The best room upgrade: $2250


I live in hot as hell Sunny South Florida. My house is open beam ceiling (no attic). Upstairs without air conditioning on is 95* +!

I finally got around to getting the roof Siliconed to knock down the heat and UVs= lower electric bill. What I didn't know was the impact it would make, quieting my listening/TV room. For the first time in 25 years, no traffic noise from nearby I-95 and I-595!!! And when I turned on the TV the sound was relaxed, not echoing in the room. I haven't yet put the stereo on, but will later today
Glad I did this before my Voyager amp arrives- any day now. I need to get a handle on how this changes the sound before I put in the system
tweak1
Using certain types of insulation; silicon, spray foam, cellulose, etc., helps tremendously in reducing sound travel. Glad you are able to enjoy your TV and music better now. The long term benefits for heat reduction and sound mitigation  are really worth it.
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spray foam



Spray foam has a great R-value, but I would only  recommend it in conjunction with good ventilation. I see vaulted ceilings filled up to the roof decking with spray foam and condensation ruins the roof decking.