I use them in active filter with a cutoff frequency of 250Hz on an amplifier Interm M1000 (2x500W).
They are properly serious, even if the frequency is in dscente can limit.
Finally we must not ask too much for Lower Medium.
On my HP MODELS are the brand Eminence and finisher is not too bad.
Finally, the only complaints that could be found there is that there are no roulette and the connection is changed (JACK). For my part I rgl this problem by adding four small wheels on the rear panel and changing the bowl with a Speakon connector.
Finally, it is a very good model at a price still remaining affordable.