DS18 HYDRO NXL-6SL/WH 6.5″
September 2, 2026
DS18 HYDRO MP4/WH 4″
September 2, 2026
Original price was: $9,300.00.$9,000.00Current price is: $9,000.00.
4″ IPX5 marine coaxial speakers with 50W RMS, 150W Max power handling and UV-resistant all-weather construction.
Stock: available
DS18 HYDRO MP4/BK 4″ 2-Way Marine Coaxial Speakers
Overview
The DS18 HYDRO MP4/BK is a pair of 4-inch 2-way marine coaxial speakers engineered to deliver crisp, full-range audio in compact installations. Designed for boats, personal watercraft, UTVs, ATVs, golf carts, and other outdoor vehicles, these speakers combine excellent sound quality with dependable all-weather performance.
Built to withstand harsh marine conditions, the MP4/BK features an IPX5 water-resistant design, UV-resistant materials, and corrosion-resistant components for long-lasting durability. Their compact size makes them an excellent upgrade where installation space is limited while still providing powerful, balanced sound.
Main Features
- 4″ 2-way marine coaxial speakers
- 50W RMS / 150W Max power handling
- 4 Ohm impedance
- IPX5 water-resistant construction
- UV-resistant materials
- Ferrite woofer magnet
- Neodymium tweeter magnet
- High-efficiency 90 dB sensitivity
- Corrosion-resistant steel basket
- Sold as a pair
Specifications
| Specification | Value |
|---|---|
| Brand | DS18 |
| Series | HYDRO |
| Model | MP4/BK |
| Part Number | MP4/BK |
| Speaker Type | 2-Way Marine Coaxial Speaker |
| Size | 4″ (104 mm) |
| Color | Black |
| RMS Power | 50 W |
| Maximum Power | 150 W |
| Nominal Impedance | 4 Ω |
| Frequency Response | 60 Hz – 20 kHz |
| Sensitivity | 90 dB (1W/1m) |
| Recommended High-Pass Crossover | 80 Hz |
| Voice Coil Diameter | 1″ (25.4 mm) |
| Woofer Magnet | Ferrite (11 oz) |
| Tweeter Magnet | Neodymium |
| Basket Material | Steel with Salt Protection Coating |
| Cone Material | UV-Resistant Polypropylene |
| Surround Material | Butyl Rubber |
| Waterproof Rating | IPX5 |
| UV Resistant | Yes |
| Overall Diameter | 138 mm (5.43″) |
| Cutout Diameter | 104 mm (4.10″) |
| Mounting Depth | 51 mm (2.0″) |
| Overall Depth | 77 mm (3.0″) |
| Sold As | Pair |
Package Contents
- 2 × DS18 HYDRO MP4/BK 4″ Marine Speakers
- Installation hardware
- User manual
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