Roy Boy

Do the midrange diaphrams on a compression driver like I have on my recently acquired Chorus II have a life expectancy? How do I know when/if the diaphram should be replaced? I did replace my tweeters with Dave A's Large MAHLs lens and DE10 tweeter combo and love them. I will be recapping the crossover as well. Thanks

I knew there were a lot of passionate inmates here in Kipschworld...Thanks for the insights. I do have a nice pair of dual 15 inch power subs (Seaton Submersive HP) that I will integrate using a DBX PA2 drive rack once I get a handle on optimizing the setup.

While a long time audio guy, I just acquired my first Klipschs, a pair of Chorus IIs. I have been curious about high efficiency speakers and horns but did not want to spend huge $. My local dealer who has become very into the vintage audio movement played a pair of unmodified Forte II with a Sansui AU717 and it sounded great. I had two amps available to drive the Chorus IIs, a pair of Tube Research Labs Samson monos (300 watt/ch solid state) and a pair of Viva Aurora SET monos (845/211 tubes). In my short two days of listening I have been mightily impressed and want to see about potential mods to improve the performance. I have been looking at the various forums on Klipsch mods and found many suggestions. I want to take a methodical approach and only do on mod at a time so I can evaluate each change. I am interested in prioritizing the list in order of highest improvement first. What I have found in the forums in no particular order is: 1) Swap out K-79 tweeter module with Crites titanium module 2) Swap out K-61 midrange module for Klipsch titanium module 3) damp outside of mid horn with dynamat 4) damp woofer with doughnuts of F-11 Acoustical Felt (1/4 inch thick) 5) Add 2.5 ounces of mass via two large washers glued to back of 15 inch passive 6) damp spider of passive with dynamat 7)damp/reinforce spider of 15 inch woofer with dynamat or plumbers epoxy 😎 reduce cabinet vibrations with either bracing/straping or dynamat on walls of inside cabinet 9) Deploy ping pong balls/acoustical felt in mouth of mid horn and 30ppi foam in throat of horn 10) Replace crossover with Crites or ALK crossover. 11) Raise up speakers on stands. I look forward to hearing from those who have the experience of having deployed these mods and your opinions. Thanks in advance.