I have a roland cube 15x and i was wondering if you could replace the speaker withing the amp witha celestion G12H vintage speaker.My speakers havent been able to maintain the gain i demand and the clean channel a bit to rusty for my liking.

Thanks guys.
It would not be worth it to swap out the speakers on that. It's a practice amp, it doesn't need to sound killer.

If you can't get the gain you want, maybe consider selling it and replacing it with a practice amp more suitable for your needs.
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I have a Celestion Vintage in my Fender Supersonic Tube amp......

I don't think it's worth putting that type of speaker into a practice amp like the Roland
"Escape is never the safest path"

Fender 50's Strat
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I would suggest just getting a different amp.
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