![]() ![]() -test tones also available as MP3 download from Amazon On Demand, Rhapsody, Google Play, and Spotify, labeled "3sixty.3 setup disc" (Punch amps and the 3sixty.-switchable subsonic filter (28 Hz, 12 dB/octave) on subwoofer channel.-variable PEQ2 bass/treble boost (0-18 dB at 45 Hz and 0-14 dB at 12.5K Hz).-variable high- and low-pass filters (50-250 Hz, 12 dB/octave).-250 watts RMS x 2 bridged at 4 ohms + 500 watts RMS at 1 ohm.-125 watts RMS x 4 + 300 watts RMS x 1 at 2 ohms.-75 watts RMS x 4 + 150 watts RMS x 1 at 4 ohms. ![]() Their proprietary MEHSA cooling process maximizes the heat transfer from the MOSFET devices to the heatsink, allowing the heat to escape more readily, so the transistors stay cooler and work better. Rockford Fosgate's Dynamic Thermal Management system uses forced air to dissipate heat evenly across the amp and out through the high-mass heatsink, efficiently drawing heat away from vital internal parts. This amplifier is extremely efficient because of its Class-D technology which reduces demand on the vehicles electrical system. Eliminating heat raises efficiency and lowers distortion The amp's built-in computer keeps tabs on the output current, ensuring that plunging speaker impedances (they change during play) or even a short circuit won't hurt anything. 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. 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. Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. At quiet listening levels, you'll hear less background noise and more of your music. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Punch amp. It's that simple - your amplifier is now set to match your receiver's output. 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. The PM400X2 is a 400 Watt 2-channel amplifier with high dynamic power using Class-A/B technology and a conformal coated pc board designed for motorsport and marine applications. The best 5 channel Rockford Fosgate amplifier is the Punch P1000X5 it features Class A/B and Class BD, underrated power, and a loud amp built to last. technology (Calibrated Level Eliminates Audible Noise) - a setup system that ensures your music will sound as clean and powerful as possible. Once again, Rockford Fosgate steps away from the crowd with their C.L.E.A.N.
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