JL Audio
JL Audio MX280/4 4-channel marine amplifier
319,00 €
The JL Audio® MX280/4 is a compact 4-channel Class D full-range amplifier designed for use in boats, motorcycles, ATVs, UTVs and other powersports applications. The amplifier uses JL Audio’s patented NexD™ switching technology, which delivers high efficiency, clean sound reproduction and low current draw. Thanks to its compact, corrosion-resistant enclosure and IPX7 water resistance, the MX280/4 is well suited even to the most demanding environments.
In stock
We install it in our Maleva 2C workshop in Tallinn. Ask for a time and a quote.
Description
The MX280/4 can power up to four speakers or be bridged to create two higher-power channels. Independent front and rear channel filters allow you to select full-range, high-pass or low-pass mode, making the amplifier suitable for both speakers and smaller subwoofers. In addition, the amplifier supports both RCA low-level and high-level speaker inputs, which simplifies connection to both factory and aftermarket audio systems.
The JL Audio® MX280/4 is an ideal choice for building a high-quality marine and powersport Hi-Fi system. Powerful Class D technology, a reliable construction and versatile connectivity options deliver clean, dynamic sound even in demanding conditions.
Additional information
| Type | 4-channel full-range amplifier |
|---|---|
| Amplifier class | Class D NexD™ |
| Number of channels | 4 |
| Total power | 280 W |
| RMS power @ 14.4 V / 4 Ω | 4 × 50 W |
| RMS power @ 14.4 V / 3 Ω | 4 × 64 W |
| RMS power @ 14.4 V / 2 Ω | 4 × 70 W |
| RMS power bridged @ 4 Ω | 2 × 140 W |
| RMS power @ 12.5 V / 4 Ω | 4 × 36 W |
| RMS power @ 12.5 V / 3 Ω | 4 × 47 W |
| RMS power @ 12.5 V / 2 Ω | 4 × 52 W |
| RMS power bridged @ 4 Ω (12.5 V) | 2 × 100 W |
| Frequency response | 20 Hz – 20 kHz (+0, -1 dB) |
| Extended frequency response | 6.3 Hz – 30 kHz (+0, -3 dB) |
| Signal-to-noise ratio | 89.5 dB (A-weighted, referenced to rated power) |
| Damping factor | >60 @ 4 Ω, >30 @ 2 Ω |
| THD+N | <1% |
| Input sensitivity | 250 mV – 4 V (Low) or 750 mV – 15 V (High) |
| Filters | high-pass or low-pass filter (switchable) |
| Filter frequency | 35–300 Hz |
| Filter slope | 12 dB/oct |
| Input mode | 2 / 3 / 4 channels |
| Inputs | RCA low-level and high-level speaker inputs |
| Recommended power/ground cable | 8 AWG |
| Fuse | 35 A |
| Operating voltage | 11–15 V DC |
| Water resistance | IPX7 |
| Enclosure | corrosion-resistant die-cast aluminium |
| Dimensions | 220 × 45 × 78.5 mm |
| Weight | 1.44 kg |





