DS18 NXL-X850.4D 4-Channel Marine Amplifier
Key features
- 4-channel Class D amplification
- 300W RMS per channel at 2 ohms; 200W RMS per channel at 4 ohms
- Total Watts (Peak): 2400W
- RMS Power @ 4 ohm: 4 x 200W
- RMS Power @ 2 ohm: 4 x 300W
- RMS Power @ 4 ohm Bridge: 2 x 600W
DS18 NXL-X850.4D 4-Channel Marine Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Power multiple marine speakers from one amplifier with the DS18 NXL-X850.4D 4-channel marine amplifier. Its Class D design delivers 300W RMS per channel at 2 ohms or 200W RMS per channel at 4 ohms.
Key Features & Benefits
- Four amplified channels: Run multiple speakers from one unit.
- Selectable crossover: Choose HPF, Full, or LPF to match your installation.
- Bridgeable channels: Bridged output is rated at 2 x 600W RMS.
- Protection features: Thermal, overload, short-circuit output, and voltage input protection help guard the amplifier.
- Status indicators: Power, protection, and clip LEDs make operating status visible.
Technical Specifications
| Total Watts (Peak) | 2400W |
|---|---|
| RMS Power @ 4 ohm | 4 x 200W |
| RMS Power @ 2 ohm | 4 x 300W |
| Power @ 4 ohm Bridge | 2 x 600W |
| Frequency Response | 10Hz-20KHz |
| Signal to Noise Ratio 1W@4Ω | > 83dB |
| Efficiency @ 4ohm | 0.83 |
| Input Impedance | 20KΩ |
| Channel Separation | 60dB |
| Total Harmonic Distortion (THD) | < 0.04% |
| Low Level Input Range | 200mV-5V |
| Selectable X-Over | Yes (HPF/Full/LPF) |
| X-Over Filter Range | 40Hz-2KHz |
| Bass Boost Range | N/A |
| Bass Boost Frequency | N/A |
| Infrasonic Filter | No |
| Phase Selector | No |
| Amplifier Class | Digital |
| Amplifier Type | Stereo Full Range |
| Number of Channels | 4 |
| Minimum Impedance | 2 Ohms (Stereo) / 4 Ohm (Bridge) |
| Led Indicators | Power / Protection / Clip |
| Power Input Size | 8GA Tinned OFC |
| Fuse Size | 2 x 50A (100A) |
| Thermal Protection | Yes (78°C) |
| Over-Load Protection | Yes |
| Short Circuit Output Protection | Yes |
| Voltage Input Protection | Yes (7-16V) |
| Body Color / Finish | Black Brushed Aluminum |
| Overall Length | 11.8" / 301mm |
| Overall Wide | 4.4" / 112mm |
| Overall Height | 1.77" / 45mm |
| Heatsink Length | 10.2" / 261mm |
| Gross Single Unit Weight | 2.4kg |
Why Choose This Product?
The NXL-X850.4D gives you four channels in one marine amplifier, with published power ratings for both 2-ohm and 4-ohm loads. Its selectable HPF, Full, and LPF crossover settings let you choose an option suited to your speaker setup.
Use the per-channel ratings when planning a stereo installation, or consider the listed bridged rating when configuring bridged channels. Match speaker impedance and crossover settings to your installation.
Installation & Compatibility Notes
Check the amplifier’s mounting dimensions, wiring, and fuse requirements before installation. Follow the manufacturer’s instructions and keep connections protected from water. A marine rating does not replace proper installation or permit intentional submersion.
Frequently Asked Questions
How much power does the DS18 NXL-X850.4D provide?
It is rated at 4 x 200W RMS at 4 ohms and 4 x 300W RMS at 2 ohms. Bridged output is rated at 2 x 600W RMS at 4 ohms.
What speaker impedance does it support?
Minimum impedance is 2 ohms in stereo or 4 ohms when bridged. Match the speaker load to the configuration you plan to use.
Can I adjust the crossover setting?
Yes. Select HPF, Full, or LPF, with a crossover filter range of 40Hz-2KHz.
What should I check before installing it?
Check the 11.8" / 301mm length, 4.4" / 112mm width, and 1.77" / 45mm height, along with wiring and fuse requirements.
Explore More
Shop at 12 Volt Outlet for the DS18 NXL-X850.4D. Want to learn more about DS18? Explore our DS18 brand profile.
