Alpine’s PDX-M12 on the other hand has a regulated power supply and will consistently put out 1200 watts RMS whether you have a 2 ohm, 3 ohm or 4 ohm load. The JL Audio JX 1000/1D puts out 1000 watts RMS at 2 ohms, but only 500 watts RMS at 4 ohms. For a 1000 watt RMS mono amplifier, consider the JL Audio JX 1000/1D. It’s a great compact little amplifier that is very efficient and reliable. If you need something slightly more powerful, like in the 600 watt range, I recommend the JL Audio XD 600/1 v2. It’s slightly smaller so it’s easier to dismantle and mount in a stealth manner than Alpine’s RUX-KNOB. If you are also installing the optional bass knob, JL Audio’s RBC-1 is slightly easier and cleaner to install. Either amp is a great choice when you need a 500 watt mono car amplifier. In our shop we sell both the JL Audio JX 500/1D and the Alpine MRV-M500. In the mono amp category, the more popular amps are in the 500 watt power handling range. Here is the key for that simple rating system: Power vs Size vs Sound Quality vs Budgetįor this post, I’ve included a basic $ rating system in the amplifier comparison charts to give you an idea of cost against power, overall size and sound quality. Simply put, it is an approximation of continuous average power. For reference, RMS stands for Root Mean Square. So pay close attention to those RMS ratings when shopping for an amplifier. When you run a car amplifier below the specified impedance capability, you risk both sound quality and damage to your amp. Anything less than 2 ohms is typically too little resistance for an amplifier to handle effectively. For subwoofers, you want your final impedance to stay in the range of 2 to 4 ohms. 5 or 1 ohms.įor interior speaker amplifiers, generally speaking, you’re always going to be running the amp at 4 ohms. Oftentimes it’s only when you look at the owner’s manual do you find these ratings are listed at an unrealistic impedance such as. Some less than stellar car amplifier companies out there will advertise an unrealistic power handling rating just to grab your attention. Make it a point to look at an amplifier’s RMS power rating and see at what impedance or ohms it is rated at. Number of Watts X Number Channels RMS Number of ohms at 14.4 volts.Note, all of the amplifiers I recommend follow CEA-2006 Compliance regarding RMS rating guidelines: I’ve also listed physical dimensions for your reference as well. They’re also rather efficient and come in a compact size. You will see they have relatively low total harmonic distortion level, typically less than or equal to 1%. When shopping for the best car amplifier, it is important to pay attention to the following specifications:Īll the amplifiers I recommend here are excellent quality.
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