Bass in my room isn't good? Help

Hi,
I just measured the bass in my room by using the Radio Shack'sound Level Meter (analog)and Stereophile Test 1 (track 20 to 31). All I got for the bass requencies aren't looking smooth, and here is the result
1Kz = 78.5db
200Hz= 78
160Hz= 71.5
125Hz= 78.5
100Hz= 76
80Hz = 76
63Hz = 71
50Hz = 71
40Hz = 79
31.5Hz= 75
By looking at the result, I can see the problem happens at 160,63, and 50Hz. However, when I bought the Buster bass trap, they told me that thier bass trap can control down to 40Hz. My JMlab mini monitor can goes down to 57Hz, so I have to use a JMlab sub which can goes down to 30Hz, and my Classe ssp25 has the cross over requency of 80Hz. Does anybody have any solutions for this problem? I have only 2 Echo bass trap (6'tall), do I need more?
Thank you very much
DT
Ps: I set the meter C weighting, Slow, Range 80. Vollum on my pre-amp was -20db, and the meter was on my seat as same height of my ear when I sit.