Got your attention. Good!
But, instead of actually thinking about how right I am, you go off on the defensive and attack me. NO... I'm not bitter and twisted. I am pained seeing these young people WASTE their money, time, and energy doing things that they don't need to be doing!. You guys are musicians, artists, producers, engineers, etc., you don't need to waste your time doing something that you don't do. You should spend your time getting BETTER at what you love!
I guarantee you that the first 5 studios that you design will FAIL. Flop!
How many times did you skin up your knees and elbows learning to ride a bike?
How many airplanes have you designed?
This is physics. There is NO respectable space for DIY design.. there's PLENTY of space for DIY building! It is foolish to try to design something when you DON'T KNOW OR UNDERSTAND PHYSICS!
So, if you are happy with a shitty room with problems that will never go away, swing away. I guess it's like most psychiatric patients never get better and will always need a psychiatrist.
But it still hurts me to see you guys flailing away and doing everything wrong when there are good consultants and designers available to help. That's all I want to do. I do NOT encourage DIY design.
Here is how to deal with that space. Start with 9.5 feet (ceiling) and calculate the best ratio/room size the will meet Bonello and then Modal Distribution. Get my room mode calculators, see my videos, and download all the files from my resources page.
I am busier than a one-armed-paper-hanger! I am not trying to get business. But you do need to check out some reputable designers.
I feel like Gandalf here... "Bilbo Baggins! I AM NOT TRYING TO ROB YOU... I'm trying to help you."
Again, I'm not talking about perfect. There is no such thing. I'm talking about the best bang for you buck!
I am not belittling the amateur. I am trying to be a voice of reason and sanity in INSANE forums that promote the BULLSHIT idea that anyone can design their own studio. No, you can't. Go ahead and try, but don't waste my time complaining later.
Now as far as the original post. 7 meters by 5 meters by 2.5 meters is horrible... no matter what you do with it. It will be horrible! ok? Is that clear?
Make the room Length = 683 cm, Width = 491 cm, Height = 250 cm
Then it works. Then you need to hire someone to treat it. (don't fucking waste your time)
Cheers,
John