Whenever you buy a speaker wire, follow the above guidelines. For an 8 ohm speaker under 50 feet run, 16 gauge speaker wire fits perfectly.For 4 ohm or lower speakers, 12 or 14 gauge speaker wire is the best option.So, here is a table that can be very useful. Your choice should depend on the distance of the speaker wire. Speaker wires range from 12 gauge to 18 gauge. The wire you choose should be able to handle 283.86 amps. So, the 2000-watt amp draws 283.86 amps from its source. Total Amps without considering the efficiency = 2000/13.8 = 144.93 amp So, if we consider our 2000W amp and assume the amp is Class AB, In other words, the current is equal to power divided by voltage. The amperage value is equal to, the number of watts divided by the voltage. To calculate the amperage of the amp, you’ll need the Total RMS Wattage. You might think, do I need to calculate the Total RMS Wattage.
Tip: At this point of the article, you might get confused. However, the wire you choose should be able to handle 4000W, given that the amp is Class AB. That means the amp produces 4000W, and 2000W gets lost because of the heat. However, the wire you choose should be able to handle 2666.67W, given that the amp is Class D. That means the amp produces 2666.67W and 666.67W lost due to heat. Keep in mind: These percentages of efficiency might change according to the different types of amplifiers. So, to find the total RMS Wattage follow these calculations. Class D has 75% efficiency, and Class AB has 50%. The main difference between Class D and Class AB is efficiency. But, do you know what kind of amplifier to buy? There are two types of amps in the market Class D and Class AB. You already know, for this article, we are going with a 2000-watt amp.
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