@navyachts a thought just popped in my head…
When I had the Montis I ran them first with Rogue ST100 amplifier driven by RP1 and later by RP5 and then finally by Pass XP-12. Every one of these preamps had different capabilities in the lower registers. I then upgraded from ST100 to Pass XA30.8 for better synergy with the XP-12. The bass output was so prominent that I actually had to dial the bass down a notch or two on the back of the Montis bass cabinets.
I know the MLs have amplified bass modules but the amp’s or preamp’s sound signature comes thru even in the bass.
I also just recently had Coda CSiB V1 integrated which is the same amp as the No.8 you’re using in your system. This was with my Wilsons but let’s forget that for a second. The bass with Coda V1 is quiet different from pretty much any amp I owned before. It is fast, tuneful and articulate. Compared to Pass amps it’s definitely leaner. I believe it’s due to the amp design (no or low feedback).
It is possible that what you’re experiencing is related to the way your Coda amp presents the lower registers. I’m not familiar with what the Coda preamps sound like so I may be completely off track here. Add to this the fact that the ML panels are pretty power hungry and can take toll on the amplifier, it could be something worth exploring. Coda amps are high current and have capability to drive your speakers without issues, however, I would run this by Doug Dale and get his take on it. Doug can upgrade the V1 to V2 or V3 which would give you less Class A power but potentially more “slam” in the bass. Wild thought but I wouldn’t cross it off the list.
As a side note, I really liked the Coda integrated and liked its bass. But it’s all subjective. You may be craving more oomph and the V2 or V3 might fix that for you