Live sound reinforcement?

I will using Ardour primarily for live sound reinforcement. Does it matter what sampling rate and latency setting I use even though I will not be capturing or playing back any tracks in Ardour? Just live mixing via 4-6 tracks of live instrruments/vocals.

You will want to use as low latency as possible. Other than that and 24 bit, with a decent sample rate(At least 44.1), no it doesn’t matter.