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JD amplifiers apply our core amplifier technologies and a generous feature set to deliver fantastic value. The amplifier section is 100% JL Audio, with our exclusive NexD™ switching technology for superior fidelity and efficiency. The latter reduces heat output, making the compact dimensions of the JD amplifiers possible.
Features include automatic turn-on capabilities (via signal sensing and DC-offset sensing) and dual-range differential-balanced inputs to combat noise and maximize compatibility with a wide range of signal types. Easy-to-use LED clipping indicator rings surrounding the input sensitivity controls streamline the input level setting process. All models include 12 dB/octave filters that are fully adjustable from 50-500 Hz. Monoblock models also include a bass boost EQ and a port for an optional RBC-1 controller to adjust the subwoofer level from the driver’s seat.
Let’s power up your system!
Play a sine-wave test tone through the audio system.
Set the source unit at 3/4 of full volume.
Increase the “Input Sensitivity” control until the LED is solidly lit, indicating maximum, unclipped output.
That’s it! The input sensitivities are now accurately set.
Instead of relying on antiquated, inefficient amplifier designs, JL Audio JD amplifiers employ our exclusive NexD™ switching technology to achieve total amplifier efficiencies exceeding 80%. This means they run much cooler and put less strain on your electrical system than a conventional amplifier. It also allows for very impressive power output from a very compact amplifier, which greatly simplifies installation in tight spaces.