"...to tame room modes", not "nodes". Please refer, with accuracy next time, to my entry.
FYI: https://en.wikipedia.org/wiki/Room_modes
"...equalization is part of the necessary treatment of room modes in bass. There is no escape from that, but even there, something that should be simple is sometimes compromised." Chapter 8 in the 3rd edition Toole, F. E. (2015). “The Measurement and Calibration of Sound Reproducing Systems”, J. Audio Eng. Soc., vol. 63, pp.512-541.

