First of all I want to thank everyone who have helped give me tips and advice with this project. My plan for my Home Theater is to soundrpoof it but in the end have it pay homage to the Seaquest DSV submarine as I loved that show growing up. However before I start with anything I would like to give you all a plan for my room and I want blunt honesty if it's going to really make that big of a difference or not when it comes to Soundproofing(i'm getting the doubting bug)
2 outside walls: 2" xps foamular rigid board glues to the concrete wall. Stud wall 24" oc in front of that but 1" away from xps. Double 5/8" drywall with Green glue.
2 interior walls: Staggered stud formation, Double 5/8" drywall with Greenglue, batt insulation between studs, again not touching the ceiling.
Ceiling: Double 5/8" drywall with Greenglue, furring channels and sound clips, batt insulation, each layer of ceiling and wall have small cracks at their connection points to fill with acoustic sealant.
Joist cavities: 2" xps foam board properly sealed, batt insulation.
All necessary cracks and things will be acoustically sealed with acoustic sealant.
There will be 2 doors; 1 at the bottom of the stairs to enter the theater and the 2nd on the middle interior wall to enter the adjoining room of the basement(laundry room)
There are also 2 glass block windows in the theatre room with only 3/4" cavities. My thought was to seal the vent in the windows with that acoustic puddy and place 5/8" drywall in the cavity sealed with acoustic caulk. (still not sold on if that is the best to do here)
There will be 6 backer boxes for my can lights which I am currently cutting and screwing together(they will be soundproofed per soundproofing company's website)
All outlets and switches with be properly sealed with puddy.
I have 2 return vents running parallel with the ceiling joists and come down flush with them. I plan to wrap them in MLV and use the acoustic sealant in any gaps.
There are 2 vents in the theater room which blow air in the room. I plan again wrapping those in MLV and using a Flex Duct or Duct liner for them as well.
I think that's covered almost everything. I need to know if this setup will really make a difference in my home. Will I notice a big increase in sound proof when it's all said and done(from the inside of the house and the outside) And please don't be shy, let me know if i'm doing something wrong or if there's something better i could be doing with ANY of this.
Thank you for your time.
Here are some pictures: