Bass Traps


I recently acquired some bass traps, four GIK Sound Blocks and two GIK 244 Panels with FlexRange.  The Sound Blocks are on the front wall and the 244s are on the back wall.  (There is not adequate room for the Sound Block on the back wall, hence their location.)  Now I seem to have more bass than before.  I had to reduce the level on my two Rel S/812s by one click and am contemplating another click.  Anyone know why I have more bass with the traps than without? 

mjjw

Get those traps into the corners. As others have pointed out, you have shifted the response of the room now. It would help you to run REW and dial in your room using the graphical results.

I made a run once with REW moving the traps inside the front speakers (out of the corners) and it was as if I had not trapped at all. Moving them back into the corners restored the improved room response.

wait are you doing this blind without measurements? @mjjw 

This video is timely - Acoustic Treatment: The Strategy for Small Studios

Yes it is for studios but the general comments are very much what you need to get familiar with. But for the love of all things good, get a calibrated mic. This should do - miniDSP UMIK-2 - USB Reference Measurement Microphone

 

Also, please talk to GIK. Room treatment is a science and should be treated so.

Bass traps are called that because they absorb some low frequency waves compared to thinner panels but below 80hz, not that much. So they are absorbing everything above including mids and highs. That makes the bass sound more prominent and even. Many people have their subs turned up too high to compensate for uneven levels and when you smooth it out, you hear more. 

You would probably benefit from having diffusion on the front wall behind the speakers. And follow the suggestions to use REW and look at some of GIKs videos.