Truth be told, the rumble drivers sound more than bright enough, while staying musical rather than harsh, if you boost the treble (or hit the bright switch).I remember your journey with the 500 Combo that was broken and having to "disable it" in order to save it from the junk pile. Good for you and who needs a tweeter anyway?
Of course you can stay in The Club, macca! 
It really was all as advertised! I really put it through its paces with my loud country cover band, and it excelled beautifully! I even tried it with my Bassman 115 neo cab and it totally killed!!