Khornukopia

Very nice !

That might make people more agreeable.

Thanks to @jwgorman for letting the forum know about the sale price on the ESS AMT tweeters, and thanks to Chris A for testing the AMT, which helped persuade me to buy a pair of the tweeters that have intrigued me for a long time. Another thing I have wanted since my very first K-horns is tweeters that can be aimed, and since the AMTs don't have a typical mounting flange, I assembled some tilting brackets. My plan is to install these inside the top hats. They work really good on these tri-amped Klipschorns. Compared to other tweeters, the sounds of cymbals and chimes tend to shimmer for a moment longer, with very fine detail.

I also have an AV8801. I like its features and good sound.

Chris A is the expert, and shows the measured results of his tests. I also think he can hear the differences better than I can, so I recommend following his advice.

The remote control allows me to change slopes with a tap of the screen. I think I like the steep slopes in spite of the stated dis-advantages. Maybe things just work well enough together with my speakers in my listening environment.

My imaginary sine waves are different pretty colors so I can tell them apart from each other.

Measured 110 db at the listening position, to test the AMTs. Don't think I will do that to my ears again. The AMTs are fine.

On my tri-amp Klipschorns, the high pass for the AMT is presently set at 2000 Hz. Cranked the music to louder than what I consider tolerable rock concert levels for 30 seconds and the AMTs were fine.

The AMTs are an excellent match-up with the Cornwalls. Next, I am going to try these with my active crossover Klipschorns which will allow me to adjust the gain to the tweeter. I modified some 2" horn brackets given to me by @Emile. The bracket is turned down onto its face, a piece of plywood is attached and the AMT is secured with 8" TimberLOC screws. Directly behind the tweeter is a piece of #703 rigid fiberglass insulation, pushed down onto some thin nails sticking up through the plywood.

That is good news to read about. Did you send in a picture of your existing set, so they might be able to try and get the wood grain or color similar, if remotely possible?

This website is sponsored by people who build many fine speakers with MDF cabinets, and also many speakers built with plywood cabinets. I have several pairs of 30 year old Klipsch speakers of both types that are still good as new. Please feel free to buy your favorites and continue supporting this forum with your POSITIVE and FRIENDLY comments.

It reduces the amount of reflected sound. This can be adjusted by using different thickness pieces. The fiberglass insulation behind the tweeter is easier to put in place, rather than covering the wall. I use it because my install is close to the wall. I can add pictures when I get home in a few days.

I placed a block of Owens Corning 703 fiberglass insulation on top of the Cornwall cabinet, directly behind the AMTs. You can experiment with something like a down or poly-fill cushion or pillow.

I think it is woven with a metallic finish vinyl thread.

The K-55-V driver, threaded into the 1" to 2" adapter mounted on the 10" X 18" horn is a good sounding combination. This is using the stock passive crossover, so it is a fairly low cost modification. Next I will be listening to the pair of 2" drivers on the 10" X 18" horns.

Those Klipschorns are beautiful.

Maybe that could be about my install with the passive crossover?

They played music for a continuous 100+ hours while I was away from home, so they should be broken in. Moved the AMT tweeters and jumper wires from the Heresy IIs over onto the Cornwall IIs, which provide a better SPL level match. I like the clear, sparkling high frequency response. Have not measured or adjusted yet, just listening and enjoying.

The K-horn center speaker arrangement was a few years before I had any digital crossovers, so, no they were not time-aligned.

Yes for music, but for video, I did not care for the "big" sound of human voices from the center channel, so I removed the center K-horn and prefer the La Scala as the center speaker. I can recommend using the second pair of K-horns as rear surround speakers if you have the space.

That is good advice for beginners.

Your Yamaha remote has an HDMI OUT button above the Volume button. Have you tried scrolling thru the choices? If that does not help, you may have to open the Settings menu and configure the HDMI Standby settings. If your second monitor is a lower resolution display, the receiver will set both HDMI outputs to the lower resolution, according to page 74 of your owners manual.

I have been listening to some of these tweeters positioned above my Klipschorns. They sound good.

I disconnected the wires to the Heresy tweeter and squawker and taped the ends, then jumper wired at the binding posts up to the 50 uF cap and the AMT. Sounds very pleasant so far.