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Rockford Fosgate Punch PBR300x4 4-Channel Amplifier
75 Watt
Rockford Fosgate

Punch PBR300x4

4-Channel Amplifier

Technical Highlights

  • 4-channel amplifier with 75W RMS power per channel at 4 ohms.
  • BRT design for high efficiency without switching power supply.
  • Ultra-compact housing ideal for tight spaces.
  • More technical details
€339,00
€339,00 €339,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Delivery
Apr 4, - Apr 7,
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Rockford Fosgate-Punch PBR300x4-4-Kanal Verstärker-masori-kaufen
€339,00
€339,00 €339,00

Punch PBR300x4 by Rockford Fosgate

Punch PBR300x4 is a 4-Channel Amplifier from Rockford Fosgate featuring BRT (Boosted Rail Technology), which generates the rated power without a switching power supply. The ultra-compact housing and MOSFET output stage are designed for efficient performance. It includes a variable high-level DC offset turn-on circuit as well as a 4–6 V high-level DC offset voltage regulation for the input circuit. Features include a 2/4-channel input switch, high-level inputs, and a 12 dB/octave Butterworth crossover. The RMS power is 75 Watts x 4 at 4 Ohms. The dynamic power is 84 Watts x 4 at 4 Ohms. Operation is intended exclusively at 4 Ohms, and the device is not bridgeable. The frequency response ranges from 20 Hz to 20 kHz (±1 dB), with an input sensitivity of 150 mV to 11 V. The circuit topology is Class BR, with an average efficiency of 55% and THD+Noise <1.0%. Optical indicators for power, protection, and gain, convection cooling, an operating voltage of 9–16 VDC, and compact dimensions are included.

Features
  • 4-Channel Amplifier
  • Boosted Rail Technology (BRT) without a switching power supply to generate the rated power
  • Ultra-compact housing
  • MOSFET output stage
  • 2/4-channel input switch
  • High-level inputs
  • 12 dB/octave Butterworth crossover
  • Variable high-level DC offset turn-on circuit
  • Variable 4–6 V high-level DC offset voltage regulation for the input circuit
  • Selectable high-pass at 80 Hz
  • Selectable low-pass at 80 Hz
  • Bridgeable: No
  • Operation exclusively at 4 Ohms
  • RMS power: 75 Watts x 4 @ 4 Ohms
  • Dynamic power: 84 Watts x 4 @ 4 Ohms
Technical Specifications
  • Frequency response: 20 Hz – 20 kHz (±1 dB)
  • Input sensitivity: 150 mV – 11 V
  • Circuit topology: Class BR
  • Efficiency (Average): 55%
  • Total harmonic distortion (THD+Noise): <1.0%
  • Signal input: 2-/4-channel switchable
  • High-level input: Wiring harness, variable DC offset sensitivity
  • Low-level input: 2 pairs of RCA
  • Optical indicators: Power, protection, gain
  • Cable diameter (power supply): 6 mm²
  • Speaker cable diameter: 1.5 mm²
  • Speaker output connections: front channels 4-pin wiring harness, rear channels 4-pin wiring harness
  • Cooling: Convection
  • Operating voltage: 9 – 16 V DC
  • Recommended Fuse: 50 A
  • Average current draw (13.8 V, music): 20 A
  • Maximum current draw (13.8 V, sine): 40 A
  • Dimensions (H x W x D): 3.88 x 10.79 x 17.14 cm
  • Shipping weight: 1.37 kg

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Frequently Asked Questions about Punch PBR300x4

How does the Boosted Rail Technology work in the Punch PBR300x4?

The Boosted Rail Technology (BRT) in the Rockford Fosgate Punch PBR300x4 Amplifier enables an extremely efficient design that operates without a switching power supply. This technology enhances operational efficiency by dynamically adjusting the required voltage to provide the amplifier's rated power. This allows for smaller dimensions, which is particularly useful for applications in limited spaces. BRT, along with a highly efficient MOSFET output stage, increases power output while minimizing the overall size of the enclosure, which proves advantageous in stealth installations.

What are the performance specifications of the Rockford Fosgate Punch PBR300x4?

The Rockford Fosgate Punch PBR300x4 is a 4-channel amplifier that provides an RMS power of 75 watts per channel at an impedance of 4 ohms. The dynamic power output is 84 watts per channel, also at 4 ohms. It is a non-bridgable amplifier designed exclusively for use with 4-ohm speakers. The frequency response ranges from 20Hz to 20kHz with a deviation of +/-1dB, and the total harmonic distortion is less than 1%.

What input options does the Punch PBR300x4 offer?

The Rockford Fosgate Punch PBR300x4 features various input options. A 2-/4-channel input switch allows for different configurations. There are high-level inputs with variable DC offset sensitivity for easy adjustment of the preamp level. Additionally, two low-level RCA inputs are available. The input sensitivity is variably adjustable, ranging from 150 mV to 11 V, allowing for flexible integration into different audio systems. The BRT technology enables efficient operation and ensures optimal power matching.

How is the frequency range of the Punch PBR300x4 regulated?

The frequency range of the Punch PBR300x4 Amplifier extends from 20Hz to 20kHz, covering a full sound spectrum. The integrated 12dB/octave Butterworth crossover provides both high-pass and low-pass filters, each selectable at 80Hz. These filter systems help define frequencies sharply and direct them to the appropriate range for speakers and Subwoofer. This ensures optimal sound performance when playing music, while the high flexibility of frequency adjustment allows for modifications to specific needs.

How secure is the installation of the Punch PBR300x4?

The installation of the Rockford Fosgate Punch PBR300x4 requires secure electrical connections, as it operates with a supply voltage of 9 to 16 VDC and needs a recommended Fuse of 50 A. The Amplifier is wired via 4-pin harnesses for both front and rear channels, ensuring a secure connection of speaker cables of 1.5mm² and main cables of 6mm². The compact dimensions of 3.88 x 10.79 x 17.14 cm should be noted to allow for a space-saving and discreet installation at the desired location.

What technical features does the Punch PBR300x4 offer for sound optimization?

The Punch PBR300x4 offers special technical features for outstanding sound optimization. This includes the MOSFET output stage, which provides clear and powerful amplification. The variable DC offset voltage control in the high-level range helps minimize interference and achieve a clean sound. Furthermore, an average efficiency of 55% is achieved, improving energy efficiency. Visual indicators for power, protection, and gain provide visual feedback, while the advanced Class BR circuit topology ensures a stable and reliable audio experience.

How do I include the Punch PBR300x4 in existing audio systems?

Integrating the Punch PBR300x4 into an existing audio system is flexible due to the variable high-level inputs and the 2/4-channel input switch. The variable DC offset voltage regulation facilitates integration into OEM systems by adjusting the necessary voltage to minimize distortion. Thanks to its compact design, the Amplifier fits easily into tight spaces and can be used in motorcycles, RVs, or smaller vehicles without requiring a large installation area.

What are the dimensions of the Rockford Fosgate Punch PBR300x4?

The Rockford Fosgate Punch PBR300x4 Amplifier has compact dimensions of 3.88 cm in height, 10.79 cm in width, and 17.14 cm in depth. This compact design allows for a variety of installation options, especially in vehicles with limited space. Nevertheless, the optimized construction does not affect the performance or functionality of the Amplifier. This format is particularly suitable for hidden and discreet installations, meeting the desire of many users for minimal visibility.

What operating conditions apply to the Punch PBR300x4?

The Punch PBR300x4 Amplifier operates under a supply voltage of 9 to 16 VDC, making it compatible with most vehicle batteries. A maximum current draw of 40 A is recorded in sine wave operation, while the average current draw during music use is about 20 A at 13.8 V. The recommended Fuse is 50 A, ensuring proper protection. Convection cooling ensures that the Amplifier remains thermally efficient and provides consistent performance even under demanding conditions.

Why is the Punch PBR300x4 not bridgeable?

The Punch PBR300x4 is not bridgeable because it is specifically designed to operate with a 4-ohm load. The non-bridgeable configuration helps reduce overall complexity and increases reliability in operation. This design ensures that each of the four channels is precisely tailored to the desired output, avoiding efficiency losses. The fixed 4-channel configuration provides stable output performance without the risks of potential mismatches when bridging circuits, preserving the integrity of the Amplifier's audio.

Manufacturer information / responsible person

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

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