What is the application and who will be running the
system? Will there be any
system processing such as limiters?
What is appropriate depends on the application and is generally a matter of balancing output,
headroom and potential damage to the speakers to best fit the needs of the particular application. Thus a
portable, multi-purpose
system may be approached differently than an installed
system with a more limited range of usage. And an experienced operator may be better able to take advantage of any additional potential in the
system without significantly increasing the risk of damaging the speakers.
Since you specifically asked about
Yamaha amps, any of the
Yamaha P series amps should work with one
speaker per
channel. If it is a situation where the
system could be used for a wide variety of events and venues and might be operated by less experienced operators, a
Yamaha P3500S would probably be a pretty good fit.