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Rockford Fosgate T400X4ad

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RRP: $799.00
Our Price: $789.00

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Power 400 Watt Class-ad 4-Channel Amplifier


The Power T400X4ad is an ultra-compact, high efficiency 400 Watt 4-channel amplifier. Features multi-impedance Constant Power, input/output clip detection, top mounted controls and dual fan forced induction cooling. Perfect for hybrid, electric, small cars, trucks, motorcycles, and side-by-side UTVs.

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

The Power T400X4ad 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.

Number of Channels: 4
Rated Power
(RMS Continuous Power): 100 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
Total Power
(Sum of Rated Power): 400 Watts
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
Efficiency (average): >75%
Total Harmonic Distortion (THD+Noise): 4-Ohm: <1.0%
2-Ohm: <1.0%
Crossover Controls: High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
All-Pass: Yes
Tone Controls: Treble: 0 to +14 dB @ 12.5 kHz
Bass: 0 to +18 dB @ 45 Hz
Input Sensitivity: 150 mV to 12 V
Signal Input: Front High/Low Level Input: 4-Pin harness
Rear High/Low Level Input: 4-Pin harness
Signal Output: -
Power Input Connector: Detachable Compression Terminal
Power Wire Gauge: 8 AWG
Speaker Output Connector: Front: 4-Pin Harness
Rear: 4-Pin Harness
Speaker Wire Gauge: 16 AWG
Heat Sink Type: Extruded Aluminum
Cooling: Dual Fan Cooled
Remote Controls: Optional PLC2 provides Punch Level Control
Visual Indicators: Power: Blue LED
Protect: Red LED
Input Clip: Red LED3
Output Clip: Blue/Violet/Red LED1,2,3

LED Color Legend:
1BLUE: <0.5% THD
2VIOLET: 1% THD
3RED: 10%+ THD
Circuit Topology Class: Class-A/D
Operating Voltage: 9 - 16 VDC
Recommended Fuse
(not included): 60 A
Max. Current Draw (13.8V Sinewave): 55 A
Average Current Draw (13.8V Music): 28 A
Suggested Alternator: 75 A
Shipping Weight: 3.4 Lbs. (1.54 Kg.)
Dimensions (H x W x D): 1.6 x 4.3 x 8.3 (in.)
4.1 x 10.8 x 21.1 (cm)

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