T400-4

The Rockford Fosgate T400-4 from the high-end Power Series is a powerful 4-channel amplifier featuring Class A/B technology, designed for precise, dynamic, and powerful music reproduction. With a total output of 400 watts RMS, this amplifier is ideal for driving high-quality speaker systems as well as combinations of speakers and subwoofers.

The built-in, independently adjustable high-pass and low-pass filters allow for flexible adaptation to different speaker configurations. Thanks to the variable Punch EQ tone control, the bass and treble ranges can be specifically boosted. High-quality MOSFET circuits, balanced RCA inputs, and the NOMAD protection circuit ensure reliable signal processing and safe operation.

The solid aluminum housing ensures effective heat dissipation, while the bridgeable output channels offer additional options for configuring custom car audio systems.

Technical Specifications

General Characteristics

• Manufacturer: Rockford Fosgate

• Model: T400-4

• Series: Power

• Amplifier Type: 4-channel amplifier

• Amplifier Class: Class A/B

• Total power: 400 watts RMS

• Number of channels: 4

• Bridgeable: Yes

• Power Supply: MOSFET

• Output stage: MOSFET

• Operating voltage: 9–16 V DC

• CEA-2006-compliant performance specifications
  
  

RMS output power at 14.4 V

• 4 ohms: 4 × 60 watts RMS

• 2 ohms: 4 × 100 watts RMS

• 4 ohms bridged: 2 × 200 watts RMS

• 2 ohms bridged: stable, according to the manufacturer
  
  

Audio Characteristics

• Frequency response: 20 Hz – 20,000 Hz (±1 dB)

• Signal-to-noise ratio at 1 watt into 4 ohms: ≥85 dB

• Signal-to-noise ratio at rated power into 4 ohms: ≥105 dB

• Total Harmonic Distortion plus Noise (THD+N) at 4 ohms: less than 0.05%

• Total Harmonic Distortion plus Noise (THD+N) at 2 ohms: less than 0.1%

• Damping factor: over 200

• Input sensitivity: 150 mV – 5 V

• Input impedance: 20 kOhm

• Balanced signal inputs: Yes

• Common-Mode Rejection Ratio (CMRR): over 55 dB at 1 kHz
  
  

Crossover Networks and Tone Control

• Integrated Active Crossovers

• High-pass filter (HPF): 50–500 Hz

• Low-pass filter (LPF): 50–500 Hz

• Filter slope: 24 dB/octave

• Filter characteristic: Butterworth

• Separate filter settings for front and rear channels

• Punch EQ Bass Boost: 0 to +18 dB at 45 Hz

• Punch EQ High-Frequency Boost: 0 to +12 dB at 12 kHz

• Optional external Punch EQ remote control can be connected
  
  

Connections and Features

• 2 pairs of RCA inputs (front/rear)

• Switchable 2- or 4-channel signal input

• Electrical connections for cables up to 4 AWG (approx. 21 mm²)

• Speaker terminals with screw terminals

• Speaker cable terminals: 8–18 AWG

• High-quality speaker connectors

• Solid aluminum heat sink

• Passive Convection Cooling

• Operating and Protection Status Indicators

• NOMAD protection circuit against overload and short circuits

• Thermal Overheating Protection

• Recommended external fuse: 100 A (not included)
  
  

Dimensions

• Width: 207 mm

• Height: 54 mm

• Length: 347 mm
  
  

What's Included

• 1 × Rockford Fosgate T400-4 4-Channel Amplifier

• 1 × User and Installation Manual

• Installation hardware