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Rockford Fosgate PBR300X4 Punch BRT 300 Watt Ultra Compact 4 Channel Amplifier Review
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 vehicles.
Rockford Fosgate Punch Series AmplificationFor 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. |
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 ratings.
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.
Heat is often inefficiently dissipated across a heatsink causing "hot spots". This impacts important design goals, which are:
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 impedance.
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.
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 cars:
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.
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 InstallEdge.com.
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 High-Level: harness 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 6.75" (3.90cm x 10.8cm x 17.2cm) |
Rockford Fosgate PBR300X4 Amplifier, Speaker Output Harness, Input Harness, Documentation
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JVC KD-R300 30K Color-Illumination Single-DIN CD Receiver with Remote Control and J-Bus Expandability Review
A great way to kick off a new system. Click to enlarge. |
Front panel auxiliary input for external audio devices. |
Includes full-featured wireless remote. Click to enlarge. |
Variable-Color Illumination
Variable-Color Illumination lets you get just the look you want, or match your vehicle's interior lighting, offering 30 preset color choices--or customize your own from over 30,000 variations.
CD and MP3/WMA Playback
Enjoy your favorite CDs or burnt CD-R/RWs, or get more bang for your buck with MP3/WMA discs--burn hours of music to one disc and get ID3-TAG support for display of artist and song info.
AM/FM Radio with HS-IVi Tuner
Sometimes you just want to listen to the radio. The KD-R300's AM/FM radio features automatic presetting of strongest signals and 6 presets for each band.
The HS-IVi tuner features higher sensitivity, thanks to three IF bandwidths (wide, middle and narrow). It also includes AM Noise Canceller plus upgraded IF filters that help avoid the distortion caused by interference from adjacent stations.
To get even more from the airwaves, add JVC optional hardware for HD Radio or SAT Radio reception.
Dial in Your Sound
Perfect your sound with a three-band parametric equalizer and Loudness control for low level listening.
Input and Output
A pair of preamp outputs (rear or subwoofer) is provided for adding a little extra power to the KD-R300's onboard 50W x 4 amplifier.
A 3.5mm front panel auxiliary input is also included for use with iPods, MP3 players, or other external audio devices.
Bluetooth Ready
Bluetooth Wireless Technology is available with an optional adapter. A maximum of five compatible mobile phones can be registered for hands-free calling. With voice-recognition mobile phones, you can dial by just saying the name in your phone book. The wireless functions work even if your mobile phone is tucked away in your bag or pocket. You can also stream music from a compatible digital audio player, for listening on your car stereo.
Ready for iPod
You can listen to iPod music with an optional KS-PD100 adapter. The iPod can be controlled from the head unit, and song information is displayed with the same categories and layers as an iPod.
Wireless Remote
A full-featured wireless remote is include for controlling receiver functions.
What's in the Box
JVC KD-R300 Receiver, trim ring, sleeve, remote control, wiring harness, installation hardware, installation manual, instructions
Enjoy music from digital audio players and other external devices by easy connection via the KD-R300's Front AUX Input. The Multi-Color Illumination feature allows selection from over 30,000 customizable faceplate illumination colors. The unit is compatible with MP3 and WMA format, and you can customize the sound to your taste with 3-band parametric iEQ . The MOS-FET power amp and 24-bit Resolution DAC offers an enhanced listening experience. Bluetooth Wireless Technology, iPod, and HD Radio are also available with optional add-on devices.