This really should be Bass Player Acoustics 101 along with the basics of cabinet coupling effect and Fletcher Munson Effect. People you need to know this stuff.
OK good question @Bizorballs. First lets look at decoupling. Yes, you loose bottom end, but not all of it and not all at once. Lets raise your combo or cabinet up on a milk crate or two. As long as you don't go much over two feet, you're not loosing much at all, and nothing EQ couldn't handle.
On a boomy hollow floor or stage, you most definitely want to decouple to get rid of the boom. You can't do it effectively with EQ, you must decouple. Not only that you should use an isolation pad/platform such as an Auralex GRAMMA. Another new product is the Mud Stand if you have a combo. For a belt & suspenders solution put your Mud Stand on top of an Auralex GRAMMA. The GRAMMA gives your amp a new acoustically neutral 'floor' on which to recouple without any bottom loss and no boom. To my ear it also helps to tighten up the bottom, so I use one all the time.
Try this -> Take your amp outside and set it on good old Mother Earth. Play. Now put it on a GRAMMA. Play. What difference if any do you hear? Now put your amp on a hollow stage in a large room with hard reflective walls; and floor. Play. Now use a GRAMMA. Play. Now fill hall with happy shiny people. You & band play. Write down all scientific acoustic observations and report back with substantial findings. Draft and post new 'Rumble Talk'.
Thx for the quick reply Linnin. I’ve always been technical-luster (used to build my own Theil tuned cabs from the good Doctor’s nomagrams). The dynamics of audio are always interesting SO the addition of uncoupling the cabinet raised a new flag for me. New technology and cab design obviously create new parameters that deserve attention and thinking revision. I’m in. Thx again.
