Thanks for the good responses. I'm going to reply to everyone in this post.
Originally Posted by andrebrito
Second is better but way far from anything professional.. if this is for rehearsals I understand you want lots of rooms and don't worry much about sound quality
My advise would be to create more asymmetrical spaces
Do you have any suggestions. I'm a complete novice at this.
Originally Posted by arquen
Have you calculated the size of these rooms based on any acoustical requirements?
Not really. The sizes were essentially based on what we can cram into a 2000 sqft building. The room dimensions in the first drawing were based on Sepmeyer ratios that I found in a book I purchased called "Home Recording Studio: Build It Like the Pros".
The expectation is that we would have to isolate up to 110dB of sound for a standard band consisting of drums, guitar, and bass. I found that dB level from various sources; it's nothing we've actually measured ourselves.
It seems like everyone thus far is preferring the second drawing to the first. So my followup question is would it be possible to treat the rooms enough, being that they're so close together, to help dampen the low tones. I have a concern about low tones transferring over to the next door neighbor and between other rooms.