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Four-channel, 4-ohm (only) amplifier with 75 Watts x 4 @ 4-Ohms RMS power rating and 300 watts RMS total power.
Designed for stereo front/rear systems that require little space--just 1.53 x 4.25 x 6.75 inches.
High- and low-level inputs with variable 4-6 volt hi level DC offset voltage input turn-on control.
Selectable 80Hz LP/AP/80Hz HP filter @ 12dB/Octave.
One-year limited warranty.
Imported from USA.
The PBR300X4 is a full-range 4-channel amplifier designed for
stereo front/rear systems that requires little space. Rockford's
Boosted Rail Technology provides an ultra efficient-design
generating 300 Watts of power, and the amplifier also boasts a
variable hi-level DC offset turn-on circuit for easy installation
into any OEM system. Great for motorcycles and recreational
Rockford Fosgate Punch Series Amplification
For over 25 years, Punch amplifiers have set the standard in the
car audio amplifier industry and they continue to do so today.
It's the reason that they have become the most popular amplifiers
in the world. Each of the Punch family amplifiers reproduce sonic
perfection along with impressive power in a compact chassis.
Rockford Fosgate PBR300X4 A full-range 4-channel
amplifier designed for stereo front/rear systems that requires
300 Watts in an Ultra-Compact Amplifier
Power ratings on Rockford Fosgate amplifiers conform to CEA-2006
industry standards. These guidelines mean your amplifier's output
power ratings are REAL POWER numbers, not inflated marketing
Discrete Surface Mount
DSM--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.
Dynamic Thermal Management
Heat is often inefficiently dissipated across a heatsink causing
"hot spots". This impacts important design goals, which are:
* Keeping internal components cool.
* Maximizing potential of all components.
* Reducing distortion for better sound quality.
* Increasing efficiency to produce more power.
Rockford Fosgate engineers have developed an award winning
cooling design called DTM. This patent pending design seamlessly
manages the output of power supply temperatures, while evenly
distributing the excess heat across the entire amplifier.
MEHSA3 (Maximum Efficiency Heat Sink Application--gen. 3) 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 combined with our optimized
heatsink designs, DSM (Discrete Surface Mount) technology and
MOSFET devices, allows Rockford Fosgate to squeeze more watts per
cubic inch from every output device as well as provide consistent
thermal stability. The 3rd generation creates a dielectric layer
between the ceramic topside and the aluminum base that retains
all of the electrical isolation and capacitive coupling of the
original MEHSA material increasing it's thermal conductivity. The
higher power handling results in a 20% reduction in thermal
Rockford Fosgate PBR300X4 Discrete surface mount
componenents for ultra-efficient operation and lower operating
NOMAD is a "real time" analog computer that protects your
amplifier from shorting speaker wires and dangerously low speaker
In the early 70's, Jim Fosgate studied the acoustical properties
of automobiles. Utilizing a real-time analyzer and pink noise, he
would graph out the acoustical characteristics of each car he
tested. Jim discovered three problems that were common to all
* A midbass hump between 100-275Hz
* A steep roll-off of high frequencies from 2kHz up to 20kHz
* Reduced bass response below 50Hz
The Punch EQ on-board equalization circuit helps correct for
these acoustical deficiencies in the listening environment. When
set to Low-Pass(LP) operation, it becomes a variable Bass Boost.
When set to High-Pass (HP) operation, it acts as a variable
Mid-Bass and Treble Boost. When set to All Pass (AP) operation,
both Bass and Treble frequencies are boosted.
About Rockford Fosgate
Setting the standard for excellence in the audio industry, the
Rockford Corporation markets and distributes high-performance
audio systems for the mobile audio aftermarket and OEM market.
Headquartered in Tempe, Ariz., Rockford Corporation is a publicly
traded company and manufactures its products under four brands:
Rockford Fosgate, Rockford Acoustic Design, Lightning Audio and
Number of Channels: 4 Rated Power: 75
Watts x 4 @ 4-Ohms Total Power: 300 Watts
Dynamic Power: 300 Watts @ 0 degrees RES
Bridgeable: No Crossover Controls:
Selectable 80Hz LP/AP/80Hz HP @ 12dB/Octave
Signal Input: Hi-Level: Variable DC offset sensitivity
Low-Level: 2 Pair RCA Power Input Connector:
Block Harness Power Wire Gauge: 10 AWG
Speaker Output Connector: 4-Pin Harness
Speaker Wire Gauge: Harness 16 AWG Heat
Sink Type: Extruded aluminum Cooling:
Convection Visual Indicators: Power,
Protect, Boost Circuit Topology Class:
Class BR Frequency Response: 20Hz - 20kHz
+/-1dB Dimensions (HxWxL): 1.53" x 4.25" x
(3.90cm x 10.8cm x 17.2cm)
What's in the Box
Rockford Fosgate PBR300X4 Amplifier, Speaker Output Harness,
Input Harness, Documentation