- Get a free one-year extended warranty on this select Rockford Fosgate Amplifier when purchased as an Amplifier Installation Kit bundle.
- Constant Power technology maintains full output power despite impedance changes
- C.L.E.A.N. gain setup system includes clip lights and link to Rockford Fosgate's setup tones
- variable Punch EQ (bass/treble boost: 0-18 dB at 45 Hz, 0-14 dB at 12,500 Hz)
- 8-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware included in this listing
Rockford Fosgate 4 Channel 400 Watt Class AD AmplifierT400X4ad
Get a free one-year extended warranty on this select Rockford Fosgate Amplifier when purchased as an Amplifier Installation Kit bundle.
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.
This Listing Includes:
(1) Rockford Fosgate RFK8 Amp install kit
- 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
Number of Channels: 4
Total Power: 400 Watts
Frequency Response: 20Hz-20kHz +/-1dB
Input Sensitivity: 150 mV to 12 V
Circuit Topology Class: Class AD
Efficiency (average): More than 75%
Power Wire Gauge: 8 AWG
Power Input Connector: Detachable Compression Terminal
Speaker Wire Gauge: 16 AWG
Cooling: Dual Fan Cooled
Operating Voltage: 9 - 16 VDC
Recommended Fuse(not included): 60 A
Average Current Draw (13.8V Music): 28 A
Max. Current Draw (13.8V Sinewave): 55 A
Suggested Alternator: 75 A
100 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
128 Watts x 4 @ 4-Ohm
152 Watts x 4 @ 2-Ohm
290 Watts x 2 @ 4-Ohm Bridged
Front Terminals: Left (+) Right (-)
Rear Terminals: Left (+) Right (-)
Total Harmonic Distortion (THD+Noise):
4-Ohm: less than 1.0%
2-Ohm: less than 1.0%
Front High/Low Level Input: 4-Pin harness
Rear High/Low Level Input: 4-Pin harness
Treble: 0 to +14 dB @ 12.5 kHz
Bass: 0 to +18 dB @ 45 Hz
High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
Power: Blue LED
Protect: Red LED
Input Clip: Red LED3
Output Clip: Blue/Violet/Red LED1,2,3
LED Color Legend:
1BLUE: Less Than 0.5% THD
2VIOLET: 1% THD
3RED: 10%+ THD
Speaker Output Connector:
Front: 4-Pin Harness
Rear: 4-Pin Harness
1.6 x 4.3 x 8.3 (in.)
4.1 x 10.8 x 21.1 (cm)
3.4 Lbs. (1.54 Kg.)
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