Features

PDX Amplifier Design: Class-D amplifiers boast higher efficiency, produce much less heat, and draw less current than traditional Class-AB amps. The PDX series is Alpine's totally new super-efficient power density design of full range class-D amps. They combine MOSFET power supplies, MOSFET final outputs, and a thermal management processor, along with a 4-Layer Glass Epoxy PC Board to create a high-end sound quality without the bulky heat sinks required by most amps with this much power.

STAR Topology: Alpine's unique STAR (Signal Transit for Accurate Response) Circuit PCB design provides a single common ground for all amp sub-blocks, preventing ground interference and minimizing internal noise.

2 and 4-ohm Stable: The PDX mono amplifier can be used with virtually any subwoofers because the PDX amplifier produces the same amount of power into both 2-ohm and 4-ohm, so you will get the most from your subwoofers in almost any application.

Speaker Control: The PDX mono amplifier's groundbreaking damping factor precisely controls the linear movement of your subwoofer giving your system less distortion and more clarity that exceeds other amplifiers.

Low Pass Filter: The amplifier features a built-in Low Pass Filter with a rotary, variable adjustment knob which permits adjustment of the crossover frequency, by rotating the knob to select any frequency between 50 to 200 Hz as the crossover point.

Terminal Layout: For wiring convenience all the inputs and outputs on the amp are on one side.

Verification Certificate: The amplifier comes with a certificate that lists the RMS power output of the individual amplifier. It also lists the model number, serial number, test date, and the test conditions (14.4 volts, 4 ohms).

CEA-2006 Compliant: CEA-2006 is a new system of testing & measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4-ohm load, with 1% or less Total Harmonic Distortion (THD) plus noise, and at a frequency range of 20 Hz to 200 Hz when applicable. Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. The Alpine PDX-1.600 under CEA-2006 regulations is rated at 600 Watts RMS x 1 channel at 2ohm or 4ohm with a 80dBA signal to noise ratio.

Speaker Connecters: The PDX series amps use a new Speaker Quick Connect plug to attach the speaker wires to the amp. Bare speaker wire, up to 8 gauge, is held in place by a set screw, the Quick Connect plug then plugs into the amp. Like an RCA jack, the Quick Connect plug uses a center positive layout, so it fits two ways and both maintain correct polarity.

Line Level Output: In addition to the line inputs, the PDX-1.600 has non-fading left and right female RCA outputs for extra system flexibility.

Stack Amps: Because the PDX series design generates so little heat, up to three amps can be stacked and bolted together. All three amps in the series, PDX-2.150, PDX-4.150, and PDX-1.1000 share the same footprint, so they can be stacked together.

LED: The top mounted LED Power/Status indicator glows blue when operating normally and red when one of the protection circuits engages.

Protection Circuits: This amplifier includes protection circuits to prevent damage due to the following conditions:

Controls

Controls (front of unit): The controls are hidden and protected by a removable metal door. The door is removed by unscrewing one hex-head screw with the supplied allen-wrench. The door is to be secured back into place once the controls are set.

• Crossover Frequency: rotary control to select the low pass crossover frequency, variable from 50 to 200Hz, 24 dB/octave
• Gain Control: rotary control to set the amplifier's gain according the level of the incoming signal, continuously variable from 0.1V to 8.0V depending on the Gain Range setting
• Gain Range: select 0.1-1.0 volt or 1.0-8.0 volt range for the rotary control depending on the output RCA level of your head unit
• Subsonic Filter: off, 15 Hz, or 30 Hz

Connections

Inputs and Outputs (rear of unit): The amplifier comes supplied with two allen-wrenches to tighten the amp's terminals and secure your wiring.

• Power and Ground terminals: power and ground terminals are gold plated set screw terminals, will accept up to 4 gauge bare wire, Alpine recommends using a 4 gauge wire but a 6 gauge wire minimum can be used
• Remote Turn-on terminal: gold plated set screw terminal, will accept 12 gauge to 8 gauge bare wire
• Speaker terminals: the speaker output uses Alpine's Speaker Quick Connect plug
• Line Level Input: Left and right female RCA jacks, gold plated
• Line Level Output: Left and right female RCA jacks, gold plated