Complex sentence: The next speaker in the 604 line to be released was the 604B, with a slightly higher power handling at 30 watts and a better frequency response ranging from 30 Hz to 16 kHz.
Split into simpler sentences: The next speaker in the 604 line to be released was the 604B. This had a slightly higher power handling at 30 watts and a better frequency response ranging from 30 Hz to 16 kHz.