Doggitter, you may be able to devise a stand to accommodate your needs, but at 6-8" of over hang, your going to have more than half (the heavier half)of the speaker hanging off.
Look, I'm not trying to ruffle any feathers here and I can only speak from my own experience, but my room is a tad bit bigger than yours. I don't even have a fireplace to work with. I have an entertainment center and my limitations are that my speakers can't be more than 13" tall and they have to sit in enclosed shelves of about 2' wide and 18" deep. I feel your pain.
Now back to not ruffling feathers. Don't get me wrong. The 685s are nice speakers and can sound very good; however, they are more of a speaker that need to be accommodated rather than being accommodating. If you can't set them up at least close to right, they can get bright and the mid range can leave a lot to be desired. The sound stage can have you tearing your hair out looking for a compromise that you can live with. I just don't think that they are good speakers for a guy that has space limitations.
Just based on my experience over the last few years and trying a bunch of different speakers, I'd look for something with a nice silk dome tweeter that isn't sensitive to placement.
During your research reading reviews and such, pay attention when the reviewer goes over what he had to do to get the speakers sounding good. Also pay attention to the quality of the music shifting at different heights (sounding different when you're standing up as opposed to sitting down) and pay attention to the amplification used. Some speakers need a powerful amp to sound good.
Since you can get speakers up to 39 or so inches tall, I really can't make any recommendations. All of my experience recently has been with really small speakers.
Good luck.
Look, I'm not trying to ruffle any feathers here and I can only speak from my own experience, but my room is a tad bit bigger than yours. I don't even have a fireplace to work with. I have an entertainment center and my limitations are that my speakers can't be more than 13" tall and they have to sit in enclosed shelves of about 2' wide and 18" deep. I feel your pain.
Now back to not ruffling feathers. Don't get me wrong. The 685s are nice speakers and can sound very good; however, they are more of a speaker that need to be accommodated rather than being accommodating. If you can't set them up at least close to right, they can get bright and the mid range can leave a lot to be desired. The sound stage can have you tearing your hair out looking for a compromise that you can live with. I just don't think that they are good speakers for a guy that has space limitations.
Just based on my experience over the last few years and trying a bunch of different speakers, I'd look for something with a nice silk dome tweeter that isn't sensitive to placement.
During your research reading reviews and such, pay attention when the reviewer goes over what he had to do to get the speakers sounding good. Also pay attention to the quality of the music shifting at different heights (sounding different when you're standing up as opposed to sitting down) and pay attention to the amplification used. Some speakers need a powerful amp to sound good.
Since you can get speakers up to 39 or so inches tall, I really can't make any recommendations. All of my experience recently has been with really small speakers.
Good luck.

