Re: Celestion Vintage 30 vs Greenback vs G12-T75
The G12T75 isn't so great in a 4x12, IMHO. It's thin and brittle, by comparison to the others, with harsher highs. It might work okay with alot of processing, due to it's crispness and lack midrange complexity?
In a 2x12 it works a little better, because in a 4x12, you have less midrange compared to a 2x12, due to phase cancellation things that happen inside of a 4x12 cab.
The GB is the classic 4x12 speaker, and it has an aggressive attack without harshness. It's great for bluesy sting and sing lead work due to it's attack, with a fullness in the tone as the notes sustian, and it gives a nice crunch without brittleness for power chords.
I've gone through the speaker experimentation thing a few times and I always come back to the Vintage 30. It's simply the best overall, IMHO. It's the warmest and thickest of those listed by my experiance. It's so smooth behind an overdriven tube amp. The lows remain tight and you can get just enough high end sparkle in a band situation. I've never understood reports of it pushing harsh highs. I don't have that problem. With a strat you can get nice tight Hendrixy rythimic chops. It works behind classic amps and works behind high gain amps too.
It seems that combining the V30 with other speakers, particularly the G12H30, really works great.