How close to a croner would they be used? I wouldn't really recommend either of these speakers for corner use. As mentioned, the ATC SCM7 would be a better speaker to use in a corner, but they require a little more driving than a 6003 will comfortably deal with. I'd suggest an Audiolab 8200A amplifier. If you can't stretch to one, have a look around for an older 8000A, which normally go for around £150. It won't sound quite as good, but it will have the added advantage of subtle tone controls, should the corner positioning cause too many issues. This saving will also allow you to look at alternative speakers like Spendor's S3/5r2's, which are also a sealed cabinet - unfortunately they're very similar to the ATC's as far as needing to be driven well, but at least they're a viable alternative as far as quality is concerned. They're effectively a modern day LS3/5a monitor.