Description
DS18 NXL-N4 HYDRO Compact 4-Channel Marine Amplifier, 4 x 100W RMS at 4 Ohms, IP67
Power four speakers from a compact marine amplifier that fits where larger chassis cannot. The NXL-N4 combines flexible channel configurations with adjustable crossovers for a boat or powersports audio system.
Overview
Choose the channel layout your system needs
The NXL-N4 supplies four channels of full-range Class D amplification in a small aluminum chassis. It delivers 4 x 100W RMS at 4 ohms or 4 x 150W RMS at 2 ohms. For a two-channel layout, bridging provides 2 x 300W RMS into 4-ohm loads. This flexibility supports a four-speaker installation or a system that needs more power across fewer channels.
Key features
NXL-N4 at a glance
- Run four speakers at 100W RMS each into 4 ohms, or bridge the amplifier for two 300W RMS channels at 4 ohms.
- A compact Class D chassis measures just 7.87 inches long, helping you fit amplification into tight installations.
- Select high-pass, low-pass, or full-range operation, with 40–500Hz crossover adjustment to suit the connected speakers.
- IP67-rated construction and a black-and-red aluminum housing suit marine and powersports audio installations.
- Power and protection LEDs aid troubleshooting, with safeguards against heat, overload, short circuits, and DC output.
Design and installation
Match the signal to the speakers
High-pass, low-pass, and full-range settings let you tailor the output to the connected speakers. The adjustable crossover spans 40–500Hz, while input sensitivity covers 0.2–5V for matching the amplifier to the source signal. The chassis measures 7.87 x 3.67 x 1.56 inches overall, leaving more installation flexibility in spaces where a conventional amplifier may not fit.
Power and performance
| Channels | 4 |
| Amplifier class | Class D, digital full range |
| RMS output at 4 ohms | 4 x 100W |
| RMS output at 2 ohms | 4 x 150W |
| Bridged RMS output at 4 ohms | 2 x 300W |
| Minimum load | 2 ohms stereo; 4 ohms bridged |
| Frequency response | 20Hz–20kHz |
| Signal-to-noise ratio | 90dB at 1W into 4 ohms |
| THD | 0.1% |
| Input sensitivity | 0.2–5V |
Control and construction
| Filter modes | High-pass, low-pass, full range |
| Crossover adjustment | 40–500Hz |
| Bass boost | No |
| Water resistance | IP67 |
| Housing | Black and red aluminum |
| Power connection | 10 AWG OFC wired input |
| Fuse | 25A |
| Indicators | Power and protection LEDs |
| Protection | Thermal, overload, DC output, short circuit, high voltage above 15V |
Dimensions and weight
| Overall length | 7.87 in |
| Overall width | 3.67 in |
| Overall height | 1.56 in |
| Heatsink length | 7.16 in |
| Product weight | 3 lb |