I've been doing some testing, and when I sweep from 50-30 hz, my peak is ~36. However my loudest frequency on a burp ranges from 42-47 depending upon box positioning. The box is tuned to 38 hz.
Are the speakers unloading due to the low frequency, hence the lower score on burps but not on a low volume sweep?
bought from: cbrrocketrdr, bk12321, galacticmonkey, jnoel, aaronmiiller, revrider1, QtrHorse, brchd, Calikid, IA2, miker, dontknowanythin, Towncar, woofercooker, speedyg76, cd6551
traded with: lorilee8284, Boominator
sold to:ravens9322, Blinkdogo2, dbubble, Fusion_FREAK, oneill584, jrgreene1968