The Chemex resembles a cross between a standard drip cone brewer and a chemistry set, but a few relatively minor differences set its brew profile apart from drip cone in a few notable ways.  The very thick filter results in a much slower brew process, with the filter already resisting the passage of water more than a conventional one, its porous and textured surface captures fines from your brew mass to further slow the process.  Meanwhile, the smooth-sided cone, an anomaly in drip brewers, means that water has a far harder time exiting the filter laterally and is instead forced to exit through the brew mass out the very large "hole" at the bottom of the cone.  The end result is a very flavourful coffee with very little body and a lot of clarity. 

I'll be posting a guide to this space soon, so keep an eye out.