Rockford Fosgate Power 400 Watt 4-Channel Amplifier - T400-4
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Literature

The Power T400-4 is a 4-channel amplifier capable of producing 100 Watts into each of its four channels at 2-Ohms. The T400-4 can run a 4-way full-range system or use component speakers on the front with subwoofers on the rear.

Overview

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Thanks to the Dynamic Thermal Management, the small chassis design insures it can be installed in any location – like under front seats.

  • 24dB/octave crossover
  • 2/4 channel input switch
  • MOSFET power supply
  • MOSFET output stage
  • 4 Gauge power/ground connectors
  • Audiophile grade speaker connections
  • 2-Year Warranty

Technologies

DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered this fanatic product. This statement illustrates our commitment to being Designed and Engineered in the U.S.A.

NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

MEHSA3

MEHSA3 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

TO-247 MOSFETs

(left-OLD | right-NEW) Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in competitor amps.

TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality.

Specifications
Speaker Output ConnectorScrew terminal barrier strip
Power Wire Gauge8 AWG to 4 AWG
Power Input ConnectorBlock
Speaker Wire Gauge8 AWG to 18 AWG
Visual IndicatorsPower
Thermal
Protect
Remote ControlsOptional Remote Punch EQ
(overrides rear channel built-in Punch EQ)
Crossover ControlsFront High-Pass (HP): 50-500Hz 24dB/octave Butterworth
Front Low-Pass (LP): 50-500Hz 24dB/octave Butterworth
Rear High-Pass (HP): 50-500Hz 24dB/octave Butterworth
Rear Low-Pass (LP): 50-500Hz 24dB/octave Butterworth
Signal Outputn/a
Tone ControlsFront Channels - Punch EQ
Treble: 0dB to +12dB @ 12kHz
Bass: 0dB to +18dB @ 45Hz
Rear Channels - Punch EQ
Treble: 0dB to +12dB @ 12kHz
Bass: 0dB to +18dB @ 45Hz
Efficiency (average)69% @ 4-Ohm
68% @ 2-Ohm
Total Harmonic Distortion (THD+Noise)4-Ohm: <1.0%
2-Ohm: <1.0%
Signal InputFront Low level: 1 RCA pair
Rear Low level: 1 RCA pair
Input Switch: 2CH / 4CH
Circuit Topology ClassClass A/B
Input Sensitivity150 mV to 4 V
Frequency Response20Hz to 20kHz +/- 1dB
BridgeableYes
Dynamic Power (PVC/PowerCube®)  84 Watts x 4 @ 4-Ohm 0° Res
139 Watts x 4 @ 2-Ohm 0° Res
272 Watts x 2 @ 4-Ohm Bridged
Rated Power (RMS Continuous Power)60 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
2-Ohm x 2 Bridged Stable
Total Power (Sum of Rated Power)400 Watts RMS
Number of Channels4
CoolingConvection
Operating Voltage9 - 16 VDC
Recommended Fuse (not included)60 A
Average Current Draw (13.8V Music)30 A
Max. Current Draw (13.8V Sinewave)60 A
Suggested Alternator75 A
Dimensions (H x W x D)2.14 x 8.14 x 13.66 (in)
5.42 x 20.68 x 34.69 (cm)
Shipping Weight11.90 Lbs. (5.39 Kg.)

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