Nearly all of them have more current output than you need. The drawback, however, is that PC power supplies require a certain but easy to do wiring connection in order to turn on. See my detailed diagram for that further below. How do you hook up a power supply to a car radio? Leave the power supply on in this case. In either case, when turned off the radio will go into a low-power mode draw less than 0.
Just like power wiring colors, not all brands follow these standard colors so always check first! Never connect 2 ohm speakers for example or wire speaker outputs together as the radio can become hot and permanently damaged.
The supply should start and your car radio should turn on. These are:. In my experience, the tape can come off later or the twisted wire may work its way loose at some point. Blue is one of the most common and works well with 18AWG wire. You can also pick up an affordable set that includes the crimp tool and connectors as well. We are about to junk our Toyota Avalon. We miss it already, especially the sound system with CD and audiocassette. Can we remove it all and wait until someone with more expertise than us can make a home music system with AC current?
However, you could alternatively get a decent brand name car stereo to run from AC-DC power, yes. Very nice. Hi, great article, thanks for putting this up. Helped me a lot when rigging up a car stereo to run some bookshelf speakers above my pc. Can you specify which section exactly seems to not be the same in order for me to check it? Found this article so helpful. Thanks Marty. Got a question though.. Is it possible to add a usb connector to a head unit? Say on a head unit of an nddn w58 car stereo?
Hi Lukas. Did you try the manufacture's web site? Anonymous Jan 6, 1, I just read thru this thread and one thing that puzzled me was no mention of reading the specs in the manuals that came with the units. Your AMP info will be listed there.
If having no manuals, you can find them online. Download them and save to your computer. Sep 13, Hunter hamilton. I have a Dual marine stereo. The manual has no info on watts or amps required.
Nothing even on the info plate on the stereo itself. It does however have a 10 amp fuse built into the unit at the back.
I only run the 2 speakers it came with, however I'm sure if I would use 2 more and the subwoofer the stereo can support the draw would go up significantly. I was kind of ticked off that there is no other info about the power draw. I just ran the wiring to the size of the 10 amp fuse. Dec 11, 1, catalina C27 stillwater. Look at the fuse on the unit. Divide by two and you will have a decent guess as to average to heavy draw.
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 Power used is dependent upon many variables, including quantity of speakers, impedance of speakers, music type, listening volume, and tone control settings. It also varies by brand. Team proposed backing up from power specs and that is an okay way except no radio puts out the power he mentions.
The power spec he used is PEAK power. Marketing number When Lightning Strikes. 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. Many electronics firms put a peak power number on their carton usually suggesting somewhere between 2 and 6 times real output.
It's not fair, but it's true that they do. 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.
Run the radio quiet and you will use less. Just know "sundowners" often cause radio current draws to go up. They also make you more popular and better looking but that's another topic All U Get. All U Get said:. How many amps or "sundowners" do you think it would take? I'll write it down for the other Mainers. To put science behind it and refute those bogus claims on the cartons of most radios, consider this. An electrical system in charging with a motor running will have upwards of 14 volts, but we are sailors right.
As ssg points out, the boombox requires significant current as well as voltage. The panels mentioned by hortense are only 40 mA. Working from ssg's assumption of 1. If the volume is low and the boombox is efficient you can probably get by with less current, but as ssg says, I would try to measure the current draw before designing something like this. Something like this panel might work. I would follow it with a simple voltage regulator circuit LM or similar to protect the boombox.
Another thing to consider is whether the boombox will start playing again on its own when power is restored e. This thread is closed to new comments.
0コメント