RD 1-12 RD50 speaker change

Hi,
Just got this MM amp, which is great, original MM 12in. speaker but a little bit "toppy" with my Tele, any suggestions? Change of speaker, maybe an extension cab. Thanks

I use a Fender ext. speaker (single 12") with my 65-112, and it sounds great. The Fender is a closed back box, while the MM is open back, so you get the best of both for a balanced sound...some extra thump from the Fender. You could probably pick one up for $100 or so, or just make your own if you're handy.