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Rockford Fosgate Punch PBR300X4

300W RMS Punch Series Boosted Rail Compact 4-Channel Amplifier

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• RMS 75 x 1 @ 4 ohms
• Features Rockford Fosgate's Class-BR Topology
• CEA-2006 Compliant
• Ultra Compact Chassis
• Boosted Rail Design
• Dimensions: 6.75"L x 4.25"W x 1.53"H

Learn more about the pbr300x4

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Description


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Rockford Fosgate Punch PBR300X4

PBR300X4 - 300 Watt Amplifier with Boosted Rail Technology

To achieve higher efficiency with lower distortion, Rockford's BR topology combines, Cycle-by-Cycle, an indirectly coupled high/low voltage rail linear topology with a switched high/low voltage linear rail topology. This combination yields an unsurpassed power density (watts per cubic inch). In addition, this patented technology allows the chassis design to be much smaller than traditional sized amplifier - 1.53" x 4.25" x 6.75" - making this amp a great solution for smaller stealth installations, motorcycles and recreational vehicles. In fact, now, with the introduction of the Rockford Fosgate RFKHD9813, installing the PBR300X4 into select 1998 - 2013 Harley Davidson motorcycles has never been easier. With unparalleled technology, flexible installation options, and big power from such a small footprint Rockford Fosgate has ensured that everyone can put a little Punch in any system.




MEHSA³

MEHSA³ - Max Efficiency Heat Sink Application

MEHSA3 is a proprietary process that yields up to five times better heat transfer than traditional FET mounting techniques, using the exact same components. A multi-layer insulated metal substrate operating with minimal thermal resistance spreads heat both downward & outward to quickly dissipate heat from each device across the heatsink. This process allows Rockford Fosgate to squeeze more watts per cubic inch from every output device as well as provide consistent thermal stability. The higher power handling results in a 20% reduction in thermal impedance.


DSM - PBR300X1 Model Shown

DSM - Discrete Surface Mounted Components

An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance parts and large board traces. The discrete components are laser etched to meet a particular value and a very low tolerance. This lower tolerance improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature. These superior components are used by aerospace, automotive, and cellular manufacturers.








 

 

 

General Features:

  • Punch Series BR Full Range 4-Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 chan.
      This amplifier is only capable of operation at 4-Ohm
  • Features Rockford Fosgate's Class-BR Topology
  • CEA-2006 compliant amplifier
  • 2/4 channel input switch
  • Ultra compact chassis
  • MOSFET output stage
  • Boosted Rail amp technology
  • Convection cooling design
  • Extruded aluminum heat sink
  • Low level RCA input connection
  • High level speaker input connection
  • 12dB / Octave Butterworth crossover
  • Selectable High-Pass / Low-Pass Filter @ 80 Hz
  • Detachable Compression Terminals
  • LED power (blue) and protect (red) indicators
  • Variable 4-6 volt hi level DC offset voltage input turn-on control
  • Features MEHSA3 (Maximum Efficiency Heat Sink Application - gen. 3)
  • Perfect for smaller stealth installations, but is not a weather or waterproof amplifier
  • Great for motorcycles and recreational vehicles
  • Wiring w/ Mounting Plate for Harley-Davidson Motorcycles Available: Rockford Fosgate RFKHD9813
  • 16 Gauge speaker wire output terminals
  • 10 gauge OFC power and ground wiring is recommended for installation.
  • 1-year Manufacturer's Warranty


 

Amplifier Specifications:

  • Input sensitivity:
    • Low level: 150mV - 4V
    • High level: 400mV - 11V
  • Operating voltage: 9 - 16 VDC
  • Recommended fuse rating: 50 A x 1
    (not included)
  • Max. current draw (13.8V Sinewave): 40 A
  • Average current draw (13.8V Music): 20 A
  • Frequency response: 20 - 20,000 Hz, +/- 1 dB
  • Total harmonic distortion: <1.0%
  • Signal to Noise Ratio: ≥100 dB
  • CMRR: >55 dB @ 1 kHz
  • Damping Factor: >200
  • High-Pass: Selectable 80Hz @ 12dB/Octave
  • Low-Pass: Selectable 80Hz @ 12dB/Octave
  • CEA-2006 Power Rating: 75W x 4 @ 4Ω ≤1.0% THD+N
  • Weight: 3.038 lbs
  • Dimensions: 6.75"L x 4.25"W x 1.53"H


Check out the Rockford Fosgate Punch PBR500X1 Owner's Manual


Check out the Class-BR Amplifier Installation Advisory From Rockford Fosgate

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
75 watts x 4 channel
Amplifier Specifications
Series
Punch BR Series
Amplifier Class
BR
Number of Channels
4-Channel
Total RMS Power Output
300 watts
Maximum Input Gauge Size
10 AWG
Minimum Impedance Unbridged
4 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
<1.0%
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
Fixed 80 Hz
Low-Pass Crossover Frequency
Fixed 80 Hz
Signal-to-Noise Ratio
100 dB
Remote bass/level controller
No
Fuse Rating
30A X 1 In-Line Fuse Recommended
Strappable
No
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
High-level input wiring harness w/ molex connector
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

PBR300X4

Weight:

2.50lbs

Internal SKU:

pbr300x4

Internal Product ID:

34758

Customer Ratings & Reviews



5 star
65%
4 star
25%
3 star
4%
2 star
2%
1 star
4%



Durability
4.5
Value
4.7
Features
4.7
Design
4.9
Usability
4.8

Customer Reviews

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Great Amp!

I just finished installing one of these amps in an '89 Porshe Carrera...wow! I still am in disbelief how this tiny amp pushed 2 sets of JBL components.. This car screamed and my customer was extremely happy with his purchase. I have been installing for over 14 years professionally and still can't believe this little amp did what it did..10 gauge wire is recommended but I managed to install it with 8 gauge... I could see the amp running hot if the wire run is long using 10 gauge. For future purchasers, buy 8 gauge wire if your run is longer than 10 ft.

By Berkeley Auto Sound and Security, LLC on September 11, 2013

86

found this helpful.

Great Little Amp

Powerful little amp installed on a Harley Davidson Street Glide.

By Randy on June 18, 2013

85

found this helpful.

Great Amp. Great for Motorcycles

Small. Compact. Easy installation. Great power. Not a lot of adjustments on amp.

By Rocket 38 on September 10, 2013

85

found this helpful.

good while it lasted

The amp made my speakers (Prime6x8) sound like they were top of the line. i had this amp hooked up for about 14 days until all of a sudden no sound would come through my speakers anymore just a buzzing noise the amp would turn on but no sound all cables were fine.

By jacob on March 1, 2013

82

found this helpful.

This little thing kicks!

I installed this into my motorcyle fairing pushing 4 - 51/4. What a difference. Now I can hear it over my loud pipes!

By Chris on April 22, 2014

79

found this helpful.

Nice little amp.

Amp has a really small footprint. The amp I have is putting out 87 watts per channel making for a total of 348 watts. I don't need the gain turned up past 3 in order to make my ears ring. I have it hooked up to two Pioneer 4x6 speakers and two Pioneer 6x9 speakers and it rocks them all day and all night.

I had my entire stereo professionally installed and I don't have any problems with it.

By Maynard on January 30, 2013

79

found this helpful.

Great little package

I was very unsure whether or not to get this amplifier based on the mixed reviews but I did anyway. It has now been 6 months and not a moments trouble. To tell you the truth the size and sound reminds me of the old punch 75 amps. Great sound from a small package. I would definitely not hesitate to purchase this again.

By Christopher on November 22, 2012

79

found this helpful.

Great little amp

This little amp in combination with a good set of speakers is well worth the money. I mounted it in my fairing of my motorcycle. It easily powers two six inch rounds up front, and two 6x9's in the bags. It sounds great without any distortion. Installation was simple and quick. I would definitely recommend this amp.

By Steve on November 19, 2014

79

found this helpful.

Good strong power

Good amp for bikes just can't turn it up all the way hurts my ears.
High distortion but that it due to the Harley deck that has .5thd where I'm used to like .001 THD. I am sure if Harley made a radio with low inputs it would be cleaner sound. All that said I would buy this amp again for any bike hi or low inputs as I always been fond of Fosgate

By Robert on March 26, 2014

79

found this helpful.

Great little amp!

I got this for my husband for the holidays. It is small and compact and can be easily hidden within the vehicle. It can get a little warm but he has not expierenced any issues, if you are worried you can always mount it near/ with a cooling fan. He is very pleased with this little amp. It packs a punch.

By Zee on January 19, 2015

78

found this helpful.

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