Rockford Fosgate Power T400X4ad
Compact 4-channel car amplifier — 100 watts RMS x 4
Item #: 575T400X4A
Your price: $499.99 Earn up to 500 Rewards points
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Item #: 575T400X4A
Your price: $499.99 Earn up to 500 Rewards points
Rockford Fosgate's Power Series T400X4ad 4-channel amplifier can send up to 100 watts RMS to four separate speakers, or you could use this tiny powerpack to run a couple of subs with 200 watts each. A dual-fan forced air cooling system keeps this sturdy little amp from overheating, so it can play hard for a long time.
Rockford Fosgate uses their proprietary Class AD amplifier technology, combining the high fidelity of a Class A system with the high efficiency of their special Class D technology, to bring you this ultra-efficient, high-output amplifier. In other words, this compact amp produces more power with less current draw from your vehicle's charging system than most other amps on the road today.
Power Series amplifiers actively monitor speaker performance using Rockford Fosgate's Constant Power technology. A speaker's impedance naturally fluctuates as it performs, fighting against your amp's output. So, just like your cruise control increases the engine's RPM to maintain your car's speed uphill, Constant Power maintains this amp's output by increasing its internal voltage and current flow when the speaker's impedance rises. This results in up to a 25% increase in the amp's total power output.
T400X4ab control panel with clip lights
Rockford Fosgate's C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) setup system ensures your music will sound as clean and powerful as possible. It works like this: play the setup tone on the included test CD, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It's that simple — your amplifier will be perfectly set to match your receiver's output. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Power amp. At quiet listening levels, you'll hear less background noise and more of your music.
If that blue light turns solid red while you're playing music, the amp's telling you that your source is distorting and you should turn it down, or risk damage to your gear. The optional PLC2 remote level control also doubles as a clip indicator, so you can see from the front seat if your music's clipping.
T400X4ad input connections (harnesses included)
You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.
Excellent, runs cool as a cucumber and please do not compare this to the PBR amp, it's like comparing apples to oranges.
Pros: Crisp Undistorted sound Runs cool with built in fans
Cons: No cons
Amazing product and fit on my 2013 Flhtk Harley Davidson. Currently pushing 4 speakers upper and lowers and producing rich full sounds at every speed. Can not recommend this product enough. Crutchfield once again delievers on time for the best price around ......the only place I shop. Thanks again for helping make all my rides rock.
Pros: Powereful unit 4 cannels Own cooling system Small foot print Very adjustable
Great little amp! It's $$$ but you get what you paid for! I try the Focal FD, but it just don't cut it for me!
Pros: Super small for that kind of power. Fan cool.
Cons: Little bit pricey! Would be great if it have build in processors!
Beautiful service for this wonderful product. Thanks
|RMS Power Output (Watts x Channels)||
100 x 4
|Peak Power Output (Watts x Channels)||290 x 2|
|Power at 2 Ohms (Watts x Channels)||100 x 4|
|Bridged Power (Watts x Channels)||200 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20000 Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||90 dB|
|Low-Pass Crossover Frequency||50-250 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||50-250 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost||0-18 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||4 RCA|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
Overview: The Rockford Fosgate Power T400X4ad is an ultra-compact four-channel amplifier. Even though the amplifier is only 8-5/8" x 4-1/4", it puts out a full 100 watts per channel at 4 ohms or 2 ohms. In bridged mono, the output is 400 watts at 4 ohms.
Class AD: The amplifier features Rockford Fosgate's proprietary Class AD technology, which allows the amp to produce more power with less current draw. It takes the highly efficient bd amplifier design to a full-range application. Class AD uses Dynamic Frequency Switching to increase the switching frequency during lower output levels for better signal resolution. In addition, Post Choke Feedback Filtering removes unwanted distortion by comparing the input signal to the output signal at the speaker connector.
Constant Power: Rockford Fosgate uses a patented circuit design to gain up to 25% more output power. Constant Power actively increases the voltage and current in direct relationship to the rise and fall of music signals to provide additional power.
Fan Cooled: The T400X4ad features dual fans to keep the amp running cool. Dual Fan Forced Induction pulls in fresh air, which pulls heat off of the MOSFETs, and directs airflow into the exhaust channel and out of the amplifier. Since the top and bottom heat sinks are decoupled, the top remains cool to the touch. When installing, you should leave at least 2-3" of clearance around the ends of the amplifier to optimize air flow to the fan intake and exhaust vents.
C.L.E.A.N. Technology: Using Rockford's C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) technology, you can easily and precisely set up the amplifier levels to eliminate distortion from damaging your speakers. Simple LED indicators are used, instead of test equipment, to identify signal clipping at both the input and output, and to match the audio source to the amplifier.
Top Mounted Controls: The T400X4ad features easy-to-reach controls on the top panel of the amplifier. There are two sets of controls: one for the front channels and another for the rear channels. The controls include:
LED Indicators: The amplifier has three LED indicators on its top panel:
Left Side of Amplifier:
Note: For high-level input, you can either splice RCA plugs onto the source unit's speaker wires, or cut the RCAs off of the supplied input harnesses and splice on speaker wires from the source unit using the standard wire color code (front left=white, front right=gray, rear left=green, rear right=purple).
Right Side of Amplifier:
Note: For 2-channel bridged mono operation, the front left + and right - wires and rear left + and right - wires should be used to connect to the speakers (4Ω minimum).
Warranty Terms: Rockford Fosgate Power-series amplifiers carry a two year warranty, when purchased from an Authorized Rockford Fosgate Dealer.
Extended Warranty Offer: Rockford Fosgate offers a one-year extended warranty (for a total of 3 years) when the amplifier is installed using a matching Rockford Fosgate installation kit, such as the RFK8 or RFK8i.
I put this amp in a 2014 street glide special. The amp is great and very easy to setup. I am running Hybrid Audio Texhnologies 6.5's in the faring and Hybrid Audio Texhnologies 5x4's in the bad lids. Sound us loud and super clear. I had to do a little water proofing of the amp though due to the new vent being directly over the amp. [ Robert Jun 01, 2014 ]