1.888.955.6000
crutchfield.com
Crutchfield

Rockford Fosgate Punch P450.2

2-channel car amplifier
100 watts RMS x 2

Zoom
  • Rockford Fosgate Punch P450.2

    Front

  • Rockford Fosgate Punch P450.2

Crutchfield OMC logo
We don't check this item for fit or compatibility.
Item #: 575P4502
 

Review Summary

DISCONTINUED
 
This item is no longer available to purchase.
 
Contact us for other options
 
Call   Email  
 
 
 
 
 

Our take on the Rockford Fosgate Punch P450.2

by Ken Nail
Rockford Fosgate

My system has plenty of power. Who needs an amp?

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.

Rockford Fosgate keeps making a good thing better with Punch amps — and you'll find one for every type of car audio system, from mild to wild.

Rockford Fosgate continues its commitment to outstanding design with the 2-channel Punch P450.2 amplifier. Specially-designed transistors perform better than the "off-the-shelf" models most manufacturers use. Additional heatsink material keeps these critical power components running cooler, reducing distortion and increasing amp efficiency.

The P450.2 delivers the power you need to kick up the performance of full-range or component speakers, or you can run it in single-channel mode to send 450 watts to your subwoofer. The variable frequency filters adapt the amplifier to fit the job at hand, while the wired Punch Bass EQ kicks up the lows when it's time to get the car shaking.

See more info on this item

Highlights:

  • 2-channel car amplifier
  • 100 watts RMS x 2 at 4 ohms (225 watts RMS x 2 at 2 ohms)
  • 450 watts RMS x 1 in bridged mode (4-ohm stable in bridged mode)
  • variable high- and low-pass filters (40-400 Hz, 12 dB per octave)
  • wired Punch Bass EQ (0-18 dB at 45 Hz)
  • Focused Mass Heatsink design
  • removable connector cover
  • special-design TO-247 MOSFETs run cooler than standard transistors
  • CEA-2006 compliant
  • preamp inputs and outputs
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 11-3/4"W x 2-1/8"H x 11-1/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels) 100 x 2
Peak Power Output (Watts x Channels) 1350 x 1
Power at 2 Ohms (Watts x Channels) 225 x 2
Bridged Power (Watts x Channels) 450 x 1
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2
Best Frequency Response 20-200k Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 80 dB
Input Voltage 14.4v
Features
Amplifier Class AB
Low-Pass Crossover Frequency 40-400 Hz
Low-Pass Slope (dB/octave) 12 dB
High-Pass Crossover Frequency 40-400 Hz
High-Pass Slope (dB/octave) 12 dB
Bass Boost 0-18 dB
Bass Boost Frequency 45 Hz
Fan Cooled No
Fuse Rating 30 x 2
Speaker Level Inputs No
Preamp Outputs 1 pair
Width (inches) 11-11/16
Height (inches) 2-1/16
Depth (inches) 11-1/16
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

Download owner's manual

  • Two channel amplifier
  • One 7/64" Allen wrench
  • Four 3/4" Self-tapping screws
  • Remote Punch Bass controller
  • Remote mounting bracket
  • Two 3/8" Self-tapping screws
  • 16.25' Flat remote cable (with RJ-45 plugs on both ends)
  • Installation & Operation manual (English/French/Spanish/German/Italian)
  • Punch Amplifier Performance Verification Certificate

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Input and Output Notes
Specifications
Warranty
Fuse Note

Features

Removable Cover: The Rockford Fosgate Punch P450.2 amplifier features a removable terminal cover. It conceals all speaker, signal, remote, power, and ground connections, as well as the gain and crossover frequency controls for a cleaner installation.

Cast Aluminum Heatsink: The Focused Mass cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

INDIGO (INDexed Ideal Gain Operation): The INDIGO PWM (pulse width modulation) power supply is designed to make the most of the situation it is presented with. When battery voltage is low, you are guaranteed to get the power you paid for. When voltage increases, the amp makes even more power.

MEHSA (Maximum Efficiency Heat Sink Application): MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.

TOPAZ (Tracking Operation Pre-Amplifier Zone): TOPAZ is a circuit that eliminates noise. The TOPAZ circuit prevents ground loops by allowing the output impedance of the source unit to determine the signal ground impedance the amp sees. This virtually assures that the signal ground out of the head unit and the signal input ground of the amplifier are identical, eliminating any chance for a ground loop. The result is a 30-40dB improvement of the isolation between input ground and chassis ground.

Trans-ANA (TRANSconductance Active Nodal Amplifier): The trans-ANA is a circuit that allows the audio signal to pass through the amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of drive transistors. Signal linearity is assured by an active node formed  by the drive transistors at ultrasonic frequencies. The result is crystal clear sound quality.

NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.

DSM (Discrete Surface Mount): In the manufacturing process high speed robotics are used to place 0% tolerance resistors and large board traces providing greater reliability and efficiency.

TO-247 MOSFET: The Punch P450.2 utilizes ultra high performance MOSFET output devices, giving the amplifier more power handling capability as well as lower thermal impedance for more reliable operation, even under the harshest load conditions.

Internal Crossover: The amplifier's internal crossover is a 12dB/octave Butterworth filter selectable for high-pass, all-pass (full range) or low-pass operation variable from 40Hz to 400Hz.

Remote Punch Bass: The Punch Bass helps correct for acoustical deficiencies in the listening environment by helping reproduce full range sound without adding excessive boost. The Punch Bass control has a narrow band adjustment centered at 45Hz, variable from 0dB to +18dB. The supplied Punch Bass wired remote can be mounted in a variety of locations. The module's case can be removed and positioned with the mounting bracket above or below the module. Without the case the module can be flush mounted in your vehicle's dash (requires a 2" x 7/8" cutout with a maximum panel thickness of 3/8"). The wired remote is 2.294" wide, 1.293" tall and 1.509" deep (2.606" including the knob and cable connection). The included cable is 16.25' long.

RCA Pass-Thru Jacks: The pass-thru jacks provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location. The pass-thru jacks output a full-range signal.

Power Indicator and Protection LEDs: There are three LEDs on the top of the amplifier. A blue LED illuminates when the unit is turned on. A yellow Protect LED illuminates if a short circuit or too low an impedance is detected at the speaker connections. A red Thermal LED illuminates if the amplifier overheats. The amplifier will automatically shut down if either the yellow or red LED indicates amplifier trouble.

Input and Output Notes

Power Connections: The power and ground terminals are nickel-plated captive c-clamp wire connectors and will accommodate up to 4-gauge wire. The remote turn-on terminal will accept wire sizes of 12- to 24-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The nickel-plated clamp wire connectors will accept wire sizes of 8- to 18-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Remote Punch Bass Connection: An RJ-45 jack is provided for connecting the supplied Remote Punch Bass cable.

Specifications

CEA-2006 Compliance: The specifications given by Rockford Fosgate for the Punch P450.2 amplifier comply with the new CEA-2006 Amplifier Power Standard from the CEA (Consumer Electronics Association). All manufacturers who comply with the standard can display the CEA-2006 logo on their product.

Performance Verification Certificate: Each amplifier comes with a Performance Verification Certificate which lists the results of a 10-point performance inspection as well as a measurement of the actual power output of that amp.

Warranty

Extended Warranty: A one year warranty extension, for a total of two years, is provided by Rockford Fosgate when this amp is wired using a qualifying Rockford Fosgate amplifier wiring kit. Qualifying wiring kits include the CP4POS CP4CKDS.

Fuse Note

Fuses: The P450.2 has two 30 amp fuses. Like the other amps in the series, one fuse is under the terminal cover, to the right of the power connections. The second fuse is under the main circuit board cover.

 
Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

Rockford Fosgate Punch P450.2 Reviews

Average Customer Review:

5 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

wow...

Written By Matt, Lebanon, Ohio on Friday, September 12, 2008
 
This amp is great. I have it powering a T110D2 bridged to 4 ohms, and it sounds great. I had a little trouble at first with the thing shutting off, but that was because of the way my buddy was controlling it with my 9884 Alpine. Called Rockford, and within 2 days, it was fixed and sounding better than ever. It's absolutely awesome, doesn't take up much space, and this set-up hits like no other. I have the gain around 2/3-3/4 and the sub is sealed and it's much louder than my buddies 2 P2's in a ported box with a 780 watt amp maxed out... oh, and according to my birthsheet, it's putting out 478 rms at it's current setting...
Was this review helpful?    Yes | No
 
5 out of 5

So far so good

Written By Chad, Miami Beach, FL on Thursday, August 02, 2007
Crutchfield Customer Review (What's this?)
 
SO far so good. This amp seems to be just right for my 2 RF 12's. Its only the first day so I cant be sure on durability but the sound is definately powerful and clean. Definately more power than the posted wattage too. The 450 was just right b/c I didnt feel the 400 was enough power and the 500 costs so much more. If it holds up, best amp for the price for sure
Was this review helpful?    Yes | No
 
2 out of 5

Not Great

Written By IGO, Las Vegas on Tuesday, July 03, 2007
 
I replaced a 50x2 @ 4ohm KAC something Kenwood amp of 15 year vintage with this amp. The Kenwood is much more musical and after setting the gain back on the RF to a point that noise was no greater than the kenwood with optimum gain, there was no difference in SPL. Proof is in the mush. RF is made to be loud, others are more pleasing to listen to.
I put my old Kenwood amp back in my truck.
Was this review helpful?    Yes | No
 
5 out of 5

great, clean, powerfuly amp

Written By mtp, Los Angeles on Thursday, June 21, 2007
Crutchfield Customer Review (What's this?)
 
have this amp bridged to 4 ohms (450rms)powering two rockford 12" p2s and it does it perfectly (have the pl2 212 box/subs) for the price and what i've seen from it so far, i dont think theres a better amp for this price

hasnt gotten hot or even that warm yet, and i use it all the time. the bass boost control really pumps up the bass and im pretty sure my rear view mear is going to fall off soon
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Rockford Fosgate Punch P450.2

Written By Jason, Chicago (in the burbs...) on Wednesday, May 17, 2006
Crutchfield Customer Review (What's this?)
 
All I can say is WOW! I have this amp powering 2 8" Kicker compVR's with dual 4ohm voice coils. I wanted a decent sub amp that didn't take up too much space in my truck. I have a 2004 F150 super cab.

For you guys that have this same truck, you can actually fit this amp and the P450.4 both behind the rear seat back. As long as you mount them on the passenger side. There is also plenty of room for a 1 farad stiffening cap behind the seat back on the drivers side.

Anyway, you will definately not be dissapointed with a Rockford amp! The birth certificate for mine showed actual tested power to be 195 watts x 2 @ 4 ohms!!! The amp is only rated to be 100 x 2 @ 4 ohms, so that is almost double it's rated output, incredible! $300.00 is a steal for this amp!
25 out of 30 people found this helpful
Was this review helpful?    Yes | No
 

Add accessories for the Rockford Fosgate Punch P450.2

You'll need an amp wiring kit to install your new amplifier, as wiring is not included. See all categories & accessories

Rockford Fosgate RFK4X Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire
12 people say
Your Price: $159.99
Add to Cart
Rockford Fosgate RFK4 4-gauge amplifier power wiring kit
10 people say
Your Price: $114.99
Add to Cart
T-Spec 12-gauge Speaker Wire Black/white jacket — priced per foot
29 people say
Your Price: $1.99
Add to Cart
T-Spec 2-Channel RCA Patch Cables Available in 7 different lengths (14-foot)
25 people say
Your Price: $17.99
Add to Cart
T-Spec Capacitor 1.5-farad capacitor with red LCD meter
11 people say
Your Price: $79.99
Add to Cart
S&G Tool Aid 87650 Door Trim and Panel Removal Tool
67 people say
Your Price: $9.99
Add to Cart
Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
8 people say
Your Price: $49.99
Add to Cart
Metra Crimp Tool and Connectors Package contains crimp tool and over 150 pieces
15 people say
Your Price: $19.99
Add to Cart
S&G Wire Cutter/Stripper Tool Cuts and strips 12- to 22-gauge wire
15 people say
Your Price: $19.99
Add to Cart
InstallCard: Amp or Equalizer Prepaid professional amplifier or EQ installation
17 people say
Your Price: $79.99
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

3 Year Protection Plan
3 Year Protection Plan
Your Price: $34.99
Add to Cart

For a more in-depth review and enhanced detailed information on the Rockford Fosgate Punch P450.2, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_575P4502/Rockford-Fosgate-Punch-P450-2.html ).