Went to the local dealer for Polk here (not Best Buy but a local store) and I was shocked to find he didn't even carry the latest speakers from Polk. I listened to the RTI 6 which the owner said was essentially the same as the RTI A3. I also listened to the LSI 9 which he claims is superior to the latest LSIM line. He said the new tweeter in the LSIM is not as good as the one in the LSI which he said was a "vifa". He said Polk is now making their own tweeter but it is not as smooth at the "vifa" tweeter in the older model.
At this point I don't know what to think. I liked the sound of both speakers but it was clear the LSI 9 had a more refined sound and was pretty close to what I am looking for. But I am very skeptical about buying either speaker since both are likely to be at least ten years old since it appears they were released around the turn of the century and were then replaced by the RTIA series and LSIM's within the last few years.
Since this is my first time listening to Polk speakers and I don't have any kind of benchmark listening test to work with when comparing to the new models, I would like to hear what others have to say about this. Should I spend some time at Best Buy and listen to the newer models? At least they carry the RTIA line.
I should add that the LSI line are 4 ohm speakers and they will likely pose a problem with that little tube amp which runs at 8 ohms. If it were fully solid state or perhaps a lot more wattage I don't think there would be an issue. But since two friends of mine that have decades of experience with electronics heartily discourage me from using a 4 ohm speaker with this amp, I just can't see buying the LSI model.