Can these speakers be powered by a portable usb power supply? for use without a computer just a phone and portable charger?
1256479
sorry, can't answer as I don't have them anymore. They stopped working properly after 2 months. just fyi.
1256480
The info on their web site is unclear. The only examples given involve a PC USB port. Try emailing them your question.
2135272
Ye you need an amp, they are not powered speakers. They are passive speakers as indicated by the "P" in "B2030P" which means you need an amp to power them.
854431
the speakers charge through USB so you don't remove the batteries to charge the device. Hope this helps! =D
1119341
No. These are passive speakers - you can't plug anything directly into them.
167461
Great question! The speakers get their electrical power via your device's USB port! No wall socket adapter needed.
614289
There is NO voltage going to these speakers. They are not powered and they need an amplifier to operate.
676678
They can be used as both computer and bookshelf speakers. I use them for my computer. Yes, they can be hooked up directly to a computer. The power source and audio cable are included. They can also be hooked up to a receiver too. In short, these are pretty awesome speakers. Extraordinary sound quality, especially for the price.
1207091
You will need some kind of power amp to drive these. Although small they are just a standard speaker as opposed to a powered speaker. Have a look at the Topping digital amps. I think they are great.
654344
These speakers are not self powered nor a complete sound system, so this question is not really appropriate for asking on a set of speakers that requires other components. (The only input ports in the back are speaker wire inputs.) If you are designing your own system, where you plan to connect external devices and even run things on a battery without an AC connection, yes, these things are possible. I am actually doing these things with my system. These are 4 Ohm, speakers, so imagine that if you connect these speakers to a car stereo, the requirement list that you have, is really meant for the particular car stereo unit. So, with this example, the car stereo would have a USB port, 3.5mm audio jack for MP3 player input, and it may even run off of a battery. If you are just looking for a complete sound system that is ready to go, this is not it.
587564
These speakers have a built in amplifier. There is no need for an external one.
16210
Wow, so many wrong answers!! These are passive speakers. They don't plug into a wall receptacle; they must be powered by an amp.
646
you can use computer speakers. But you need a power source for the speakers and will have to turn them on and off as with a computer.
892638
I'm fairly certain that you can achieve this. I have Logitech Z5 speakers which are also USB powered, and I have used a USB charger to power them while the device (like an ipod) plays thru the audio cable.
903087
Yes they can all be used to power devices without a computer but the amount of power each port has is very low compared to what a device would get from its own ac adapter.
477560
It's usb "powered" so no brick power supply. Yes, you would plug it into your line out or headphone jack if you don't have a line out. These are meant for a desktop not a laptop. They also sound cheap...you can get a gear head set for 5 bucks and get the same cheap sound. Can't expect much for speakers being powerd by 3mA.
2084023
In short, I would say no. If you feel like removing all USB functionality - then technically yes. (cut the speaker lines and place into the amp outs). I suspect the low output over your current system is a combo of low power from the USB powered amp (it's technically only capable of 2.5w output) - and cheap speakers. So If I'm going to be truthfully honest - by another powered speaker PC set. For utilizing this amp you'd want to purchase new speakers as well.
1811108
No, these are not self-powered speakers. They need some sort of amplification.