Description
Rockford Fosgate Power T400X4ad
The T400X4AD is a 400‑watt, 4‑channel ultra‑compact Class‑AD amplifier by Rockford Fosgate. Designed for both performance and flexibility, it delivers constant power output whether using 4‑ohm or 2‑ohm speaker loads. Built with top‑mounted controls, crossover filters, high/low level inputs, and a robust thermal protection system (dual fans, heat sinks), it fits well in tight car installations without compromising output or quality.
Features
| Feature | Specification |
|---|---|
| Channels / Power | 4-channel output with constant power at 4 Ω or 2 Ω |
| Amplifier Design | Class-AD – combines fidelity of Class A/B with efficiency of Class D |
| Thermal Management | Dual cooling fans, extruded heat sinks, real-time thermal sensing |
| Controls | Top-mounted: HP/LP crossover, input sensitivity, channel input switch, etc. |
| Inputs / Features | High- and low-level inputs with auto turn-on; bridged capability @ 4 Ω; C.L.E.A.N. clip detection LEDs |
Specification
| Specification | Detail |
|---|---|
| Model | Rockford Fosgate T400X4AD |
| Class | Class‑AD |
| Channels | 4 |
| Power Output (RMS) | 100 W x 4 @ 4 Ω 100 W x 4 @ 2 Ω 200 W x 2 @ 4 Ω (bridged) |
| Frequency Response | 20 Hz ‑ 20 kHz ±1 dB |
| Crossover Filters | HP/LP‑filter, 50‑250 Hz, 12 dB/octave |
| Input Sensitivity | ~150 mV to 12 V (high/low level) |
| Efficiency (avg) | > 75% |
| THD + Noise | < 1.0% (at both 4 Ω and 2 Ω) |
| Operating Voltage | 9 ‑ 16 V DC |
| Power/Ground Wire Gauge | 8 AWG |
| Fuse (recommended) | 60 A |
| Dimensions (H × W × D) | Approx 1.6 × 4.3 × 8.3 in (≈ 4.1 × 10.8 × 21.1 cm) |
| Warranty | 1‑2 years depending on region/retailer |
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