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JL Audio XDM600/1 Mono car/marine subwoofer amplifier — 600 watts RMS x 1 at 2 ohms

Item # 13698683

JL Audio combined the features of their best-selling M Series marine amplifiers and their high-tech XD Series car...

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JL Audio combined the features of their best-selling M Series marine amplifiers and their high-tech XD Series car...

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Item # 13698683

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$599.99 Sale: -$60.00 off
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About the JL Audio XDM600/1

Buck Pomerantz

High-tech, high-power sub amp for cars and boats

JL Audio combined the features of their best-selling M Series marine amplifiers and their high-tech XD Series car amplifiers to create the XDM600/1. The amp is built with marine-grade materials and features a selectable dual-mode power input filter for noise-free performance in either marine or automotive electrical environments. It plays your bass with true fidelity and impressive impact without straining your vehicle's electrical system, thanks to JL Audio's proprietary NexD™ ultra-high-speed and efficient amplifier technology.

High-tech, high-power sub amp for cars and boats

JL Audio combined the features of their best-selling M Series marine amplifiers and their high-tech XD Series car amplifiers to create the XDM600/1. The amp is built with marine-grade materials and features a selectable dual-mode power input filter for noise-free performance in either marine or automotive electrical environments. It plays your bass with true fidelity and impressive impact without straining your vehicle's electrical system, thanks to JL Audio's proprietary NexD™ ultra-high-speed and efficient amplifier technology.

Bass power and tone

The XDM600/1 mono amp can deliver up to 600 watts RMS to your subwoofer. Its low-pass filter features a choice of slopes for better control over the character of your bass sound. A subsonic filter allows you to tighten up your system's kick and gets rid of any inaudible, low-frequency information that could detract from your sub's performance.

Works with almost any vehicle's system

"Differential-balanced" inputs help keep the signals clear of outside noise and allow you to connect this amp to just about any stereo, even some factory radios. The speaker-level inputs feature two auto turn-on modes to facilitate factory system integration. An optional wired remote lets you tweak the volume of the bass from the driver's seat.

JL Audio XDM600/1

XDM600/1 connection panel

Subwoofer Wiring Diagrams

To see sample wiring diagrams for all common subwoofer/amplifier combinations, check out this informative article.

READ LESS

Product highlights:

  • mono car/marine subwoofer amplifier
    • 400 watts RMS x 1 at 4 ohms
    • 600 watts RMS x 1 at 2 ohms
  • variable low-pass filter (50-500 Hz, 12 or 24 dB/octave)
  • switchable subsonic filter (30 Hz, 24 dB/oct)
  • Class D amplifier design with NextD™ switching amp technology
  • differential-balanced inputs help eliminate noise
  • weather-resistant chassis: black powder-coat finish, gasketed control cover, stainless steel hardware
More info:
  • optional wired remote level control available
  • preamp and speaker-level inputs
    • switchable input filter (car/boat) eliminates interference from onboard high-current devices
    • speaker-level inputs handle up to 4Vrms (about 4 watts)
    • speaker-level inputs require Wire-to-RCA adapters
    • speaker-level inputs feature auto turn-on via DC offset or signal sensing
  • preamp outputs
  • wiring, fuse, and hardware not included with amplifier
    • 4-gauge power and ground leads and a 50-amp fuse recommended
  • 8-9/16"W x 2"H x 7-1/8"D
  • warranty: 2 years
  • MFR # 98683

What's in the box:

  • Mono car/marine amplifier
  • Self-adhesive JL Audio badge
  • 2.5mm Allen wrench
  • Owner's Manual
  • Warranty information

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More details on the JL Audio XDM600/1

Mark G.

Product Research

Features
Controls
Connections

Features
Marine Design: The JL Audio XDM600/1 is a monoblock amplifier built with marine-grade materials and designed for boat or car installations. The amplifier is finished in a sleek, black powder-coat and features a gasketed, removable top cover that protects the control panel.

Specifications: The XDM600/1 is rated at 400 watts RMS x 1-channel into 4Ω, 500 watts RMS x 1-channel into 3Ω, and 600 watts RMS x 1-channel into 2Ω; all measurements taken at 14.4 volts with no more than 1% THD+N. The Signal to Noise ratio is 87 dB at rated power and 67 dB at 1 watt (both A-weighted).

NexD Class D Technology: NexD is a switching amplifier design that combines exceptional audio quality with excellent efficiency and less complexity. This results in an affordable compact amplifier with exceptional audio quality and total efficiency.

Advanced Rollback Protection: The XDM-Series amplifiers employ advanced thermal and low-impedance protection to virtually eliminate annoying amplifier shut-down events. Should any XDM-Series amplifier overheat, its intelligent, unregulated power supply reacts by limiting available peak voltage until the amplifier returns to a safe temperature range. Likewise, if an impedance lower than optimal for the amplifier is present at the outputs, the XDM amplifier will roll back peak voltage to protect itself without shutting down.

Differential-Balanced Inputs: The amplifier features differential-balanced input architecture to effectively control noise and ensure compatibility with a wide variety of source units, including many OEM systems. Without resorting to line output converters, you can directly connect most OEM source units to the JL Audio amplifier without creating any noise or compatibility issues. Unlike conventional single-ended inputs, the differential-balanced design does not connect one side of the audio signal to chassis ground. This eliminates any voltage sensitivity between one input terminal and ground and greatly reduces the incidence of alternator whine in a typical car audio installation.

Note: You will need a speaker wire to RCA adaptor (136XDCLR2S, sold separately) to connect this amplifier to your headunit's speaker level outputs.

Protection Circuitry with Status LED: There is a single multi-color LED on the top panel to indicate the amplifier's operating status.

  • Flashing Green: The amplifier is powering up and audio output is muted.
  • Constant Green: The amplifier is turned on and operating normally.
  • Constant Red: Indicates the amplifier has exceeded its safe operating temperature, putting the amplifier into a self-protection mode which reduces the power output; the LED will return to green and the amplifier will resume normal, full-power operation when the heat sink temperature drops back to a safe level.
  • Constant Amber (Yellow): Indicates an over-current condition has occurred, accompanied by a muting of the affected amplifier channels (over-current can be caused by speaker impedance lower than recommended or a short-circuit in the speaker wiring).
  • LED Off: The only condition that will shut down an undamaged XDM600/1 completely is the battery voltage or remote turn-on voltage dropping below 10-volts.

Cooling System: The outer shell of the JL Audio amplifier is designed to dissipate heat from the amplifier circuitry. For optimum cooling performance, this outer shell should be exposed to as large a volume of air as possible. Enclosing the amplifier in a small, poorly ventilated chamber can lead to excessive heat build-up and degraded performance.

Controls

Control Panel Cover: The XDM600/1 features a Control Panel Security Cover which protects and hides the amplifier's controls. When installed, the cover ensures that the amplifier's settings are not accidentally changed, while creating a clean aesthetic look for the amplifier and your installation. The cover is installed at the factory and must be temporarily removed for access the amplifier's controls. The security cover is secured by two 2.5mm Allen-head machine screws.

Gain Setting: Using JL Audio's guided gain set up requires a digital AC voltmeter and a test CD (both sold separately) with a sine-wave test-tone recorded at 0 dB reference level in the frequency range to be amplified for that set of channels (approximately 50 Hz for subwoofer channels). The gain can also be set by ear with no additional equipment.

Input Filter: This 2-way switch can help eliminate electrical interference:

  • Car: This setting will be commonly used for most automotive or marine installations.
  • Boat: Select this setting if experiencing interference from high-current mechanical switches or devices (more common in marine craft).

Turn-On Mode: There are three options for turning the amp on, selected using the Turn-On Mode switch:

  • Remote: The amp turns on when +12 volts is applied to the remote terminal.
  • Offset: The amp turns on when a DC offset is detected on the channel 1 inputs (from a speaker level source).
  • Signal: The amp turns on when a full-range audio signal is detected on the channel 1 input (from a speaker level source).
Infrasonic Filter: The infrasonic filter, 24 dB/octave high-pass at 30 Hz, is switchable; on/off.

Crossover: The slope and low-pass crossover point are adjustable:

  • Mode/Slope: three position switch:
    • Off: The crossover is bypassed; assuming a full range signal is input, the output will be the full range.
    • 12 dB: The low-pass crossover slope is 12 dB/octave.
    • 24 dB: The low-pass crossover slope is 24 dB/octave.
  • Filter Frequency: A rotary control; sets the crossover point from 50 to 500 Hz.
Connections

Power/Ground/Turn-On Terminals: The amplifier features set-screw terminals for the power, ground, and remote turn-on connections.

  • Power and Ground: Accepts 4 AWG wire; a A 2.5mm Allen wrench is supplied for making connections
  • Remote Turn-On: Accepts 18 to 12 AWG wire; the same 2.5mm Allen wrench is used for making the connection

Note: The Amplifier is not equipped with a fuse. An external 50-amp fuse (not included) must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 50-amps, the original should be replaced with a 50-amp fuse.

Speaker Output Terminals: The XDM600/1 has two pair of subwoofer outputs, internally wired in parallel, making it easy to connect two subwoofers (minimum impedance 4Ω each when using both). The set-screw terminals will accept 16 to 8 AWG speaker wire. The included 2.5mm Allen wrench is used for making connections.

Preamp Inputs: The amplifier has one pair of differential-balanced stereo RCA jack inputs. In addition to preamp level signals, the RCA inputs are also used with speaker level signals (136XDCLR2S required and sold separately).

Preamp Outputs: The XDM600/1 incorporates a pass-through preamp output section, so that an additional amplifier can easily be connected to the same signal feeding the input. This preamp output signal is buffered to prevent noise and is always preamp level, regardless of the signal level feeding the input. The preamp output is not affected by the XDM600/1's internal crossover.

Remote Level Control: The amplifier features an RJ-14 telephone jack for adding an optional wired remote level control. With the addition of the optional wired remote (item number 136HDRLC, sold separately), you can control the output level of the amp from the front of your vehicle. If desired, multiple XDM amplifiers can be controlled from a single HD-RLC controller using a simple phone line splitter and multiple phone cables (all sold separately).

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Customer Q&A

1 question already asked

Q
How do you select between 400 watts RMS x 1 at 4 ohms or 600 watts RMS x 1 at 2 ohms? I didn't see anything the a manual about it. Thank you.
nathan  Jul 08, 2023
1 answer
A
The amp outputs the watts based on the ohms it sees from the connected subwoofer or subwoofers. For example, two 4 ohm subwoofers wired in parallel will present 2 ohms to an amp. When those two subwoofers are connected to this amp, it will output 600 watts RMS. We have product advisors here that can be reached by calling 1-800-324-9695 who can help match subwoofers to this amp.
jason  Jul 08, 2023 (Staff)

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