Outdoor speakers, 100V or constant impedance?

L

laurentiu93

Audiophyte
Hi guys! I have a set of KEF Ventura 5T for my coffee shop outdoor terrace, and I need to buy one more pair. At the moment, the inside of the coffee shop has 10 ceiling speakers connected to a 100V PA system. I am running the the outside speakers on the same single zone amplifier, which is a total mess, because I cannot control the inside and outside volumes separately. I need to buy a separate amplifier for the outdoor speakers, or a two zone PA amplifier.

The outdoor speakers can either run on 100V line, or on constant 6 ohm impedance. What would be more desirable regarding sound quality? Should I switch to constant impedance, or should I go with 100V PA? Wiring is more complicated, and wire lengths can go to 20m for a speaker. Is it worth the fuss for better sound quality? We are not hosting parties, it's mostly background music with higher volumes in evenings. KEF advertises 60Hz - 20kHz (±6dB) frequency response, but I don't know how valid they are for 100V lines.
 

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