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.
Features
- Differential inputs with high level auto turn-on feature
- Remote-Out feature when using high level inputs
- 4 Ohm bridged capable
- Dual fan cooled
- Real time thermal sensing
- Dual extruded heat sinks
- 2/4 channel input switch
- 4/2 Ohm muti-impedance Constant Power
- Discrete surface mount technology
- 8 AWG power/ground connector w/ upgraded RCA connectors
- C.L.E.A.N. input/output clip detection and indicator LEDs
- Top mounted controls
- 2-Year Warranty
- Rockford Fosgate proprietary Class AD technology
Specifications
| 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 |
| Remote Controls | — |
| Visual Indicators | Power: | Blue LED | Protect: | Red LED | Input Clip: | Red LED | 3 | Output Clip: | Blue/Violet/Red LED | 1,2,3 | LED Color Legend: | 1 | BLUE: <0.5% THD | 2 | VIOLET: 1% THD | 3 | RED: 10%+ THD |
| Power Wire Gauge | 8 AWG |
| Power Input Connector | Detachable Compression Terminal | Replacement | 1040-57997 |
| Speaker Wire Gauge | 16 AWG |
| Speaker Output Connector | Front: | 4-Pin Harness | Rear: | 4-Pin Harness |
| Cooling | Dual Fan Cooled |
| Heatsink | Extruded Aluminum |
| 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 |
| Dimensions (H x W x D) | 1.6 x 4.3 x 8.3 (in.) | 4.1 x 10.8 x 21.1 (cm) |
| Shipping Weight | 3.4 Lbs. (1.54 Kg.) |
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