[William Sommerwerck]

"Sean Conolly" wrote in message ...

"William Sommerwerck" wrote in message
...

These might do it: Alesis M1 Active 320 USB

These might be perfectly good speakers. But...
You're going to have a heck of a time getting 20W RMS [sic -- there's no
such thing as RMS power] out of them, as a USB interface can provide no
more than 500mA at 5V. And this 2.5W has to be divided between two
speakers!
Granted, most speakers can put out a listenable SPL with 100mW (or less).
But you're not going to be able to play them at high levels. At least the
expensive Vers speakers I mentioned have their own batteries.

I'm sure they have a power adapter. Don't be suprised if it's not mentioned
anywhere, I bought some tiny HP speakers for the spouse thinking that they
were USB powered, after reading every word online and on the box. They had
a wall wart in the box.

That's not surprising.

I looked at the Swee****er page, and it says ABSOLUTELY NOTHING about AC
operation. So I called and asked one of the technical experts. It turns out
the thing is AC powered. One of the photos shows the power jack on the back.