Hi,
I am using a pair of BeoLab 2500 speakers connected to my Avant 32 RF DVD. I bought them together with my Overture, but they are now used as front speakers in such a surround set-up with the Overture masterlinked to the Avant. Even if you cant find 2500 in the speaker type menu in the Avant, they work when you select Beolab 4000 as fronts. I didnt know that the 2500 themselves need to "know" they are a part of a Dolby Digital set-up. Though, you can increase the volume of each specific speaker in the speaker level menu of the Avant. Mine are set to +1.
I recognize that the 2500 may be a little bit weaker than the Avant internal/front speaker in the lower frequencies. Maybe 4000 will match better as front speakers? However, I feel that my "sound picture" fits ok to the Avants "picture picture". Also the 2500 need to be placed close to a wall.
In my dreams Im thinking of buying a pair of 4000 as front and then put the 2500 as rear. As the 2500 do not have any selector of right and left speaker like other power link speakers as "they alreaddy know their position" by their design. Hence I have alwas been thinking that I need a powerlink cable that is crossed in a way in order to put the left rear sound in the originally right hand 2500 (and opposite).