JL Audio XD600/1v2 Monoblock Class D Subwoofer Amplifier

JL Audio XD600/1v2

Monoblock Class D Subwoofer Amplifier, 600 W x 1 @ 2 Ω / 400 W x 1 @ 4 Ω - 14.4V This potent monoblock amplifier employs our high-speed NexD™ switching design to achieve unprecedented efficiency and amazing power output in a very compact chassis. Don't let the small size fool you, though... this amplifier is capable of serious subwoofer power, delivering a full 600 W of continuous power into a 2 ohm load (14.4V, 1% THD).
Targeted specifically for subwoofer applications, the XD600/1v2 includes a variable slope low-pass filter with continuously variable cutoff frequency selection from 50-500 Hz.
The XD600/1v2 also features the v2 Spec feature set, which consists of automatic turn-on capability (via signal sensing or DC-offset sensing), and a dual-range differential-balanced input section able to handle a wide range of input voltage levels. With the addition of an HD-RLC remote level control (sold separately), the amplifier's level can be directly controlled from the driver's seat.
This amplifier features a black powder-coat finish and a gasketed, brushed aluminum cover for the controls. Rated Continuous (RMS) Power @ 14.4 V

• @ 4 Ω 400 W RMS x 1
• @ 3 Ω 500 W RMS x 1
• @ 2 Ω 600 W RMS x 1
• @ 1.5 Ω N/A

Rated Continuous (RMS) Power @ 12.5 V

• @ 4 Ω 300 W RMS x 1
• @ 3 Ω 400 W RMS x 1
• @ 2 Ω 500 W RMS x 1
• @ 1.5 Ω N/A

General Specifications

• Frequency Response 7 Hz - 500 Hz (+0, -1dB)
• S/N Ratio, referred to highest rated power >87 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• S/N Ratio, referred to 1 W >67 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• Damping Factor @ 4 Ω >1000 / 50 Hz
• Damping Factor @ 2 Ω >500 / 50 Hz
• THD+N @ Rated Power <1% @ 2 Ω per Ch.
• Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)
• Min Copper Power / Ground Wire Gauge 4 AWG wire
• Fuse Rating 50 A (AFS, AGU or MaxiFuse™)

Signal Processing

• Filter Modes Low-Pass only
• Filter Slope (dB/Octave) 12 dB or 24 dB
• Filter Frequency Range 50-500 Hz
• Detented, Calibrated Filter Freq. Potentiometer Yes
• Filter Defeatable" Yes
• Infrasonic Filter 30 Hz, defeatable
• Bass Boost EQ No
• Output Polarity Switch No
• Remote Subwoofer Level Control Optional (HD-RLC)
• Remote Bass EQ Boost Control No
• Pass-Through Preamp Output Buffered

Physical Specifications

• Height (H) 2.05 in / 52 mm
• Width (W) 8.52 in / 216 mm
• Depth (D) 7.09 in / 180 mm
• Net Weight 6.3 lb / 2.86 kg

NexD™ Switching Technology

Summary:
NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact 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 less complex, more compact 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