Since all the suggestions keep going back to what I've already stated I don't wish to do. This thread may as well stop. I cannot state any more clearly that I do not need to change the EQ or add/replace an amp or cabinet. I have my reasons for wanting to control the volume of one cabinet (not EQ it). Just because the one I want to lower in volume has mainly lows, does not make it an EQ issue. But, people can't seem to get off that. So, let's call it a day. I understand people are trying to help and if that was what I was after they would be great suggestions. So, thank you for trying.
I really appreciate the couple of people who offered suggestions relating to the question I asked in my first post, how to adjust the volume on one cabinet only. The post with the link was especially helpful and has me moving in that direction, thanks! And ironically is the least expensive solution to all of those made.
Let's call this thread dead.