Car Amplifier Power Cable Calculator

Step 5 connect the power wire.

Car amplifier power cable calculator.

Ploss 10 log 1 2 rl 2 rl vline squared prated rl rref 1000 d. With our wattage chart below the choice has never been easier. The car audio help dvd catalog includes five different videos covering many areas of car audio installation and custom fabrication. This is telling you the rms power or more correctly the continuous power with a 8 ohm load and a different continuous power with a 4 ohm load.

In your case if you connect a pair of 8 ohms speakers the maximum power from the amplifier is 700 watts. When using only one battery refer to the primary. Attach the power cable to the positive battery terminal not directly to the battery post itself. Equation used to calculate the data.

The ratings of your subwoofers have no bearing at all on what size power and ground wire for your amplifier to use. Make sure the main power cable is thick enough that it can handle the total current draw of all the amplifiers. Check out our amplifier wiring diagram to see how the wiring gets connected in a typical 2 amp system. Choosing which battery to use to power your audio system can be daunting when faced with all sorts of numbers and specifications that don t seem to have anything to do with car audio at all.

Topics range from basic system installation head units amplifiers speakers etc and mobile security car alarms and remote start to subwoofer box design and fiberglass fabrication. Our amp wire calculator helps optimize your amplifier s power output by recommending properly sized awg wires. Ground cables should be the same size or larger as the power cable. Your two 12 subwoofers are wired together to present a total impedance of 4 ohms with a total power rating of 600 watts rms.

Using your current speaker and power wire current amp power is calculated allowing you to see any potential losses in watts with undersized cables. 4 gauge will work fine for that amp. This calculator provides line loss with 2 conductor cable on a constant voltage line. Hifi audiophile power cable 125v 15a hi end braided sleeve amplifier power cord audio ac power wire with us connector plug 3 3ft 1m 4 2 out of 5 stars 10 28 88 28.

This calculator for amplifier power voltage and current has little significance but is rather interesting. Current draw figures are based on rms power of the amplifier with a 50 efficiency rating. If you connect a pair of 4 ohms speakers the maximum power is 1300 watts. In the specifications for an amplifier it might say something like this.

Although wire gauge sizes smaller than 10 gauge may be acceptable for the amount of current draw we recommend using 10 gauge as the smallest wire size for any amplifier of 100.