2 * sqrt(14 * (1/2)^2) = 3.75" not 9"
Not sure where that 9" midrange area came from, but whoever came up with that is bad at math.
Used to have 90db/watt speakers being driven by a 50 watt Sugden with a lot of headroom. Those speakers had dual-8" woofers and my room was similar to Miller's but lower ceilings 7.5-8'. Never had any issue "shaking the walls" or reaching listening levels beyond what most would enjoy.
Not sure where that 9" midrange area came from, but whoever came up with that is bad at math.
Used to have 90db/watt speakers being driven by a 50 watt Sugden with a lot of headroom. Those speakers had dual-8" woofers and my room was similar to Miller's but lower ceilings 7.5-8'. Never had any issue "shaking the walls" or reaching listening levels beyond what most would enjoy.