Have done some more reading on the subject of bass traps and came across DIY tube traps. The tubes are apparently available here and are not expensive at all. Anybody with any experience of these traps? The tubes that are available here come in different sizes, wall thickness of 5cm or 10cm, diameter of 10cm, 12,5cm, 16cm and 20cm, all the tubes are 120cm tall. They would be easy to place in the corners and could also be placed in a row along my rear wall behind my sofa. The question being are these effective at all?
Here are some of the links I have been looking at:
the tubes diy 1 diy 2 info