Unsurpassed in a 4x12 for cranking out towering, huge power chords, the Heritage Series G12H (30W, 55Hz) featuring the bass cone is famous for thick syrupy tones, with a deep growling back end, densely complex mid-range and a finely detailed top end.
Since the beginning of rock, Celestion built speakers for lead guitar and for bass. In the early days, the only difference was the resonance frequency of the cone that was used. Bass speakers used the “bass cone” with a resonance frequency of 55 cycles/second (or Hz). This gave a distinctive sound that was a little heftier than the “lead cone” speakers, but was still appealing to the lead players, any of whom adopted it: particularly for live playing.