the UV-resistant polypropylene cone and grille materials are specifically designed to resist degradation from prolonged exposure to direct sunlight.
What is the effective range of sound these speakers produce?
The frequency response ranges from 35Hz to 20kHz, covering deep bass notes to crisp highs, ensuring a full-spectrum audio reproduction suitable for various music genres.
Are these speakers compatible with standard marine stereo systems?
With a 4-ohm impedance, these speakers are compatible with most standard marine stereo receivers designed for 4-ohm loads, providing flexibility in system configuration.
How much space is required for installation?
You will need a mounting depth of 6.5 inches and a cutout diameter of 7 inches to properly install these 7.7-inch marine speakers.
