Do these need to be powered?
574980
No. No power needed. Just hook up the speaker wire to your receiver and you are good to go.
574981
Yes if you mean powered by a radio or receiver just run the speaker wires to radio or receiver and they work real good
1420347
Unfortunately they DO need to be plugged in all the time in order to be used. For outdoor use you will need a portable power source. I recommend Paul C Buff's Vagabond Mini Lithium portable power. It's light weight, easy to carry and it costs less than $250.
860428
No, these are in-wall switches that need to be hard-wired to your electrical circuit and are powered by 120V mains.
759084
They are 12v and will need a battery........... They sell a 110ac to 12v converters to use in a standard outlet
1335886
Hello John. The speakers have a standard, stereo, micro-plug. Yes they need to be plugged into household current and are equipped with the necessary power converter.
1985860
A power source to run these? Of course not. These run off of Fairy Dust, and luckily they are pre-loaded with a lifetime supply so the lights never turn off. Who needs electricity to run lights?
946347
you can operate them manually or yes you will need a power source & switch if u want to power up
804798
No they must have an outlet to plug into. Sound is great for a computer or smaller area, not meant for a bigger space.
1585458
Yes. They are turned on by supplying a ground to the pin so no controller is required.
1645890
On all your questions there is one answer: YES (including if they need to be powered up for chain)
493191
yes, these lights need to be plugged in, you have 2 different light intensities, overall I'm pleased with the product.
1142324
These speakers are not self powered. You will need an amp of some kind to power them. They are good speakers for the price. I like mine.
907069
Yes, the cameras need power. The battery connection is merely for testing purposes and will only provide power up to 15 minutes.
693979
They require DC voltage. They are rated for 12V. They come pre-wired for connection to an AC/DC converter. I wired them to a 9V battery and they work fine.
130658
No...they need to be plugged into the receiver. And the receiver to the amp via either red/white or optical.
2264820
I don't believe so. The device needs to be powered at all times. Like any electrical device, the black and white wires need to be connected to the device. It's also important that the power black is connected to the proper device black wire. I don't have the instructions in front of me so I'm going by memory.
1753464
No. They only provide power. The other ports do provide power as well though.