corner traps

Hello guys, I used to come to this forum like 3 years ago(don't remember my other account) but the thing is I learnt a lot of important stuff and for that I thank you guys.

Wow, I am new to this forum and never thought foam and panel traps could create so much "excitement".

Anyway - I am looking to treat a basement studio (15X40, app. 8 foot drywall ceilings) and feel that the foam corner absorbers offer the best bang for the buck in low frequency absorbtion.

Does anybody know how to construct a corner bass trap? :confused: Any design ideas would be great thanks...