I just went to check my single V30 I bought to put in my single 12" Hughes and Kettner 20th anniversery edition .
I remember how "shocked" I was when I opened the box to find
a very tiny white sticker ON the side of the magnet with assembled
in CHina . Talk about sticker shock =/ . I had no idea celestion would
do that . I will tell you that when the sticker is taken off you cannot tell
where it was made , I would guess the serial number would be the only way . The celestion sticker on the back sure does say Ipswich , England
but in no way does it say Made in U/K or china " any longer ".
It's hard for me to tell much about the sound as it takes a while for a speaker to " break in " , then I would have to A/B them in the same cab .
It is the same for my G12M that I bought , it also had the tiny china sticker on the side of the plastic " greenback " it is still there . My reissue G12Hs the 30 watt greenback with the 55hz cones came in boxes saying made in U/k or England . To open the 4X12 sealed cab to look is more than I will go through . I always wondered what the Jimi Hendrix 4x12C greenbacks on the marshall reissue, I would think C= China . Despite marshalls claim they are the exact replica of the 1960s version he used .
I am sure the response would be , exact replica assembled elsewhere ?
I hope that helps some .