Alpine PDX-F4 amplifier

4/3/2 Channel Power Density Digital Amplifier



Introducing the all-new range of PDX series amplifiers, designed and engineered for ultimate sound quality, power, performance and reliability. These sleek and stylish amplifiers have been re-designed from the ground up to deliver an amplifier range that not only look amazing, they perform flawlessly.

Incorporating new technology to maximise sonic quality, the new PDX amplifiers deliver extremely low distortion levels, wide bandwidth and industry leading S/N ratios. The new PDX amplifiers have an exceptionally high damping factor, more than 500 for the 4-channel PDX-F4. What’s more, the all-new PDX amplifiers are 20% smaller than the first generation models and their unique stacking design allows for a large multi amplifier system to be installed virtually anywhere.

These new PDX amplifiers are for the true car audio enthusiast, providing exceptional sound quality and performance.


Connectors: Quick Disconnect Terminals (Power Terminal and Speaker Terminals)
Terminal Layout: One-Sided
Mounting Design: Easy Stacking and Clean-look installation

Amplifier Type: Class-D (Digital)
Channel Design: 4/3/2 Channel
Thermal Protection
Low-battery Protection
Power Supply Design: DC-DC PWM
Power Supply Board Circuitry: STAR Circuit
Current Protection: Auto Over-Current Protection
Power Indicator: Top Mounted Blue LED Power/Status Indicator
Crossover: Adjustable High Pass, Low Pass
Pre-Amp Stage: Discrete
Board Design: 6-Layer Glass Epoxy PC Board
Gain Control: Adjustable
Bass Control: Remote Bass Control (Sold Separately)


RMS Continuous Power (at 14.4 V)

Per Channel into 4 ohms: 100 W x 4
Per Channel into 2 ohms: 100 W x 4
Bridged into 4 ohms: 200 W x 2
THD + N (Reference: 10 W / rated power into 4 ohms): 0.003 % / 0.05 %
S/N Ratio (IHF A Weighted, Reference: rated power into 4 ohms): 118 dBA
S/N Ratio (IHF A Weighted, Reference: 1 W into 4 ohms): 98 dBA
Input Impendance: 10k ohms
Frequency Response (Reference: 1 W into 4 ohms): 5 Hz – 100 kHz / 0 dB ~ -3 dB

Crossover Frequency (Variable, L.P.F / H.P.F / OFF Selectable)
1/2 ch: 30 Hz – 400 Hz (-12 dB / oct)
3/4 ch: 30 Hz – 400 Hz (-12 dB / oct)
Input Sensitivity (V / at 10k ohms): 0.2 V – 4.0 V with Input Level

Width: 257.0 mm
Height: 50.8 mm
Depth: 192.0 mm
Weight: 2.87 kg


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