MX600/3

3-Channel Class D System Amplifier, 100 W x 2 + 400 W x 1 @ 2 Ω / 75 W x 2 + 250 W x 1 @ 4 Ω - 14.4V

Engineered specifically for powersports applications, the 3-channel MX600/3 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 75W x 2 into 4 ohms (14.4V, 1% THD), the MX600/3 is the perfect solution for driving a pair of speakers and a subwoofer. 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.

Rated Continuous (RMS) Power @ 14.4 V Main Channels @ 4 Ω 75 W RMS x 2 Main Channels @ 2 Ω 100 W RMS x 2 Main Channels - Bridged @ 4Ω 200 W RMS x 1 Subwoofer Channel @ 4 Ω 250 W RMS x 1 Subwoofer Channel @ 3 Ω 300 W RMS x 1 Subwoofer Channel @ 2 Ω 400 W RMS x 1 Subwoofer Channel @ 1.5 Ω N/A Rated Continuous (RMS) Power @ 12.5 V Main Channels @ 4 Ω 50 W RMS x 2 Main Channels @ 2 Ω 80 W RMS x 2 Main Channels - Bridged @ 4Ω 100 W RMS x 1 Subwoofer Channel @ 4 Ω 200 W RMS x 1 Subwoofer Channel @ 3 Ω 250 W RMS x 1 Subwoofer Channel @ 2 Ω 300 W RMS x 1 Subwoofer Channel @ 1.5 Ω N/A General Specifications Frequency Response 20 Hz - 20 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >88 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >68 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >92 / 50 Hz Damping Factor @ 2 Ω >43 / 50 Hz THD+N @ Rated Power (Main Channels) <1% @ 2 Ω per Ch. THD+N @ Rated Power (Subwoofer Channels) <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs Switchable from 250 mV - 4 V RMS (Low) to 580 mV - 14 V RMS (High) Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 60 A (AFS, AGU or MaxiFuse™) Signal Processing Filter Slope(s) 12 dB/octave Filter Frequency Range: Channels 1 & 2 (front) 35 Hz - 300 Hz Filter Frequency Range: Subwoofer Channel 40 Hz - 400 Hz Filter Mode(s): Channels 1 & 2 (front) High-Pass only Filter Mode(s): Subwoofer Channel Low-Pass only Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Subwoofer Level Control Optional (RBC-1) Remote Level Modes N/A Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output None Source Channel Selection for PreOuts N/A

NexD™ Switching Technology Summary: NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from pact amplifier designs. Detailed Information: Beginning with the original 'Slash' subwoofer amplifiers, JL Audio has been at the forefront of Class D amplifier design. Today, our flagship Single-Cycle Control™ technology sets the ultimate standard for Class D amplifier performance. The NexD™ amplifiers may be a bit plex, pact and more affordable, but they flow from the same minds that have set the trend in mobile amplifier technology for over a decade. Let's get a little nerdy... A traditional PWM switching amp design uses a fixed switching frequency and varies the pulse width based solely on the audio input signal to the pulse modulator. This basic approach assumes some ideal conditions, like a rock-steady power supply, that do not necessarily occur in a real, in-car installation. Power supply sag with signal causes distortion at all power levels with these designs, even well below clipping. The cure for this is feedback (a corrective signal sent back to the input side), but this es impractical as the audio frequency increases, making it a good solution for band-limited (subwoofer) amps, but not for full-range amplifiers. Taking the above into account when designing the NexD™ subwoofer amplifiers, we have taken the simple fixed PWM approach and enhanced it with a very high switching frequency: 240 kHz, which is about 4x higher than most Class D subwoofer amplifiers. This pushes the amplifier's bandwidth to at least 500 Hz with minimal distortion and improves efficiency, while keeping typically bulky circuity pact. Your subwoofers will reward you with tight, rock-solid bass performance.

For the full-range NexD™ amplifiers and channels we applied a variable, ultra-high speed version of the NexD™ technology (switching at well over 400 kHz). In these designs, a self-oscillating modulator with "feed-forward" sends information about the instantaneous power supply voltage to the modulator, combining this with the input signal to cancel out any distortion due to supply voltage fluctuation. This reduces distortion prior to applying feedback, simplifying the overall feedback loop design. The bottom line is simply great audio: clean, powerful and reliable.

Back to top Differential-Balanced Inputs Differential-Balanced Inputs Summary: JL Audio’s Differential-Balanced Inputs are engineered bat induced cable noise, which is mon problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels. Detailed Information: Today’s vehicles are equipped with sophisticated electronics capable of generating noise and interference that can intrude into the audio path, ruining the listening experience. Most audio equipment uses single-ended, ground-referenced RCA jacks to receive audio signals. This means that the RCA shield is connected directly to signal ground. This is a simple, cost effective input design that works well for short runs in noise free environments. In noisier environments, this method cannot reject mon mode noise that could be on both RCA conductors (shield and center conductor). By having more than one chassis-grounded RCA shield on a device, single-ended input designs are also more susceptible to ground loops. If noise is present on both conductors while the shield is connected to ground, the input amplifier will amplify the noise relative to the grounded RCA shield. When there are multiple RCA connections or any other conductors subjected to a magnetic field, this will cause a difference in potential across the RCA loop to be amplified at the grounded RCA as noise (a classic ground loop). JL Audio’s Differential-Balanced Input circuits measure the center pin of the RCA connection relative to the RCA shield, even when the shield is not connected to ground, and even when the voltages at both conductors are moving relative to ground. Because both the center conductor and the shield see high impedance to ground at the input, a ground loop cannot be formed, as there is no current flow to induce a voltage as noise. This works equally well with differential-balanced, or unbalanced signal sources, making this input patible with all standard car and marine audio equipment, using standard, unshielded, twisted-pair RCA cables. No special cables are required, unlike the fully balanced connections used in professional audio. Another benefit of the Differential-Balanced Input design is that it easily accepts low-level and high-level signals from a variety of factory head unit outputs and amplifiers, including single ended “ground referenced” sources, as well as Balanced or Unbalanced “Bridged or BTL” sources. This eliminates the need for Line Output Converters (LOCs) in most installation scenarios. The obvious question is: “Why don’t all car audio amplifiers use Differential-Balanced Inputs?” The answer is simple: it costs more. Executing a proper differential-balanced input section requires ponents and better ponents than a basic single-ended design, so you generally won’t find them on less expensive amplifiers.

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