![]() This pushes the amplifier's bandwidth to at least 500 Hz with minimal distortion and improves efficiency, while keeping typically bulky circuity more compact. 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. ![]() The cure for this is feedback (a corrective signal sent back to the input side), but this becomes impractical as the audio frequency increases, making it a good solution for band-limited (subwoofer) amps, but not for full-range amplifiers. Power supply sag with signal causes distortion at all power levels with these designs, even well below clipping. This basic approach assumes some ideal conditions, like a rock-steady power supply, that do not necessarily occur in a real, in-car installation. 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. Our NexD™ switching technology stems from our Class D expertise to deliver outstanding fidelity and efficiency, leading to compact amplifiers that deliver high power and exceptional value. NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs.īeginning with the original 'Slash' subwoofer amplifiers, JL Audio has been at the forefront of Class D amplifier design. This amplifier features a black powder-coat finish and a gasketed, brushed aluminum cover for the controls. The XD1000/5v2 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. 1 & 2 high-pass filter allows its cutoff frequency to be adjusted from 50-500 Hz or 500-5000 Hz. This amplifier's filters can also be configured as a true 3-way crossover, with a low-pass filter for the subwoofer channel, a bandpass filter on Ch. ![]() All three filters offer continuously variable cutoff frequency selection from 50-500 Hz. ![]() The XD1000/5v2 includes a 12 dB / octave high-pass filter for one main channel pair, a 12 dB octave high-pass or bandpass filter for the other main channel pair, plus a variable slope low-pass filter for its subwoofer channel. ![]() The breakthrough that makes this much power possible in such a small chassis is our NexD™ switching amplifier design. With this potent amplifier, you can drive two pairs of quality component speaker systems with plenty of clean power (75 W x 4 4 Ω), while also delivering a stout 600 W of power to a subwoofer system. The XD1000/5v2 delivers up to 1000 W of clean power and is ideal for an audiophile-grade, subwoofer + four satellite system. 5-Channel Class D System Amplifier, 100 W x 4 2 Ω + 600 W x 1 2 Ω - 14.4V ![]()
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