Home theater design help


Recently I discovered that a wall I did not I think I could move is actually removeable and thus I can more than double my current home theater room into a much larger home theater/ media/ entertainment space. I engaged what dealers remain in my area but none seemed all that interesed or capable of managing design and construction changes especially since I have most of the equipment already. Anyone have any ideas on how to pursue this?  I roughly know what I want but also know there’s likely a lot I don’t know around design, sound tailoring, decorating, acoustics etc.   kind of at an impasse currently. Thanks! 
esthlos13
The best advice I can give is to read Premium Home Theater by Earl Geddes. It’s by far the best book I’ve read on room construction and acoustics because it explains theory in an approachable way and then covers in detail how to construct a room and even what materials are best to use. Even if you're hiring someone to design and build a room for you, I'd highly recommend reading this book so you have a working knowledge of what they're proposing.  I’m not handy at all, but if I had the time I think even I could build a great sounding room using only this book, so any contractor should have no problem. No expert design needed. Here’s the link, and best of luck...

https://www.amazon.com/Premium-Home-Theater-Design-Construction/dp/B0041SUL2E

I'm currently on my third home theater room, having moved twice and been at this for about 17 years.  The one piece of advice I can give you anecdotally is that oddly shaped rooms tend to sound better.  My current room is L-shaped, and seems to have magically resolved the acoustical issues that my former rectangular box-rooms created.  This with very little acoustic treatment, just one 2'x4' absorptive side wall panel and a panel behind.  The installer confirmed that has been his experience too - the non-box shape solves a lot of problems.
Agreed.  Another thing to avoid is rooms that are nearly square shaped.  You really do not want a perfectly square room.  If you cannot do an "L" shaped room, make sure the room is longer than it is wide.  In other words, home theater works better if you put the screen and front speakers on the small wall.