Hello

re: "...Most towers that I have seen and or tested have two or three subs to every one mid and or tweeter."

These speakers don't have "subs", they are just simple woofers!
Keep in mind that some of the finest loudspeakers available anywhere are simple two driver / two way designs. The 80’s are probably fine, but multiple drivers are not necessarily an indication of exceptional sound quality.
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Keep that impedence switch at the 8 ohm setting.

Those who have long enjoyed such privileges as we enjoy forget in time that men died to win them.