Recently bought this 2045 cab which came with grey backed G12hs dated 1974. My interest in buying was for just for the cab. I sold the speakers on to a friend of mine (along with my restored 2045 cab) and replaced them with a pair of recently acquired 1973 dated G12S Celestions with pulsonic cones. I have to say this is a fantastic pairing. The G12S is a surprisingly ballsy speaker. Plenty of bottom end with a smooth mid and high frequency response. Perfect for lower volume playing.