8/15/2023 0 Comments Car amp![]() For casual listening, a good rule of thumb is to get one around 1/2 of the estimated max.I typically recommend getting a supply that’s at least 15 to 20% higher than the estimated max.However, DC power supplies can be finicky and may “trip” due to hitting an overcurrent limit before their advertised limit is reached. If you want to power the amplifier close to or at full power, you’ll want one rated for at least the maximum current draw estimate.Here are some basic guidelines for getting an AC-DC power supply for home car stereo use: ![]() ![]() Indoor listening is less power-hungry since the acoustics (in a mostly closed room, for example) tend to help retain sound which you can hear with lower power levels being ok. The truth is that when using car stereo system component at home you typically won’t need high power for casual or moderate music listening. That’s because a lot more power, in Watts, is needed due to the terrible acoustics, road noise, and other factors that must be overcome with more power in a vehicle. Additionally, using different impedance speakers affects the power use as well. My calculator uses these factors to help give you a slightly better estimate based on these factors that affect current draw as well as your particular use case.įor example, If you’re only using two channels out of 4 on a 4-channel amp, you won’t be using the same amount of power as if all 4 were in use.
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