TM400X4ad

The Rockford Fosgate TM400X4ad is a powerful and exceptionally compact 4-channel amplifier from the Power Series, designed specifically for use in motorcycles, marine applications, and high-end car audio installations. Thanks to innovative Class ad technology, the amplifier delivers a total output of 400 watts RMS with high efficiency and a minimal footprint.

The integrated Constant Power technology ensures that the same output power is available at both 4 ohms and 2 ohms. This allows the amplifier to be flexibly combined with different speaker systems. In addition, bridge mode enables an output power of up to 2 x 200 watts RMS at 4 ohms.

To ensure reliable playback, the TM400X4ad features Rockford Fosgate C.L.E.A.N. technology for detecting signal clipping, individually adjustable high- and low-pass filters, and a built-in Punch tone control. The automatic power-on function via high-level inputs simplifies integration into existing audio systems.

A durable protective coating on the circuit boards, two cooling fans, and a multi-stage cooling system ensure reliable operation even under demanding operating conditions.

Technical Specifications

General Characteristics

• Manufacturer: Rockford Fosgate

• Model: TM400X4ad

• Series: Power Marine

• Amplifier Type: 4-channel amplifier

• Amplifier class: Class-ad

• Total power: 400 watts RMS

• Technology: Constant Power

• Number of channels: 4

• Supported speaker impedance: 2 and 4 ohms

• Bridge Mode: 4 ohms

• Operating voltage: 9–16 V DC
  
  

RMS Output Power

• 4-ohm stereo: 4 x 100 watts RMS

• 2-ohm stereo: 4 x 100 watts RMS

• 4 ohms bridged: 2 x 200 watts RMS
  
  

Audio and Sound Settings

• Frequency response: 20–20,000 Hz

• High-pass filter (HPF): 50–250 Hz, variable

• Low-pass filter (LPF): 50–250 Hz, variable

• Filter slope: 12 dB/octave

• Punch Bass EQ: 0 to +18 dB at 45 Hz

• Punch Treble EQ: 0 to +14 dB at 12.5 kHz

• Input sensitivity: 150 mV to 12 V

• Input impedance: 20 kOhm

• Total Harmonic Distortion plus Noise (THD+N) at rated power: less than 1.0%

• Signal-to-noise ratio according to CEA-2006: over 90 dB

• Signal-to-noise ratio at rated power: over 110 dB

• Channel separation: over 60 dB

• Common-mode rejection: over 60 dB
  
  

Connections and Features

• RCA Inputs (Low-Level)

• High-Level Inputs for Speaker Signals

• Automatic activation via a high-level signal

• Remote-Out Function When Using the High-Level Inputs

• Switchable 2-/4-channel input configuration

• C.L.E.A.N. technology for input and output clipping detection

• Controls on the top of the housing

• Connector for optional PLC2 bass remote control with clipping indicator

• Power and ground connections: 8 AWG (approx. 8.4 mm²)

• Recommended external fuse rating: 60 A
  
  

Cooling and Protective Functions

• Dual Active Fan Cooling

• Multi-stage cooling system with aluminum heat sinks

• Real-Time Temperature Monitoring

• Integrated Thermal Protection Circuits

• Electronic Protection Monitoring

• Two-component epoxy coating on the circuit boards for increased resistance to moisture

• Surface-Mounted Electronic Components (SMD Technology)
  
  

Dimensions

• Length: 211 mm

• Width: 108 mm

• Height: 41 mm
  
  

What's Included

• 1 Rockford Fosgate TM400X4ad 4-Channel Amplifier

• Power Supply Connector

• Performance Certificate (Individual Performance Measurement Report)

• User and Installation Manual