Ear height and 800 Diamonds

[meltemi]

Using the spikes, you can tilt them forward, so that your ears are on a straight line with the tweeters (might look slightly puzzling but sounds excellent).
The spikes (delivered with the 800 Diamonds) allow to lift the speakers about 4cm at the back.
The Cerabase will cost extra money and allow you to lift the speakers at the back by only 1cm, which depending on your environment may not be enough.