Description
DS18 NXL-N4BT
The DS18 NXL-N4BT is a 4-channel full-range Class D marine and powersports amplifier with a built-in Bluetooth 5.1 receiver, designed for rugged outdoor audio systems on boats, UTVs, ATVs, motorcycles, and other environments where weather resistance and compact size matter. This amplifier delivers reliable power across its channels while allowing you to stream music wirelessly from your smartphone or Bluetooth device without needing a separate head unit. With selectable crossovers, multiple channel configuration options (full range, HPF, LPF), and an IP67 waterproof rating, it’s ideal for outdoor and marine audio setups requiring both power and convenience.
Specifications
| Specification | Details |
|---|---|
| SKU | NXL-N4BT |
| Total Watts (Peak) | 1800W |
| RMS Power @ 4Ω | 4 × 100W |
| RMS Power @ 2Ω | 4 × 150W |
| RMS Power @ 4Ω (Bridge) | 2 × 300W |
AUDIO
| Specification | Details |
|---|---|
| Frequency Response | 20Hz – 20KHz |
| Signal to Noise Ratio (1W @ 4Ω) | 90dB |
| Total Harmonic Distortion (THD) | 0.1% |
| Low Level Input Range | 200mV – 5V |
| Selectable X-Over | HPF / LPF / FULL |
| X-Over Filter Range | 40 – 500Hz |
| Bass Boost | No |
| Infrasonic Filter | No |
BT SPECS
| Specification | Details |
|---|---|
| Bluetooth Name | DS18 NXL-N4BT |
| Bluetooth Version | 5.1 |
| Services | Audio Stream |
| Audio Protocols | A2DP 1.3.1 |
| Audio Codec Supported | SBC / AAC |
| Sample Rate | 48 kHz / 24-bit |
| Bitrate | SBC 328 kbps / AAC 576 kbps |
| Bitrate Depth | 24 bits |
| Frequency Range | 20Hz – 20kHz |
FEATURES
| Specification | Details |
|---|---|
| Amplifier Class | Digital |
| Amplifier Type | Stereo Full Range |
| Number of Channels | 4 |
| Minimum Impedance | 2Ω (Stereo) / 4Ω (Bridge) |
| LED Indicator | Power / Protection |
| Power Input Size | Wired 8Ga OFC |
| Fuse Size | 25A |
| Thermal Protection | Yes |
| Overload Protection | Yes |
| Waterproof Rating | IP67 |
MEASUREMENT
| Specification | Details |
|---|---|
| Overall Length | 7.87 in / 200 mm |
| Overall Width | 3.67 in / 93.4 mm |
| Overall Height | 1.56 in / 39.8 mm |
| Heatsink Length | 7.16 in / 182 mm |
| Gross Single Unit Weight | 2.8 lb / 1.3 kg |
Product Overview
Ultra-Compact Waterproof 4-Channel Full-Range Amplifier with Bluetooth 5.1 Receiver Built-In
The NXL-N4BT takes a high-powered DS18 amplifier and integrates Bluetooth 5.1 streaming for full-range audio performance and wireless control in a sealed, IPX67-rated chassis.
4 Channel Power
With up to 1800W Peak, 4 x 100W RMS @ 4Ω, and 4x150W RMS @ 2Ω: this amplifier pushes full-range audio across your mids and highs leaving the perfect amount of headroom. Bridge to 2x300W RMS @ 4Ω for more flexibility in custom setups.
Seamless Bluetooth Streaming
Bluetooth 5.1 lets you stream directly from your phone or device with zero signal loss. With support for SBC/AAC codecs, 24-bit/48kHz audio, and A2DP 1.3.1, this amp delivers clean signal and rich fidelity wirelessly.
DSP-Level Control with Selectable Crossover
Fine-tune your output with built-in HPF, LPF, or Full range crossover settings, adjustable between 40–500Hz. Power components, coaxials, or a small sub with an amp that adapts to your system.
Marine Tough
Only 7.87” long and under 1.6” tall, the NXL-N4BT fits in gloveboxes, under seats, side panels: anywhere space is tight. And with thermal, overload, short circuit, and voltage protection built-in, you’ll stay powered safely on any terrain.
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