NO
Can however be powered by a 120/ to 12 volt DC power supply plugged into wall socket. (Ensure the power supply has sufficient current rating to run the subwoofer)
Nope. Unless you wanna burn up your speaker.
Can the magic jet be plugged in the electrical outlet without the internet.
It'll only deliver 1/4 of the power.
The fuse is what restricts how much current you can draw from an outlet. If you have the wrong fuse you can draw more power than intended from an outlet - but only if the appliance plugged in can use it up. To get too much power out of an outlet, with a suitable appliance plugged in, then you also have to have a higher voltage in the outlet. And for that to happen, something has to be seriously wrong higher upp in the supply chain.
Your transformer inside your powerpack that is still plugged up will continue to get hot whether your computer is plugged up or not. You jsut run a risk of it burning up therefore losing your powerchord.
The Eureka-Boss-SmartVac 4870GZ is only run by plugging it into an outlet. It does not have a battery.
Yes, a 110 volt device can be plugged into a 125 volt receptacle. The voltage rating on the receptacle is only there as the highest voltage supply that the manufacturer recommends their equipment be connected to.
A unidirectional current controller device is a type of electrical on/off switch. In order for an item to work that is plugged into a particular outlet, the switch must be in the on position. It is like having lamps plugged into outlets that are controlled by only one switch.
Usually, radios have a slot at the back or bottom where you can insert batteries (Often AA). If it does not have a slot, and isn't solar powered or anything, then contact the radio manufacturer, who will tell you how to use batteries. If the radio has to be plugged into a socket outlet and has no slots for any batteries, then the only way you can use batteries to supply it with power is to use an electronic power inverter unit. Several types are available. The most common can use a 12 volt battery and has a socket outlet into which you can plug the radio.
No, a preamp is not always necessary for subwoofer sound. You will, however, always need some form of "crossover" to ensure that you only send bass frequencies to your subwoofer.
only if your trying to sell it
For the best possible sound, a subwoofer is recommended. This is most important for games, movies, and music. If you only need to hear sound effects and audio cues, small speakers with no subwoofer are sufficient.