Well, you should figure out some way to angle the speakers up if you're going to use books, as it looks to me like they're still way too low (remember, you want your tweeters pointed at your ears). They will certainly be better than nothing. Cinder blocks can also work well (not concrete, just cinder blocks, as concrete rings a bit). One of my friends has his ProAc Studio 100's on cinder blocks in his studio.
You can also look for DIY speaker stand guides. Some sand-filled PVC pipe sandwiched with wood works fine. Whatever you use, make sure it absorbs vibrations well. If you tap your stands, you want it to sound very dead without any ringing (or in more technical terms, an extremely quick decay).
As I said earlier, Audioengine's DS1 or DS2 stands would probably work very well for these speakers, but if you have some extra cash, the IsoAcoustics stands are a perfect match.
CEntrance themselves have recommended not having a reflective surface right underneath the speakers (such as putting them flat on a desk, where the desk is the reflective surface), so whatever stands you put them on, make sure that you can put the speakers at the very edge of them.
You can also look for DIY speaker stand guides. Some sand-filled PVC pipe sandwiched with wood works fine. Whatever you use, make sure it absorbs vibrations well. If you tap your stands, you want it to sound very dead without any ringing (or in more technical terms, an extremely quick decay).
As I said earlier, Audioengine's DS1 or DS2 stands would probably work very well for these speakers, but if you have some extra cash, the IsoAcoustics stands are a perfect match.
CEntrance themselves have recommended not having a reflective surface right underneath the speakers (such as putting them flat on a desk, where the desk is the reflective surface), so whatever stands you put them on, make sure that you can put the speakers at the very edge of them.