JL AUDIO XD-Serie 4CH AMP HX280/4 (Class D)
4-Channel Class D Full-Range Amplifier, 70 W x 4 @ 2 Ω / 50 W x 4 @ 4 Ω – 14.4V
Engineered specifically for powersports applications, the 4-channel HX280/4 amplifier employs our high-speed NexD™ switching design to deliver plenty of clean power, without straining charging systems. Its tiny, cast aluminum chassis is highly resistant to corrosion, with an IPX6 water-resistance rating, making it perfect for motorcycles, ATV’s or other utility vehicles.
Generating a solid 50W x 4 into 4 ohms (14.4V, 1% THD), the HX280/4 is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a potent 140W x 2 into 4 ohms.
Other features include independent front and rear crossovers with selectable full-range, high-pass or low-pass filter controls and a dual-range input section that accepts a wide range of input voltage levels, from line-level all the way to high-power speaker level signals.
This amplifier features a black powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability.
|Frequency Response||20 Hz – 20 kHz ( 0, -1dB)|
|S/N Ratio, referred to highest rated power||>89.5 dB below rated power (A-weighted, 20 Hz – 20 kHz noise bandwidth)|
|S/N Ratio, referred to 1 W||>70.5 dB (A-weighted, 20 Hz – 20 kHz noise bandwidth)|
|Damping Factor @ 4 Ω||>60 / 50 Hz|
|Damping Factor @ 2 Ω||>30 / 50 Hz|
|THD N @ Rated Power||<1% @ 2 Ω per Ch.|
|Input Voltage Range @ RCA Inputs||Switchable from 250 mV – 4 V RMS (Low) to 750 mV – 15 V RMS (High)|
|Min.Copper Power / Ground Wire Gauge||8 AWG wire|
|Fuse Rating||35 A (AFS, AGU or MaxiFuse™)|
|Filter Mode(s)||Low-Pass or High-Pass|
|Filter Slope(s)||12 dB/octave|
|Filter Frequency Range||35 Hz – 300 Hz|
|Detented, Calibrated Filter Freq. Potentiometers||Yes|
|Filter Defeat Function||Yes|
|Remote Level Control||No|
|Remote Level Modes||N/A|
|Channel Input Mode Switch||Yes (2/3/4 ch.)|
|Pass-Through Preamp Output||None|
|Source Channel Selection for PreOuts||N/A|
|Height (H)||1.77 in / 45 mm|
|Width (W)||8.66 in / 220 mm|
|Depth (D)||3.09 in / 78.5 mm|
|Net Weight||3.18 lb / 1.44 kg|