boom3

Terry is the only person in driving distance (of me) I'd trust within anything critical. He's a E.E. and tuned up (no pun intended) my two Trans-Oceanics as well as my Scott 333B tuner. If a genie appeared and gave me a Marantz 10B, I'd take the day off and drive it over to New Orleans to have Terry check it out..

teriemer@teriemer.com

Aplogies for the slow response; not on this forum as much as I was. I will find out.

I know someone ( a E.E.) but he's in New Orleans

the whiskered Paul makes me think of Gandalf

I have some 40 yr old CRC hermetically sealed caps that are still just fine. Pity I did not buy up a stock when CRC went out of biz. CRC caps were the caps of choice for aerospace gear, and IIRC they mentioned their caps were used on the Voyagers, still rockin' in the interstellar void.

Heat, mainly...usually not an issue in home loudspeakers. The electrolyte in electrolytic capacitors slowly dries out whether they are used or not. Most 'lytics start high in value and slowly sink down below spec, even in "good homes." Dean is correct when he says sealed film and foil caps can last 50 or more years.The operative word is sealed, as in hermetically sealed in metal with metal to metal or metal to glass seals. in 50 years of audio, I have encountered exactly one (1) crossover cap that was "audibly bad" and it was about 30 years old (a non-polar lytic). Now, I have replaced old caps with ones that were "'audibly better" as well as giving peace of mind stability due to more modern construction.

I'm seeing the face of an eagle

Thanks for all the expressions of sympathy. We still have two cats, 8 and 5 years old. Both fairly blasé about music, but get interested in cat videos from YouTube

My avatar cat, Hiro, passed away last Saturday at the ripe old age of 18.5 years, surviving his sister, Saki, by three weeks. This is the full image of my avatar pic, which I will keep as a memorial to my Klipsch-Kat

This is the AK6 (current model) but it should be close enough to determine the"envelope"

Their destiny is strawberry daiquiris

The purple is positive, the blue is negative. I respectfully suggest you get a friend to label this for you, may save you some frustration.

The K401 midrange mouth is too small, that's the root cause, and the topic has been discussed in this forum for years. This is why the Jubilee uses a much larger midrange horn.

Thanks but the speaker aspect is just one of the things I'm contemplating. As we've learned with other hobbies before, buying such a machine (and the home shop wish book items that were its predecessors) creates an expensive domino effect of having to buy more and more accessories, move stuff out of the garage into a shed we would have to buy, you see where this is going.. no conceivable ROI in my lifetime. If I could find a biz model that would even break even it might be worth try. My speaker experimentation days are almost over anyway. I do need to research how the Snapmaker is as a CNC machine, most info I've seen is discussing its 3D printing capability.

I am considering buying a Snapmaker, for various items for the household and perhaps to sell. Two of the things I'm looking at are replacement driver diaphragms and horns. I realize that a horn shape might be difficult to print, especially for anything above tweeter size. Also realize that the plastics available for 3D printing might not be suitable as diaphragm replacements for phenolics. So, anybody with speaker-specific experience with a Snapmaker? Thanks

As the can of worms opens ...the K401/K 55 (whatever) combo begins to have issues at the outer edge of the top range, and the reduced crossover fixes that to an extent. Also, IIRC, the K-77 as last updated (the Philippine version?) was more robust mechanically that the original ElectroVoice T-35/K-77s. The Khorn midrange transition has been discussed many times here and no doubt our pals will chime in shortly.

Pretty sure those are old AR domes...the polar plots will be interesting, to say the least

I've had friends who were pro wedding photographers years ago and some of them reported that the families took the proofs to another lab and had internegs made so they could print them themselves and avoid paying the photographer for the rest of the package. My experience is that if you post your intellectual property to the internet you lose control of it, unless your are a big media company with lawyers who devote their time to sending takedown notices to YouTube. An expensive game of whack-a-mole.

To me, the special part of this composition is how many of the kids are off the ground at the same time...great shot!

We have indirect LED lighting in our living room that is programmed to cycle through colors. In some of the phases, I can tell there's a significant UV component because certain inks ands dyes in the room start glowing.

I should have added that the "copper" portions were embossed and foiled (or printed with high-quality metallic ink). Not cheap I am sure. I have some older letters from PWK that had the printed 'three horns" image.

For a while in the mid-70s, Klipsch had stationery that mimicked this badge.

I clicked 100% because I am content that my ears will never be any better than my primary system. However, I wish I could could have better amplification than our Pioneer 7.1 receiver in that system that drives 4 Corn IIs , a home made Klipsch-based center and feeds a Rhythmik 12 sub; more like the transparency of my Sumo Electra II & Polaris II combo in my secondary system here in my study. If I was 20 or 30 years younger, that would be a priority but it's not. The only one of our many music systems that is inferior to my own hearing is my garage system using a 70s RS receiver (cheap Pioneer in drag) driving RS Minimus 7 speakers.