yeah I took the good working tweeter and moved it to the speaker in question and it didn't work there so that told me the crossover is bad on that one to
took the suspected dead tweeter and put it on the working speaker and it still didn't work, so that tweeter is def. bad
moved good tweeter back to good speaker and it works fine.
tweeter is an easy swap, but the crossover is a bit of a pain.
Geez blindsay, what a stoke of bad luck.
I can tell you, from experience, that the resistor on the XO board that protects the tweeter has blown and "may" be the only damage to the crossover. Unfortunately, whatever occurred got your tweeter too. Odd that it took both...
If Polk can't help you out under warranty (they may just ship you out a new XO and tweeter, no questions asked), the resistor isn't hard to replace if you are handy with a soldering iron and a pair of snips. I can help you through the process. Definitely give Polk CS a shot first as, I too, have always had very good luck with them. At one time, "Club Polk" members received a discount on replacement parts as well as free expedited shipping. So, if you're not already a member, you might wanna join.
Contrary to a comment that was made earlier, Polk didn't use "sub-par" components in the XO (and it is well thought out), but I will say that they didn't use components that would bring out the best that the LSi "can" offer. The components used are "average", but I guess sacrifices were made somewhere to meet a certain price point. To me, I'd rather have higher quality components in the XO than a nice "piano gloss" enclosure, but that's getting off track.
The resistor Polk chose is, IMO, under spec'd for the Vifa tweeter that's used. It not only burns out unnecessarily quickly, but also somewhat restrains the performance of the Vifa.
As I showed you in your initial thread, I had to rebuild the XOs in my former LSi-9s. Here's a link to a vastly superior Mills resistor that I chose to use.
www.parts-express.com/pe/showdetl.cfm?partnumber=005-3If you choose to upgrade to a better resistor, you'll need to do both XOs....
Here's also a link to the Vifa XT25 tweeter Polk used. They will tell you that their version is "modified", but unless the mounting plate counts (which can be removed and transferred), I have my doubts.
www.parts-express.com/pe/showdetl.cfm?partnumber=264-1016Hope this helps.....