jjjason1This is a very hard speaker to drive, especially around 70hz, low bass where big current will be needed, and also from 100hz to 200hz. 88db is not overly inefficient though.
Stereophile tested measurments:
The minimum magnitude is 2.44 ohms at 135Hz. However, there is also a combination of 4.44 ohms and a capacitive phase angle of –58° at 72Hz, a frequency where music can have considerable energy; this will place a significant demand for current on the partnering amplifier.
https://www.stereophile.com/images/416WiSabfig1.jpg
So an amp at >100w into 8ohms will suffice. But that 100w should double into 4ohm give almost 200w and again into 2ohm almost 400w, this means it gives good current.
I suggest BJT amps, (not tube, Clas-D, or Mosfet), like John Curl’s Halo JC1 monos or the Gryphon Diablo 300 or 100 integrated, Krells etc etc.
Cheers George