This page does not review anything Warwick Acoustics makes. It counts one thing: how much of what this database says about their products came out of their own documents, and how much had to be worked out or left blank.
Impedance is almost always printed. Sensitivity is the one that goes wrong, because a decibel figure means two very different things depending on whether it is per milliwatt or per volt — about five decibels apart at 300 Ω and eighteen at 16 Ω. The conversion is here.
Warwick Acoustics prints no frequency range for any of both models here whose sheets have been read.
No measurement is published here — only what was printed. The whole count, maker by maker, is in the frequency response audit.