Celestine G12 Greenback has a 20W rating. The Marshall studio series combos have Celestion V types. They are 70W. A V30 is 60W. Origin 50c uses Celestion G12N-60 Midnight. Is that this one? https://celestion.com/product/221/midnight_60/ Anyway I'd like something with G12 Greenback response but at 50W in a 1 x 12. What would you use?