A while ago there was some discussion of CLRs being "boomy." I have a pair of wedges and never thought I noticed it. But, on some presets I started noticing a pronounced low end at or around the low G. It didn't happen with every amp model, though, so I ruled out the CLRs. Also, just lowering the Bass control in the amp block didn't help. After some investigation, I suspected the LF Resonance setting in the amp block. This setting is used to emulate the interaction between the amp and physical speaker cab and the user must manually match it (if the default is not sufficient and the user is using a real guitar cab). But, in one post Cliff stated that it is not desirable to match the LF Resonance to FRFR speakers when using IRs.
So, I'm not sure if the CLR has a resonant frequency around 100Hz (the default for the amps I was having the issue with and close the frequency of a low G) or if it would be the same for any FRFR, but lowering the LF Resonance (0 or a little above) took away the big 100Hz hump. It appears this is mainly an issue on amps with Hi Cut instead of Presence and is why I only noticed on some amp models. I found some things mentioned in the that say the LF Resonance is much more pronounced in amps with no negative feedback.
I was worried about it drastically changing the amps character, but lowering the LF Resonance didn't seem to make a difference in the amps tone/feel.
So, I'm not sure if the CLR has a resonant frequency around 100Hz (the default for the amps I was having the issue with and close the frequency of a low G) or if it would be the same for any FRFR, but lowering the LF Resonance (0 or a little above) took away the big 100Hz hump. It appears this is mainly an issue on amps with Hi Cut instead of Presence and is why I only noticed on some amp models. I found some things mentioned in the that say the LF Resonance is much more pronounced in amps with no negative feedback.
I was worried about it drastically changing the amps character, but lowering the LF Resonance didn't seem to make a difference in the amps tone/feel.