Is it required to run a third R750 controller mode (not providing Wifi)

[mburke911]

Hello,

We have a small office that has purchased 3 R750 APs.  We want to run them unleashed but I don't want to have to turn dedicated controller mode on one of them.  The docs say when you have 3 or more APs (specifically the R750 and R850) one of them must become the master and be in dedicated controller mode.  Is this actually true?  Can you run 3 or say 4 without a dedicated controller?

Thank you,