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JL Audio HX280/4

280W 4-Ch Class D Full-Range Ultra-Compact Amplifier for Powersport Vehicles / SSVs / UTVs / Motorcycles / Muscle Cars / HotRods / Cars

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• 50W x 4 @ 4ohms , 70W x 4 @ 2ohms
• NexD™ ultra-high-speed switching design
• Black powder-coated finish
• Gasketed cover for the controls
• Stainless steel hardware for durability
• Accepts RCA (low-level) & Speaker-level (high-level) signal
• Signal to Noise Ration: 89.5 dB

Learn more about the hx2804

We apologize

This item has been discontinued

Product Highlights


• 50W x 4 @ 4ohms , 70W x 4 @ 2ohms
• NexD™ ultra-high-speed switching design
• Black powder-coated finish
• Gasketed cover for the controls
• Stainless steel hardware for durability
• Accepts RCA (low-level) & Speaker-level (high-level) signal
• Signal to Noise Ration: 89.5 dB

Description


JL Audio brand icon

Authorized dealer

JL Audio HX280/4

HX280/4 - 4-channel Class D Full-Range Amplifier

Engineered specifically for powersports applications, the 4-channel HX280/4 amplifier employs JL Audio's high-speed NexD switching design to pack a serious full-range punch, 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.

HX280/4 Side View

Key Features:

Small Footprint, Big Kick

The JL Audio HX280/4 is clearly designed to be as small as possible without sacrificing the quality and performance we all expect from a JL Audio product. At 1.77" x 3.09" x 8.66" the JL Audio HX280/4 is one of the smallest amplifiers on the market. When compared to its small footprint, the engineering is extraordinary considering the amp is equipped with a proper bank of settings - including a 12 dB per octave filter slope - and true full range frequency response (20 Hz - 20,000 Hz) . Putting the 'nerdy' figures aside, and you still have an amplifier that put outs solid modest power for any sized setup - 50W x 4 @ 4Ω , 70W x 4 @ 2Ω , & 140W x 2 @ @ 4Ω (Bridged)

NexD Switching Technology

JL Audio have taken the simple fixed PWM approach - found in almost all common amplifiers - and enhanced it with a very high switching frequency: 400 kHz, which is exponentially higher than most Class D Full-range amplifiers. This pushes the amplifier's bandwidth to a much higher frequency than seen before, and still provide minimal distortion and improved efficiency, while keeping typically bulky circuity more compact. Your speakers will reward you with crisp, clear performance. The bottom line is simply great audio: clean, powerful and reliable.





 

General Features:

  • 4-Channel Class D Full Range Amplifier
  • RMS Power Rating @ 14.4 V:
    • 4 ohms: 50 watts x 4 chan.

    •  
    • 2 ohms: 70 watts x 4 chan.
    • Bridged 4 ohms: 140 watts x 2 chan.
  • RMS Power Rating @ 12.5 V:
    • 4 ohms: 36 watts x 4 chan.
    • 2 ohms: 52 watts x 4 chan.
    • Bridged 4 ohms: 100 watts x 2 chan.
  • NexD ultra-high-speed switching design
  • Black powder-coated finish
  • Gasketed cover for the controls
  • Stainless steel hardware for durability
  • LED power (green) and protect (red) indicators
  • Accepts RCA (low-level) & Speaker-level (high-level) signal
  • Switchable Input sensitivity: 250 mV-4 V (Low) to 750 mV-15 V (High)

  •  
  • Channel Input Mode Switch: 2 / 3 / 4
  • Switchable filter modes: Low-Pass / High-Pass
  • Variable filter: 35 - 300 Hz, 12 dB/octave
  • Frequency Response: 20 - 20,000 Hz
  • Total Harmonic Distortion (THD): <1.0%
  • Signal to Noise Ration: 89.5 dB
  • Damping Factor: >60
  • Fuse Rating: 35A x 1
  • Dimensions: 8.66"W x 3.09"D x 1.77"H
  • 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty


Check out the JL Audio HX280/4 Owner's Manual

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
50 watts x 4 channel
RMS Power @ 2 ohms
70 watts x 4 channel
Bridged RMS Power
140 watts x 2 channel
Amplifier Specifications
Series
HX Series
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
280 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
<1.0%
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
35 - 300 Hz
Low-Pass Crossover Frequency
35 - 300 Hz
Signal-to-Noise Ratio
89.5 dB
Remote bass/level controller
No
Fuse Rating
35A x 1 
Strappable
No
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

HX280/4

Weight:

5.00lbs

Internal SKU:

hx2804

Internal Product ID:

93400

Product and How-to Videos


  • JL Audio HX300/1 & MHX300/1 Car and Marine Amplifiers | Product Overview
  • JL Audio MHX280/4 Marine Amplifier Dyno Test | SMD D'Amore AD-1

Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Just what my Harley Needed

I needed a small 4 channel amp for my Harley with power so that I could hear my music over the engine. This amp was the perfect solution and now I can listen to my music loud and clearly when I am cruising on the highway at 75 MPH. There are very few mini amplifiers available that can provide the quality and power that the JL Audio HX280/4 can. I have tried out a few in the past and nothing compares.

By Andrew Stellman on June 30, 2016 Checkmark Icon Verified purchase

GOOD THINGS COME IN SMALL PACKAGES

Some of you will appreciate that more than others (lol) but I will say that this small amp is definitely living up to the JL name.. they don't skimp out on quality in production here.. this here little amp has lived up to expectations and survived many battles for me. kudos to JL

By Sam on June 29, 2016 Checkmark Icon Verified purchase

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