Help with Rig please

I am chasing a bigger sound!

I currently own a RM 50mts combo 1 x 12" design with 16 Ohm Celestion G12T-75

I feel the amp is plenty loud enough for gigs but I just want a bigger sound. I noticed that Randall sell a R11CBG 25 Watts RMS greenback 1x12 speaker cabinet. I don?t know a lot about wattages ect, so how would the 25 go with the 75 in my combo?

And will the extra speaker help me achieve my bigger sound?
Or do you guys/gals have any suggestions.
Thanks

there would be no problem connecting them BUT id probably suggest a 2x12 over a 1 if your looking for a bigger sound from an extention cab

Maybe you could just try a different speaker in the combo first?

V30 or a Tone Tubby Ceramic "12. Maybe a Eminence Wizard. Something with some oooomph. I never thought much of the 75, kinda has narrow honk, not good low end.

My Eminence GB12 is a Greenback copy with much improved low end. I love that speaker. It's 50 watts.