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.
Wirelessly control your marine audio with DS18’s NXL-N4BT!
Key Features
- Built-In Bluetooth Receiver – Stream your favorite music wirelessly straight from your smartphone
- Ultra-Compact Size for Easy Installation
- Fully Aluminum Chassis Design
- IP67 Waterproof Rating
- Latest Full-Range Digital Design Based on IR Platform
Technical Data - Manual
DOWNLOAD THE USER MANUAL
GENERAL SPECS
SKU
NXL-N4BT
Total Watts (Peak)
1800W
RMS Power @ 4 ohm
4 x 100W
RMS Power @ 2 ohm
4 x 150W
RMS Power @ 4 ohm Bridge
2 x 300W
AUDIO
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 Range
No
Infrasonic Filter
No
BT SPECS
Bluetooth Name
DS18 NXL-N4BT
Version
5.1
Services
Audio Stream
Audio Protocols
A2DP1.3.1
Audio Codec Supported
SBC / AAC
Sample Rate
48k/bit
Bitrate
SBC 328kbps / AAC 576kbps
Bitrate Depth
24bits
Range
20Hz - 20kHz
FEATURES
Amplifier Class
Digital
Amplifier Type
Stereo Full Range
Number of Channels
1
Minimum Impedance
2 Ohms (Stereo / 4 Ohms Bridge)
LED Indicator
Power / Protection
Power Input Size
Wired 8Ga OFC
Fuse Size
25A
Thermal Protection
Yes
Overload Protection
Yes
Waterproof Rating
IP67
MEASUREMENT
Overall Length
7.87" / 200mm
Overall Wide
3.67" / 93.4mm
Overall Height
1.56" / 39.8mm
Heatsink Length
7.16" / 182mm
Gross Single Unit Weight
2.8Lb / 1.3Kg
