Amplifiers

Accurate Dynamic Sound Reproduction
Alpine’s goal is to deliver the best sound quality possible. With the PDX series, digital switch-mode amplification yields incredible sound quality. Advances in the PDX design include improved feedback circuitry to faithfully reproduce the input signal for improved dynamic range and higher fidelity. If you’re listening to your favorite rock song, your amp is ready to jump from loud to calm and back again with ease.

Speaker Control
Let your amps control your speakers. The PDX amplifiers’ groundbreaking damping factor means less distortion and clarity that exceeds other amplifiers.

By the Power Invested in PDX
We now pronounce you amplified. The PDX mono amplifiers can be used with virtually any subwoofer(s). PDX amps produce the same amount of power into both 2ohm and 4ohm so they will get the most from your subwoofers in almost any situation.

Less Load on your Alternator and Battery
Get the most out of your stereo system without a trailer load of batteries. The PDX revolutionary design provides higher efficiency at all volume levels.

Low Interference
Install these amps anywhere in your vehicle without interference. So you can store an amp or few under your seat, and won’t have to worry about interference coming from other electronics in your car environment. Their small footprint and unique stacking capability make them perfectly suited to the hash in-vehicle environment.

Make Use of your Space
Now you don’t have to sacrifice space in your car for big bulky amps. PDX amplifiers are built from an advanced Power Density design to provide more power per square inch. Stick to PDX to get the best sound quality without taking up too much room.

Stack ‘Em Up
The PDX amplifiers all share a universal chassis size – all models are the same size so you can vertically stack the set up you want. Their unique design makes them easy to stack, easy to install. Plus, the main controls are found behind the front panel of the amp, so the amp always looks neat and tidy and easy to access.

- Stackable Installation Design
- Thermal Management Processor
- Adjustable Crossover
- MOSFET Power Supply
- DC-DC PWM Power Supply
- Discrete Pre-Amp Stage
- MOSFET Final Outputs
- STAR Circuitry
- Auto Over-Current Protection
- Top Mounted Blue LED Power/Status Indicator
- Integrated Wire and Mounting Screw Terminals
- One Side Terminal Layout
- Gold Plated RCA Input Connectors
- Continuously Adjustable Gain Control
- Gold Plated Power Screw Terminals
- 4-Layer Glass Epoxy PC Board
- Speaker Quick Connect

PDX Digital Amplifiers

75 Watts x 4 @ 2 Ohms

75 Watts x 4 + 300 Watts x 1 @ 2 Ohms

- 75 watts RMS x 2 at 2 ohms
- 150 watts x 1 bridged at 4 ohms
- Built-in low-pass filter (80 Hz fixed, 12 dB/octave)
- Line level (RCA) and speaker level inputs

500 Watts x 1 @ 2 Ohms

•Excelon Reference Series Mono Amplifier
•600 Watts (RMS) x 1 @ 4ohms
•700 Watts (RMS) x 1 @ 2 Ohms
•Dual Power Supply
•Dual Sigma Drive
•Variable Low Pass Filter: 50~200Hz -24dB/oct
•Variable Infrasonic Filter: 15~40Hz -24db/oct
•Bass Boost Remote Ready (KCA-WR10)

•Excelon Reference Series 4 Channel Amp
•120 Watts (RMS) x 4 @ 4ohms
•150 Watts (RMS) x 4 @ 2 Ohms
•300 Watts (RMS) x 2 @ 4 Ohms (Bridged)
•Dual Power Supply
•Bi-Amp Connection
•Variable High Pass Filter (High-Range): 2.5~10 kHz -12dB/oct
•Variable High Pass Filter (Low-Range): 50~200Hz -12dB/oct
•Variable Low Pass Filter (High-Range): 2.5~10 kHz -12dB/oct
•Variable Low Pass Filter (Low-Range): 50~200Hz -12dB/oct

•Class D Mono Power Amplifier
•Dual Power Supply
•Digital Sigma Drive
•1 Ohm Load Capability
•Thermal Management
•Power MOS-FET Switching Power Supply
•Optional Bass Boost Wired Remote (KCA-WR10)
•Cast Aluminum Heat Sink Design
•Dual Cooling Fans
•Double-Sided Glass Epoxy Circuit Boards
•Hexagon Screw Type 4AWG Terminal Blocks - Power/Ground
•Hexagon Screw Type 8AWG Terminal Blocks – Speaker Output
•Single-Side Exposure Of Terminals For Multi-Installation
•Line Output Terminals For Extension
•2-Year Warranty

•Class AB 4-Ch Amplifier
•K-STAT Output Circuit
•Detachable Aluminum Dress Plate
•Power MOS-FET Switching Power Supply
•Cast Aluminum Heat Sink Design
•Dual Cooling Fans
•Hexagon Screw Type Terminal Blocks
•Single-Side Exposure Of Terminals For Multi-Installation
•Line Output Terminals For Extension
•2-Year Warranty

•500 watts RMS x 1 at 4 ohms (900 watts x 1 at 2 ohms)
•1-ohm stable (output regulated to 900 Watts)
•Variable low-pass filter (50-200 Hz at -24 dB per octave)
•Bass Boost Control (0-18 dB at 40 Hz)
•Infrasonic filter (15/25 Hz, 18 dB/octave)
•Class D design
•Speaker-level inputs with signal sensing turn-on
•Preamp-level inputs and outputs

•CEA Rated: 300W (1.0% THD+N) (4Ohm/1Ch)
•CEA Rated: 500W (1.0% THD+N) (2Ohm/1Ch)
•High Quality Speaker Level Input and Blue Illumination
•Variable low-pass filter (50-200 Hz at -24 dB per octave)
•Bass Boost Control 0-18 dB at 40 Hz)
•Infrasonic filter (15/25 Hz, 18 dB/octave)
•Speaker-level inputs with signal sensing turn-on
•Preamp-level inputs and outputs

•CEA Rated: 50W x 4 (1.0% THD+N) (4Ohm/4Ch)
•CEA Rated: 75W x 4 (1.0% THD+N) (2Ohm/4Ch)
•High Quality Speaker Level Input and Blue Illumination
•High-pass (12 dB per octave) and low-pass (24 dB per octave) filters variable from 50 to 200Hz
•Variable Bass Boost control (0-18 dB at 40 Hz)
•Cooling fan
•MOSFET power supply
•Speaker-level inputs with signal sensing turn-on

•300 Watt x 1
•Class D Mono Power Amplifier
•2 Ohm Load Capability
•Power MOS-FET Switching Power Supply
•Cast Aluminum Heat Sink
•Built-In Low-Pass Filter
•Speaker-Level Inputs For Easy Factory Integration With Factory Stereo
•CEA-2006 Compliant
•1-Year Warranty

•CEA Rated: 40W x 4 (1.0% THD+N) (4Ohm)
•60 Watts x 4 (2 Ohm)
•130 Watts x 2 (4 Ohm Bridged)
•MOSFET power supply
•Preamp and speaker-level inputs

Upgrade to Full Digital Performance

Introducing the new digital X-Power series of Class-D amplifiers. The X-Power amplifiers incorporate many of Alpine’s advanced digital technologies used in our top-of-the-line PDX Series. Don’t let their small size fool you, these amplifiers were specifically engineered to offer performance, sound quality and reliability at an affordable price.