Rockford Fosgate P400X4 Punch Series 4 Channel Amplifier

Big power for your speakers or subwoofers

Rockford Fosgate's Punch P400X4 amplifier can put out 50 watts RMS to each of your front and rear speakers, plenty of power for clean music even at high levels. You can use the amp's high-pass filter to remove low bass from your speakers so they'll play more efficiently. You can also switch this amp into 2-channel mode to drive a couple of subwoofers with up to 200 watts RMS each. The amp's low-pass filter comes in handy for getting the right sound from your sub/enclosure combo. The Punch EQ2 includes bass and treble boosts, in case you want to add some boom and sizzle back into the mix.

Easy to set for optimum performance

P300X2 control panel shown as example

Once again, Rockford Fosgate steps away from the crowd with their C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) — a setup system that ensures your music will sound as clean and powerful as possible. It works like this: first download the setup tones from Rockford Fosgate, then play the tone, 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.

Keeps an eye on things while playing

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 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.

Maintaining coolness raises efficiency and lowers distortion

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. 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.

                                                     P400X4 connection panel and input clip light

Product Features:

• High-level input capable with Auto Turn-On circuit
• Features C.L.E.A.N. Set-up
• 12dB/octave Butterworth crossover
• On-board Punch EQ with +18dB boost @ 45Hz.
• Muted turn on
• Stealth top-mounted control panel
• Cast aluminium heatsink
• Short-circuit protection
• Overcurrent protection

Specifications:

• Number of Channels:4
• Rated Power (RMS Continuous Power):
• 50 Watts x 4 @ 4-Ohm
• 100 Watts x 4 @ 2-Ohm
• 200 Watts x 2 @ 4-Ohm Bridged
• Total Power (Sum of Rated Power): 400 Watts RMS
• Bridgeable: Yes
• Efficiency (average): 67% @ 4-Ohm
• Crossover Controls: Front High-Pass/Low-Pass (HP/LP): 50Hz-250Hz 12dB/octave Butterworth
• Rear High-Pass/Low-Pass (HP/LP): 50Hz-250Hz 12dB/octave Butterworth
• Tone Controls:     Front Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
• Front Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz
• Rear Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
• Rear Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz
• Function depends upon LP/AP/HP switch position
• Signal Input: Hi/Low level: 2 RCA pair
• Power Input Connector: Captive C-Clamp
• Power Wire Gauge: 8 AWG to 4 AWG
• Speaker Output Connector: Captive C-Clamp
• Speaker Wire Gauge: 8 AWG to 18 AWG
• Heat Sink Type: Cast aluminium
• Cooling: Convection
• Visual Indicators: Power/Protect/Thermal LED
• Input Clip LED
• Output Clip LED
• Circuit Topology Class: Class-A/B
• Frequency Response: 20Hz to 20kHz +/- 1.0dB
• Dimensions (HxWxL): 2.38 x 7.76 x 11.03 (in)
• 6.05 x 19.71 x 28.02 (cm)