The TM400X4ad is a 400 Watt 4-channel amplifier with high efficiency Class-ad technology and a conformal coated pc board designed for motorsport and marine applications.

The Power TM400X4ad 400 Watt 4-channel ultra-compact, amplifier is built on Rockford Fosgate’s proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm impedances. Flexible vehicle integration enabled through low-level and high-level inputs with auto turn-on. Top mounted controls allow easy access to built-in crossover and C.L.E.A.N. input/output clip detection circuits. The 3-stage thermal lock extrusion with dual fan forced induction keeps everything cool while real-time thermal/protection schemes safeguard the amplifier.

• Rockford Fosgate proprietary Class AD technology
• 4/2 Ohm muti-impedance Constant Power
• Differential inputs with high level auto turn-on feature
• 8 AWG power/ground connector w/ upgraded RCA connectors
• Remote-Out feature when using high level inputs
• 2/4 channel input switch
• 4 Ohm bridged capable
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Top mounted controls
• Dual fan cooled
• Real time thermal sensing
• Dual extruded heat sinks
• Discrete surface mount technology
• Marine grade two part epoxy coating on circuit boards
• 2-Year Warranty

CEA-2006 Compliant

CEA-2006 Power Rating
100W x 4 @ 4Ω
≤1.0% THD+N

Number of Channels

4

Total Power
(Sum of Rated Power)

400 Watts

Rated Power
(RMS Continuous Power)

100 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged

Dynamic Power
(PVC/PowerCube®)

128 Watts x 4 @ 4-Ohm
152 Watts x 4 @ 2-Ohm
290 Watts x 2 @ 4-Ohm Bridged

Bridgeable

Yes
Front Terminals: Left (+) Right (-)
Rear Terminals: Left (+) Right (-)

Frequency Response

20Hz-20kHz +/-1dB

Input Sensitivity

150 mV to 12 V

Circuit Topology Class

Class AD

Efficiency (average)

>75%

Total Harmonic Distortion (THD+Noise)

4-Ohm: <1.0%
2-Ohm: <1.0%

Signal Input

Front High/Low Level Input: 4-Pin harness
Rear High/Low Level Input: 4-Pin harness

Signal Output

—

Tone Controls

Treble: 0 to +14 dB @ 12.5 kHz
Bass: 0 to +18 dB @ 45 Hz

Crossover Controls

High-Pass:
50Hz-250Hz @ 12dB/Octave Butterworth
Low-Pass:
50Hz-250Hz @ 12dB/Octave Butterworth
All-Pass: Yes