acerikk

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....

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??

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......