Re: 10" Replacement speaker for Vox Practice amp
I recently set up a 2 x 10 cab with Celestion 10" Greenbacks. They are inefficient but they sound great, very full. If you want good Brit tone, the GBs would be great, but they will probably make the amp sound a little less powerful ... which can be a good thing, it would allow you to turn the amp up more.
I have a Laney VC15 that came with a Jensen, which sounded loud and harsh. I replaced that with an old Celestion G10-50 and lost a little volume but gained a far better tone.
Of course you could go old school and fit a Celestion G10-Gold, the Alnico 10". I also have a pair of them in a 2 x 10 cab, and they are noticeably more efficient that the Greenbacks. Noticeably more expensive, too, but worth it. The Greenies sound great out of the box, the Alnicos sound good but i suspect need some break-in time to really give up the good stuff.