[Changing Tweeter Impedance in RB-35]

Thanks again to everyone who's chimed in.  Attached a photo of the faulty tweeter.  Speakers purchased new in '04 or '05.  I installed a pair of K137s and it's certainly a huge improvement over the single bad K130.  Are the RB-35s working at the best of their potential??  I don't know.  But it ain't bad.  And it's a huge improvement.  And nothing seems to be overheating....

[Changing Tweeter Impedance in RB-35]

Thanks for checking in.  Called Klipsch.  Fella there said the 8ohm K137 is the drop-in replacement, regardless of the fact that it's replacing a 3ohm K130....although he was unwilling to put it in writing.  So I've installed replacements and hoping for the best.  Still don't see how the impedance on the whole RB-35 unit stays within spec.  But the output transformers on the power amp aren't getting hot....so I guess it's good??

[Changing Tweeter Impedance in RB-35]

Hi...

 

Just started using my old pair of RB-35s again after they'd been in the closet for a few years.  One sounds as I'd remembered.  The other is dull...lifeless.  After ruling out the tube amp's output, I swapped tweeters.  And that's the problem.  One bad tweeter.

 

The stock tweeter is stamped 3Ω K-130-DN.  Poking around on the web I'm not able to locate an exact replacement.  What I have found is a K137 rated at 8Ω.  (Btw I've sent an inquiry to Klipsch about a replacement tweeter but have not heard back.)

 

Since the impedance is different, I have to presume that the K137 isn't a drop-in replacement in spite of what the web stores that sell them say.  And I know very little about the math behind speaker loads.  So my questions are......

 

- If I simply replace the 3Ω tweeter with the 8Ω unit, how does that impact the RB-35's impedance?

- If direct replacement throws the RB-35's impedance too far off the original overall 8Ω rating, would there be something that can be done elsewhere to maintain the original impedance??  Perhaps via the crossover??

- If somehow direct replacement is mathematically fine, how might the different impedance affect the sound??

 

Thanks all......