I purchased this for a GA-5 build (8 ohms) and knew the ceramic unit would fit the small cabinet. I updated the GA-5 significantly with premium components and wanted a real quality speaker like this Jupiter. Already owning Jupiters (alnicos and ceramic units) for other Tweed and Blackface guitar amp builds I had no hesitation purchasing this speaker.
The fit and finish of the speaker is beautiful, and it sounds absolutely fantastic with the Gibson circuit. I replaced a Weber Signature ceramic with the Jupiter as I felt I could elevate the performance of the amp and was not disappointed!
I am working on a Vibro Champ now and will be purchasing another 8 inch Jupiter.

Running this speaker in my GA-5 custom build. Handles the power easily from this amp. Lots of well-defined clarity lows, mids and highs!

I replaced the stock Mojotone speaker in a 2000s era Gibson GA-5 “Les Paul Junior” 5 watt model. I added the speaker break in to give it a workout before it shipped. This speaker is a big improvement, with much more bass and a balanced sound that suits lower output or driven settings. It’s my first Jupiter purchase and I’m thrilled with it. Well done!

I needed a small practice amp and a friend gave me his old solid state Bronco. It wasn't as bad as I thought it would be, but I figured since it was free, I would drop a couple bucks on it and see if there is an improvement. Amazing improvement! It's still a SS Bronco, but it is very much smoothed out. Useable bass, clear mids and highs that no longer range from cheap and dull to cheap and cringy. OD channel and pedals sound much more full and natural. If it can do this for a SS Bronco I'm sure it would be beautiful on a nice little tube amp.

I replaced the 6" speaker in my Fender Champion 600 and it made huge improvement in sound, even with Fuzz and distortion. The clean sounds great too