I'm guessing the tube amp driving the Silverline speakers is the culprit for looser than desired (underdamped?) bass in this case?
Assuming this is the case, something like a Wyred4Sound Class D integrated or something similar from Bel Canto or other vendors of Icepower Class D integrated amps might address the issue.
The BC icepower monoblocks I am using have delivered the tightest yet most powerful yet nuanced bass ever on my Dynaudio monitors, which may be somewhat similar to the Silverlines.
Assuming this is the case, something like a Wyred4Sound Class D integrated or something similar from Bel Canto or other vendors of Icepower Class D integrated amps might address the issue.
The BC icepower monoblocks I am using have delivered the tightest yet most powerful yet nuanced bass ever on my Dynaudio monitors, which may be somewhat similar to the Silverlines.