Ideas on the Usher AC-20?

Never buy any component, especially speakers, simply because the price is "good". The wanted ads on Audiogon are replete with examples of that mistake.

The best price in the world is irrelevant if you don't like the sound. Speakers are very personal and subjective. Give these speakers a serious evaluation with YOUR amplifier otherwise the audition isn't worth much.

I'd venture a guess that your English is better than anybody's Swedish who is participating here.

Correction:
The "For Sale" ads not "Wanted" ads.

Sorry.

Ok, well thanks for those words..I intend to listen to them, but he who sells them live far from me, so if someone know something about their soundcharacter I would appreciate it. Thx

Even if the AC-20's were not so far from you, they are older speakers and they will not be available for audition with your amplifier through dealers. When you buy used here at Audiogon, you normally won't get to audition the gear in your room with your equipment. In the case of the AC-20's the best you could hope for is the ability to listen to the speakers in the seller's home or the home of someone you know that owns them. You take a risk buying used, so buy well known items with a good following, at a good price, so you can resell them here at little loss if you don't ultimately like them. That's my advice. Audofeil is bit off base here with his take that you should audition these speakers with your amplifier. In the ideal world that is absolutely true. In this case, that's unrealistic unless there are a special set of circumstances. The exception would be if the speakers in question were a new or recent model still available for audition through dealers. Then you could have the speakers in your room or take your amp to the dealer if they were local. In the case of older models, an audition is generally not going to happen unless you have a friend with those speakers and they're willing to let you set them up in your listening room on your gear to help you make a decision. A scenario like that is unlikely. And sellers here are not going to give you a speaker audition on your amp.

have you read this review of the ac-10? it might give some idea on the ac-20.
http://www.usheraudio.com/news/Stereo%20Times__%20ac-10.htm