2015 Toyota Tacoma
Crutchfield Customer Review (What's this?)
Great amp!!! Awesome price!!
Pros: Quality, price
Cons: None so far
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Item #: 575R300X4
$169.99 Earn up to 170 Rewards points
Rockford Fosgate performance in a small package. The Prime Series R300X4 4-channel amp can drive your speakers with 50 watts RMS each, so you'll really feel your tunes rockin'. Or, you could switch the R300X4 to 2-channel mode to run a couple of subs with 150 watts RMS each — when you buy a bigger amp for your subs later on, you can still use this 4-channel to drive all your speakers. Smart move.
You can use the high- and low-pass filters and Rockford Fosgate's famous Punch boost to get maximum performance from the speakers in your vehicle. And speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.
The R300X4's heavy cast-aluminum chassis efficiently draws damaging heat away from its internal components, ensuring reliable, long-term play. The amp's built-in sensors keep track of the output current and power supply temperature, ensuring that plunging speaker impedances (they change constantly during play) or even a short circuit won't hurt anything. Your driver's seat will become your favorite place for listening to music once this Prime amp goes to work.
Great amp!!! Awesome price!!
MikeV530, Philadelphia, PA
Great amp!!! Awesome price!!
Pros: Quality, price
Cons: None so far
Rated almost 400 watts. Sound is excellent for an entry level unit. I never hear systems that run anywhere near as loud as this. Subs yes, but not everything else. Pushes my Sony 6 x 9 speakers almost like subs. I wouldn't trade my Sony speakers for Polks if they were free. In fact, I'd throw them out and get more 6 x 9 Sonys. With an amp like this driving them the only purpose for a sub is to broadcast bass and go deaf. Sound quality is amazing even at lower volumes. Plenty of headroom for my speakers runing this at 50% and under with zero gain.
Pros: Sound Quality. Pumps Bass. Max Headroom. Can Run Without Big Three.
Cons: Big. Heavy. Hard to Mount in Newer Cars with Few Flat Surfaces.
I mounted the amp under the front passenger seat which fit perfectly and easy to get to the controls! I'm still tweaking the amp but as an amateur I configured it to a good sounding for my car. I'm running the Polk 5 1/4 speakers for the front and it sounds way better than the Sony speakers I previously were running! Maybe I'll get Polk rear speakers for a better bass! I don't have that solid bass but I don't want the loudness of a sub-woofer!
Pros: Easy to hook up and adjust the gain to the speakers!
Cons: If anything, I'm not getting to solid bass from this unit! Maybe it's my rear speakers but not much cons to this unit!
Very clean 4 channel sound.
Pros: seems to be very efficient.
WITH THE HELP OF YOUR TEAM, I GOT EXACTLY WHAT I WANTED///BETTER SOUND, CLEARER MUSIC AND WITH A LITTLE UMPFFF. IM VERY HAPPY
Pros: BETTER AND STRONGER SOUND THAN MY ORIGINAL RADIO
Just installed this to replace an alpine MRPF300 tht never impressed me. Night and day difference. This RF is sooo much better, finally the system sounds like I thought it should. I blamed head units, speakers, previously, but the problem was the two alpine amps, mrp500 and MRPF300. I replaced both with similar rated and priced RF Prime units, and the difference is staggering. Simply switched out the amps, changed nothing else. I'll never use another brand of amp than RF from now on. Oh, and the birth certificate showed 416w RMS, vs 300w rating.
Pros: Great sound, great price, good looking, adjustments on top
Cons: I didn't buy it soon enough
Great amp, very flexible with different setups, using it to drive 6x8 Polk coaxials front and rear and has more than enough power. Very happy with this amp, Install was very easy nice size gives you lots of choices.
Pros: Great power,very clean,very flexible with different setups
Works great. Easy setup.
Excellent amp. Provides more than enough power for 6 1/2 inch front and rear component speakers that I have in the doors. Also allows me flexibility to change/ upgrade the speakers in the future if wanted. I Have the gain set at half power right now.
Pros: Small and powerful. Looks good and simple to hook up. Sound comes out clear at high volume.
Cons: Not many I can think of yet. To be picky , it could have bigger connections for wire inputs and outputs. They seem small for the power of the amp.
best amp to get for your car speakers clear sound amazing!
|RMS Power Output (Watts x Channels)||
50 x 4
|Peak Power Output (Watts x Channels)||N/A|
|Power at 2 Ohms (Watts x Channels)||75 x 4|
|Bridged Power (Watts x Channels)||150 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||80 dB|
|Low-Pass Crossover Frequency||50-250 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||50-250 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost||0, 6, 12 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||Harness|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Overview: The front and rear sections of the Rockford Fosgate Prime R300X4 4-channel amplifier are bridgeable, so it can be wired in 4-channel, 3-channel, or 2-channel mode.
CEA 2006 Compliant: The R300X4's power ratings and signal to noise ratio are measured according to the uniform standards advocated by the Consumer Electronics Association (CEA). This allows you to accurately compare these specifications for all CEA 2006-compliant amplifiers, even from different brands. Manufacturers who adhere to these standards can display the CEA 2006 logo on their products and packaging. CEA2006 Specifications for this amplifier are:
LED Indicator: The amplifier is equipped with an LED power/protect indicator. The LED illuminates blue when the unit is turned on. It illuminates red if the thermal or short circuit protection circuit is engaged, and the amplifier will automatically turn off.
Mounting: The amplifier can be mounted vertically or horizontally using the supplied mounting screws. The amplifier should never be mounted in an engine compartment as this will void the warranty.
Gain Controls: The front and rear amplifier channels have independent gain controls. Each rotary control is labeled 1 to 11 and has a sensitivity range of 150mV to 4V when using the RCA inputs, 450mV to 12V when using the speaker level inputs.
Crossover: There are also independent 12 dB/octave crossovers for the front and rear channels. Crossover switches allow you to choose low-pass, high-pass, or full-range operation. The crossover points are continuously variable from 50 to 250 Hz.
Punch EQ: The Punch EQ bass boost circuits are individually selectable, 0 (flat), +6 dB, or +12 dB and centered at 45 Hz.
Power Terminals: The power and ground terminals are nickel-plated set screw terminals and will accommodate up to 4 gauge power and ground wires.
Fuse: An external 50-amp fuse (not included) must be installed on the power wire at the battery. If a wiring kit is used which includes a fuse with a value other than 50-amps, the original should be replaced with a 50-amp fuse.
Remote Terminal: The remote turn-on terminal is a nickel-plated set screw terminal that will accommodate up to an 8 AWG wire. It's used to remotely turn the amplifier on and off.
Speaker Terminals: The four pair of speaker outputs are nickel-plated set screw terminals what will accommodate up to 8 AWG speaker wire.
RCA Input Jacks: Front and rear RCA input jacks provide an easy connection for preamp level inputs. They are nickel-plated to resist signal degradation caused by corrosion.
Speaker Level Input: Two speaker level input harnesses are included, making it easier to add the amplifier to a factory radio or to a receiver with no preamp outputs.
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Brand [ Walter Apr 23, 2016 ]
Rockford Fosgate is best brand for amps [ Alex Mar 27, 2016 ]
are you kidding its RF [ barry Mar 19, 2016 ]
Should be no problem using factory wires [ DENNIS Mar 17, 2016 ]
THis is personal preference, you can use factory wiring, you'll just need to map out the color codes on wires to get your front and back left to right correct. Typically factory wiring is small gauge wiring, a lot of people prefer large diameter wires, believe to increase sound quality. I prefer larger than factory wires. But it's a lot of work and extra money. Most cases factory should be fine tho. I first noticed difference in sound quality in home stereo, using monster cable instead of small gauge. My ears seem to like bigger cables. Hope this helps [ Richard Mar 16, 2016 ]
How much watts you need depends on the speakers you plan on using. This amp is 75x4 rms. I'm no expert but usually the peak output is about double the rms. I have the gain set at about 1/2 for front and rear components that rate 50watts rms. it's way more than enough, but allows for future upgrades [ Nathan Dec 28, 2015 ]
I don't think so. [ JESSE Sep 24, 2014 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy Sep 16, 2014 ] Staff
I forwarded your question to an Advisor and they responded with the following: The amplifier has speaker level inputs, so you do not "need" an LOC. It can still help if you want to get the cleanest signal to your amplifier from the factory radio. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy Aug 06, 2014 ] Staff