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Just know "sundowners" often cause radio current draws to go up. Run the radio quiet and you will use less. In summary, and to repeat, for a worst-case load in order to budget total electrical draw, consider the fuse supplied with the radio you intend to use, and budget roughly half the fuse value for your probable average current draw. It's not fair, but it's true that they do. Many electronics firms put a peak power number on their carton usually suggesting somewhere between 2 and 6 times real output. The real sinusoidal RMS power a 12v head unit can provide is only about 12 watts x 4, all speaker channels driven at 4-ohms. Team118 proposed backing up from power specs and that is an okay way except no radio puts out the power he mentions. Power used is dependent upon many variables, including quantity of speakers, impedance of speakers, music type, listening volume, and tone control settings. Typical use for one of us, an "amp-and-change" as Stu points out, up to sometimes 5 amps if you are ashore getting supplies and you leave the teenagers on the boat. Divide by two and you will have a decent guess as to average to heavy draw. I suppose its expecting a bit too much from the sunday stereo installers to be supplied with the handbook with the answers to all the top secret information so early in their career they gave me a tech support number for pioneer. Sometimes it better to just tell the truth and say "I dont know" rather than trying to blow a smoke screen to hide your ignorance of the subject:cry.īut then I called best buy and got a somewhat better answer. I didnt let either "answer" go without a colorful comment, because as much as I dont know what the correct answer is, or about car/boat stereos, I am absolutely certain I knew more than they did and that that neither employee was really qualified to be installing stereos. The other store told me, after he asked me what it was in, "well we dont do sailboats here, we only install in cars and sometimes boats with motors, so no one here knows". one store told me that, "its around 15 to 18 amps". I called two different stereo stores this morning to get an answer from them. I cant seem to find a decent answer on the power consumption for my stereo.ĭoes anyone know what the approximate power draw on something like this would be? a basic marine version of a car stereo/ipod player.
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