The sound was as if a veil was lifted..........just kidding.
It did seem to raise the apparent height of the imaging.
This is my take on it:
I kept the original stands on my 1.7, then I added the vertical supports of the...
Here is something from car audio that may offer a solution for you. This is not an endorsement of this particular device, just a representative. It would be nice to know if it attenuates or alters the signal in any way, which of course would be undesirable...
As Blumlein 88 said, there are subs out there with high level inputs that will accept the signals from your speaker cables. It is the best solution if you have no preamp outputs.