8 ohm nominal impedance/4.69 ohm minimal impedance--is this a bad load (on paper)?

On paper, a 4 ohm load is reasonable. BUT it all depends on your amp. The amp must be able to deliver sufficient current when the 4 ohm load is hit. I’ve seen name brand receivers shut down and poorly designed tube amps, with insufficient output transformers, severely clip under a 4 ohm load. So check your amp’s specs before you buy the Revel M126Be or any speaker.

+1erik. The minimal drop of 4.7 ohms is not unusual for a 8ohm nominal speaker. 

Phase angle is another spec to consider (aside from impedance) as the combo can make or break an amp.

Stereophile seems to measure both in the reviews I've read.

DeKay

@immatthewj, everything you need to know about speaker impedance see here. 😎

Mike

Impedance varies greatly when driving speakers. So for the Revel dropping to 4.69 ohms is really no big deal. It’s when a speaker drops below 2 ohms you might have a problem.  Both my Hegel and my PS Audio amps have no trouble handling 2 ohm loads.