Hey @Triple7Music! Thanks for your insights, you’re totally right, I already gave up on the idea of using the LENRDs at least until I see how the DIY approach turns out. As mentioned above, the plan right now is to build 40x40x240cm (floor to ceiling) 4’’ rockwool traps held on wooden frames and fabric on 4 corners. I don’t expect to achieve a mint sounding studio but if I see some improvement, I’ll consider myself happy.
Just to be clear: the room is already treated with 2 large (120cmx200cm) 4’’ rockwool panels (wooden frame and fabric covered) slightly angled on the ceiling, the same set in the back wall and 5cm Sonex diffusors on the side walls and behind the monitors, but leaving the corners and angles untreated was deffo a bad idea.
Thanks again for chiming in!