This is a car audio amplifier circuit that has high power over than 50w Using the IC TDA1562Q Philips. The impedance issue is a real one for headphones, but the distortion issue immediately gets into the even harmonic distortion of tube amps versus odd order harmonics prevalent in solid-state designs – this is the stuff of religious wars. If you’re looking to power your subwoofer for a relatively low cost, Pioneer GM-D8601 Class D Mno Amplifier is the way to go. At just over 100 dollars, you’re getting a good bang for the buck and power. With over 2000 watts max power, you’re able to get 1,100-watt amps RMS at 2 ohms, and 600-watt amps at 4 ohms RMS.
In the 20+ years that I have been in this business, I can count on 1 hand the number of speakers that have been blown because of too much power. Three cell battery packs giving about 4.5 volts are recommended for most transformerless audio amplifiers driving small 8 ohm speakers. At the sole discretion of Car Audio Bargain (CAB) your subwoofer, or amplifier will be either repaired or replaced. There’s one last little thing that can put a hamper on full power charging is using a dodgy or cheap cable.
So connect the 12v, ground and REM wires to your amp and it should be good to turn on. Don’t connect it to your subwoofer right away though. When you work on your car be sure to take safety precautions, starting from disconnecting the battery taking everything out that can catch fire up to having a fire extinguisher ready. The formula for figuring out how many amps….and therefore the size rating of your cps is this… watts divided by volts = amps. The supply voltage required for this project is 8 -18V DC, at least 1 to 2 Amps.
If you want to design a 500W power inverter of a 12V DC input the recommended power mosfet you can use is irf1404 or irf3205 or irf1302 because thy have a low input voltage and a high amps. However the subs will require 300 watts which is expensive impedance will be 6 ohms, and one channel.
Running a total of 4 output channels, its rated power ranges from 250-watt amps at 4-ohms, 600-watt amps at 2-ohms, and 750-watt amps at 1-ohm (though multiple users have reported an RMS at 1-ohm of around 900, which is impressive). This question leads me to wonder why the power cable in your car for an additional amplifier is so huge (like 4-8awg). Since the voltage potential is higher at the alternator end, which is BEHIND the capacitor, the accessories have a more stable voltage and current supply than the amplifiers do as the capacitor is slowly charging. Using the unfused side of a multimeter to short a circuit which could potentially deliver over 20 amps is a bad idea. This is the kind of amplifier you use if you’re looking to run BIG power to your subs.