I am almost certain those speakers are bi-ampable. If you are getting deep enough bass response from the speakers, getting a first rate SS power amp to drive the bass might do the job.
A used Chord or Krell power amp would definitely do the job. You could also look at a Class D. The Classe Sigma Amp 2 can be had at a sharp price. I sold one not long ago for about $1200. PS Audio Stellars would work here.
If an amp is described as bright or analytic it is brilliant for this application and lots of power to control that bass driver. You won’t hear the brightness under 500hz.
A used Chord or Krell power amp would definitely do the job. You could also look at a Class D. The Classe Sigma Amp 2 can be had at a sharp price. I sold one not long ago for about $1200. PS Audio Stellars would work here.
If an amp is described as bright or analytic it is brilliant for this application and lots of power to control that bass driver. You won’t hear the brightness under 500hz.