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I finished my basement in 2020 in originally used for my guitar room. It has a low 7 foot ceiling and a tiled floor. The room is about 15 x 15’.
At first I didn’t realize what the problem was but it has horrible acoustics being super echoey and boomy. It was impossible to record anything and I first I couldn’t figure out why am I recording sounded even more horrible than normal. Adding furniture such as soft couches certainly helped. An area rug on the floor also made a huge difference. I eventually bought some cheap acoustic foam on Amazon to put in the corners of the wall that i was facing. Everything I did made a big difference but the room was just way too small for the acoustics.
If your room is suitable you really just have to worry about temperature and humidity.