HiFonics X4-MAXXIMUS

The HiFonics X4-MAXXIMUS from the GENERATION X4 series is one of the most powerful amplifiers in the HiFonics lineup. This robust digital Class D power amplifier was developed specifically for demanding high-end car audio systems and high-power subwoofer systems.

With an output power of up to 2 x 3,000 watts RMS at 1 ohm or 1 x 6,000 watts RMS in bridged mode at 2 ohms, the X4-MAXXIMUS offers enormous power reserves for particularly power-intensive bass applications.

The elaborate design combines a heavy aluminum enclosure with a brushed finish, solid cast aluminum end caps, and generously sized transformers. High-quality aluminum controls, screw-terminated RCA connectors, and a HiFonics logo illuminated in either blue or white underscore the exclusive character of the GENERATION X4 series.

A wide range of adjustment options is available for precise tuning of the subwoofer. These include a variable low-pass filter, a subsonic filter, an adjustable bass boost with Q-Control, and continuous phase adjustment. The included bass level remote control allows you to conveniently adjust the bass level from the driver’s seat.

In addition, the amplifier features balanced signal inputs, high-quality, low-noise input amplifiers, and a connection option for controlling multiple compatible HiFonics amplifiers simultaneously.

Technical Specifications

General Characteristics

• Model: HiFonics X4-MAXXIMUS

• Series: GENERATION X4

• Amplifier Type: Digital 2-Channel Subwoofer Amplifier

• Circuit Technology: Class D

• Channel configuration: 2 x mono, bridgeable

• Regulated Power Supply: MOSFET

• Output transistors: MOSFET

• Damping factor: > 400

• Signal-to-noise ratio: > 98 dB

• Total Harmonic Distortion plus Noise (THD+N): 0.03%
  
  

RMS output power at 13.8 volts

• 2 x 1,200 watts RMS at 4 ohms

• 2 x 2,000 watts RMS at 2 ohms

• 2 x 3,000 watts RMS at 1 ohm
  
  

RMS Output Power in Bridge Mode

• 1 x 4,000 watts RMS at 4 ohms

• 1 x 6,000 watts RMS at 2 ohms
  
  

Crossover Networks and Sound Settings

• Low-pass filter (LPF): 40–250 Hz

• Low-pass slope: 24 dB/octave

• Subsonic filter: 10–50 Hz

• Subsonic slope: 24 dB/octave

• Bass Boost: 0–18 dB

• Bass Boost Frequency: 30–60 Hz

• Q-Control: Adjustable from wide to narrow

• Phase control: 0–180°

• Extended Bass Control: Available
  
  

Signal Inputs and Outputs

• RCA inputs: 2

• RCA outputs: 2

• Balanced Line Inputs: Available

• Balanced connection: Mini-DIN

• RCA Input Sensitivity: 0.2 – 9 V

• Balanced Input Sensitivity: 0.4 – 18 V

• RCA input impedance: 47 kOhm

• Balanced Input Impedance: 20 kOhm

• Connection for bass level remote control: Available

• Remote output for connecting additional compatible amplifiers: Available
  
  

Power Supply and Circuit Protection

• Operating voltage for RMS power ratings: 13.8 V

• Power Supply Technology: Regulated MOSFET Power Supply

• Recommended external fuse rating for 4-ohm operation: 200 A

• Recommended external fuse rating for 2-ohm operation: 300 A

• Recommended external protection for 1-ohm operation: 400 A
  
  

Case and Features

• Solid aluminum heat sink

• Brushed Hairline Finish

• Heavy aluminum cast end pieces

• Screw-Terminated RCA Jacks

• Enclosed Terminal Blocks

• Large XXL Transformers

• Low-Noise Input Operational Amplifiers

• Slew rate of the input amplifiers: 9 V/µs

• Aluminum Controls

• Illuminated HiFonics Logo: Blue or White
  
  

Dimensions

• Width: 266 mm

• Height: 64 mm

• Length without end caps: 850 mm

• Total length, including end caps: 880 mm
  
  

What's Included

• 1 HiFonics X4-MAXXIMUS 2-Channel Class D Amplifier

• 1 x Bass Level Remote Control

• 1 x connection cable for the bass level remote control

• 1 x User Manual