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hello i need YOUR guru's help !!

testing my room with a mic + 31 bands RTA/EQ i saw what in the display the problem i supposed to be by hearing it by myself !!

doing some measurements with pink noise at the mixing chair and behind from the cough placed near the wall i saw there's a strong peak at 40hz, more than other frequencies. another less strong at 125-160hz range.

i have in use many traps built with "readybags", everyone assembled into a plywood fame with 2x5cm rockwool panels; 120x60cm, 50kg/m3 density.

2 traps for every corner (one above another)
2 traps onto every side wall
2 traps on the rear wall
7 traps distributed all over the ceiling

room's dimensions are:
L 4.05 mt
W 3.75 mt
H 2.70 mt

calculating the modal resonance from the MHSOFT web site it results the nesty fundamentals freqs are 43 46 64....

WHAT i could do to improve the bass response ??

i thought i used too many panels but it seems i have too many peaks at 40 and 120-160 considering the huge traps i using !!!

if needed i can upload some pics of room walls and RTA display !

thanks in advance to all slutz that will try to help me !!

1st November 2008	#1
blackfinder Gear maniac Joined: Jul 2006 Posts: 190 Thread Starter	40hz problem !! hello i need YOUR guru's help !! testing my room with a mic + 31 bands RTA/EQ i saw what in the display the problem i supposed to be by hearing it by myself !! doing some measurements with pink noise at the mixing chair and behind from the cough placed near the wall i saw there's a strong peak at 40hz, more than other frequencies. another less strong at 125-160hz range. i have in use many traps built with "readybags", everyone assembled into a plywood fame with 2x5cm rockwool panels; 120x60cm, 50kg/m3 density. 2 traps for every corner (one above another) 2 traps onto every side wall 2 traps on the rear wall 7 traps distributed all over the ceiling room's dimensions are: L 4.05 mt W 3.75 mt H 2.70 mt calculating the modal resonance from the MHSOFT web site it results the nesty fundamentals freqs are 43 46 64.... WHAT i could do to improve the bass response ?? i thought i used too many panels but it seems i have too many peaks at 40 and 120-160 considering the huge traps i using !!! if needed i can upload some pics of room walls and RTA display ! thanks in advance to all slutz that will try to help me !!