Chief bonehead

You got some right and some wrong. I never said that the oil filled caps never needed replacing. We used to get networks in and replace them with caps that kept the original intent. Make sure that you understand that point. That is why JEM is Klipsch approved. All others....you are on your own. There are very few on here that can actually do measurements to get back to original intent because the loudspeaker is a closed system. Change one compnent and you have to check if it’s still original intent. Pwk was puzzled why someone would change a component on his speakers after it was engineered a certain way. And I agree with him. my question to the op was genuine. He talked about how good they sounded and then mentioned that everything was going to be replaced except for the cabinet. there are many here that espouse modifications and even call them upgrades. I don’t agree. If you don’t know what the original intent is, then how is that so? There are a few people on here that actually want to know what they have done and measure. Those I respect. May not agree but respect. And those are the threads I like to read. Anyway, my comments on this are simple, replacing a component or components does not guarantee the Klipsch original intent. do what you want with your speaker. But it’s not a Klipsch intent speaker anymore.

Gee...feelings vs facts....importance?

Yeah....bonehead jail....

As usual....well you know the rest.

I suggest the yamahasho model 1’s....

Is there a maintenance schedule of speakers?

Ummm no. What model do you want to call it?

Then you tell me?

You obviously don’t understand the difference between production of sound and reproduction of sound......

You been paying attention?

Your understanding is wrong. But it’s your speaker. do what you want. Just don’t call it a la scala anymore.......

You like the way the la scala sounds and then you are going to change it into a totally different speaker that’s is not a la scala. Sure......Makes sense

Ferrite cores??? LOL!!

One more time.....you HAVE to look at the network as a system. It provides a voltage transfer curve to the drivers in order to maintain the original frequency response curve. Changing a component of the system requires that the voltage transfer curve be checked. If it has changed then the original intent of the frequency response curve has changed and would require that the value of other components , including the cap be changed in order to get the original voltage transfer curve. Changing caps arbitrarily without checking the voltage curve is like equalization. Of course some caps are better for audio signals but once the choice is made For the cap and other components and the network is designed around those components that give the desired voltage transfer curve, changing one of those at random will NOT guarantee that you have the correct voltage curve.

99db sensitivity is for mid band.

JEM Performance 5 Posted December 28, 2020 Jim from JEM Performance Audio. Seems like I need to offer some information about what I do and why I do it with regards to Klipsch Heritage speakers. The capacitors I sell are approved by Klipsch engineering. I met personally with Roy Delgado over a year ago and discussed Klipsch crossovers in depth. Roy took the time to explain the differences in capacitor design and how they react in a network. My desire was to keep the vintage Klipsch models operating as PWK designed them to sound. This all came about because I had changed the caps in my Klipschorns to the most recommended and advertised capacitors in Klipsch land. My Klipschorns were not the same after I changed the caps for sure - but not in a good way. What changed? First the bass was peaked out, the tweeter was way too bright and the midrange had no life to it. It no longer sounded like a Klipschorn should; the realism was gone. I brought this to Roy's attention and he immediately smiled and proceeded to explain what was happening. You have to use the correct type of capacitor to maintain the specs of the network as designed by Klipsch. I know there are those out there that will disagree about this but I can tell you that once I installed the caps Roy recommended, the Klipschorns became totally balanced, the bass was smooth and the midrange open and detailed. I knew others would appreciate having their Klipsch speakers performing as they should, and together Roy and I put together the authorized network repair center. I only repair Klipsch speakers to factory specifications using authorized factory approved parts. Your speakers remain a genuine Klipsch product and will perform just as PWK intended. No modifications, no BULLS**T. So you are probably wondering why should I believe this guy and how does he know what a Klipsch speaker should sound like? Some background - I have used Klipsch speakers since the 1970s professionally and personally. I experienced the Klipsch industrial series products in live sound reinforcement. I used Klipsch speakers exclusively in both of my professional recording studios. I personally own Klipschorns, LaScalas, Cornwalls, Heresy Is, IIs, and industrial Heresy stage monitors. So you see I do know what a Klipsch speaker should sound like. We have Roy to thank for getting the correct parts available to keep our vintage pieces of audio history alive and well. I don't have much time to respond to questions via this forum but I can be reached during normal business hours at theaudioroom@verizon.net or by phone - 412-401-6915.

If distortion limits are the same.....the second amp

Happy new year Randy!

Happy New Years Zen and Dave!

You guys still don’t get it. It’s about the WHOLE network and voltage transfer curves.......

Not for diy projects. You must have a valid serial number if you have a speaker that needs parts.

It’s pretty simple and it’s not very complicated. It’s just not “Roy” endorsing JEM, it Klipsch. And for the umpteen time, crites and alk or anyone else and the products they sell, are not Klipsch approved. Most people who modify a part on their network have no idea how it might affect the overall voltage transfer, which affects the spectral balance of the speaker. But it’s your speaker....do what you want. If you want the original intent, then replace with original specified parts.

Dcr of the woofer matters and therefore so does nominal impedance

It’s pretty simple and it’s not very complicated. It’s just not “Roy” endorsing JEM, it Klipsch. And for the umpteen time, crites and alk or anyone else and the products they sell, are not Klipsch approved. Most people who modify a part on their network have no idea how it might affect the overall voltage transfer, which affects the spectral balance of the speaker. But it’s your speaker....do what you want. If you want the original intent, then replace with original specified parts.

All wrong. The 79 has a tighter gap. Therefore higher sensitivity