Room Treatment Help

if this is a man cave and you’re willing to do some DIY. Get two cases of 703 Owens Corning rigid fiberglass panels. I was able to get mine from a local insulation distributor. Fir Stripping for frame and colored burlap fabric. Some mounting hardware off of Amazon. Truly, a difficulty scale of one on a DIY project. Do some basic research on where to place. I would look at doing both 4 inch and 2 inch panels. It’s important that the fabric use select you can breathe through it. That is why burlap is suggested because of its ability to breathe.You may need to do some fine-tuning here and there, but you were going to have to start here in the first place so, square one it is. 

https://thraudio.com/diy-acoustic-panels/

GIK, just email them 

You can contact Norman Varney at AVRoomservice. 
much better than trial and error and wild guessing. 
With him you are in professional hands - and ears 😀 

For the multitude of individuals with an interest in Audio, All decisions made come with a element of unknowing, hence trialling is the most valuable approach, as the experiencing is everything to assist with making a fair evaluation.

No one has to be pay to acquire experience, making time is the key to the door.

Spending is easy and for many the simplistic method adopted to avoid acquiring new experiences, especially ones that can prove to be valuable and indelible.

" Act in haste repent at leisure " is the way to part with ones coffers and make another more satisfied with their side of the arrangement.

The OP is well informed of how they can learn more about what is occurring in their listening space, be it there own endeavours or pay to get given a data produced by a visiting service that might mean very little to them.