Building a sound-proof wall!

[Jazzcrisis]

You can't just do one wall really, to be effective at sound*proofing*, you're gonna have to basically build a whole room within a room, isolated from every surface of the original room, more or less, especially if your main concern is the bass, because it travels through almost everything with ease.

[Syncamorea]

The 10x10 footprint doesn't help in terms of room modes. Since you have height, plan on using it to your advantage. By that, I mean use it to help solve the main problems the room is bound to have in the bass to midbass range (due to the 10x10 footprint).

Since space is limited, if it was my room I'd try to start off with a few of these:

Tim's Limp Mass Bass Absorbers

Measure the room then take your best shot at building a range of depths and MLV mass/square feet specs. You are going to want some broadband absorbing panels for the mirror points, a well thought out cloud, etc.