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Some Functional KHorn Questions

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Parallax982

Super Member
Just a few questions about the KHorns I purchased yesterday.

1. Here are the only tags I can find on them.

One blank of this on each speaker (with nothing filled in):
IMG_20250120_125327.jpg

And then one of these on each speaker:
IMG_20250120_212501.jpgIMG_20250120_212046.jpg

I think this makes clear they are genuine Klipschorns and that they were manufactured in early 1996. Makes sense since the AK-3 crossovers were used from 1989 to 2001. But why is there no serial number? Is this common?

2. Watched the Penn State -- Notre Dame game today on my TV hooked up to the Klipschorns through a Denon preamp and using the 2270 as an amp. Will it harm the speakers to listen to non-musical content like a football game through them? I was impressed with the sound. Felt way more like being at the stadium than I've experienced before. The commercials were even more engaging.

3. My house has moldings like these throughout.
IMG_20250120_231240.jpg

As a result, there's maybe 3/8th of an inch of space between each speaker and the wall. Is there a gasket you would recommend to fill the space? Would I glue it to the side of the KHorns? I have some weather stripping that might work but I won't apply it until I get input from those who know the right way to deal with such things. The bass sounds great as is so I'm not wedded to necessarily doing anything. Just trying to figure out what's optimal.

Thanks.
 
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putting pipe insulation, those gray tubes that resemble pool noodles, is a common method to seal the sides against the wall. no glue necessary, it will stay in place with friction. You won't harm anything watching shows through your K-horns, I use my 3-way horns as mains in my home theater. What will harm your speakers is a clipped distorted signal and too much power, which you don't seem to be the frat-boy type who cranks up Nickelback or whatever it is that the choads are listening to these days. enjoy them!
 
Serials and signature ls are just faded out on those tags.

Common with that style serial tag and the ballpoint pen they appear to be signed in
 
Gigantic said:
putting pipe insulation, those gray tubes that resemble pool noodles, is a common method to seal the sides against the wall. no glue necessary, it will stay in place with friction. You won't harm anything watching shows through your K-horns, I use my 3-way horns as mains in my home theater. What will harm your speakers is a clipped distorted signal and too much power, which you don't seem to be the frat-boy type who cranks up Nickelback or whatever it is that the choads are listening to these days. enjoy them!
Click to expand...
Thanks. You're right, definitely not a frat-boy type. When I was in a college fraternity, wasn't a frat-boy type.

Isn't pipe insulation tubular? Do you cut it down the middle, creating a sort of arch? I could imagine placing the apex of the arch against the speaker and the flat part against the wall. But it would be hard to cut it accurately over a long length. Or do you just leave it tubular and wedge it between the speaker and the wall? Would have to be the stuff made for very small pipes. Otherwise, it would stick out and look horrible.
 
winglet said:
Serials and signature ls are just faded out on those tags.

Common with that style serial tag and the ballpoint pen they appear to be signed in
Click to expand...
Thanks. Makes sense. Guess I don't need the serial numbers for anything. Will write the seller to find out if he has any of the original paperwork.
 
Parallax982 said:
Thanks. You're right, definitely not a frat-boy type. When I was in a college fraternity, wasn't a frat-boy type.

Isn't pipe insulation tubular? Do you cut it down the middle, creating a sort of arch? I could imagine placing the apex of the arch against the speaker and the flat part against the wall. But it would be hard to cut it accurately over a long length. Or do you just leave it tubular and wedge it between the speaker and the wall? Would have to be the stuff made for very small pipes. Otherwise, it would stick out and look horrible.
Click to expand...
It’s already cut
 
My Heresy's had the serial numbers carved into the back of the speakers, and the back covers. Look around, at the cost of KHorns, they should too. I don't remember if my KHorns did or not. GREAT SCORE MAN!!!! Mine lasted 2 weeks till I figured out I needed a bigger house. I didn't have a corner or 2 to spare. :)
 
No need, pics I've seen , people have just slipped the pipe insulation over whatever board needs to be sealed to the wall. maybe a notch here or there to clear something.
Didn't Mr.K. also recommend some rubber garage door seal flap to seal the back sides to the wall?
 
DirtyErnie said:
No need, pics I've seen , people have just slipped the pipe insulation over whatever board needs to be sealed to the wall. maybe a notch here or there to clear something.
Didn't Mr.K. also recommend some rubber garage door seal flap to seal the back sides to the wall?
Click to expand...
I'll see if I can find some photos. Thanks.
 
bonzoro said:
My Heresy's had the serial numbers carved into the back of the speakers, and the back covers. Look around, at the cost of KHorns, they should too. I don't remember if my KHorns did or not. GREAT SCORE MAN!!!! Mine lasted 2 weeks till I figured out I needed a bigger house. I didn't have a corner or 2 to spare. :)
Click to expand...
Been looking around for numbers but don't see any. Not sure where they would be.

Sorry about your Khorns. I hope the Heresys have been fulfilling.
 
grindstone said:

Klipsch Modifications

@Martin 530 , here's my edited screenie with pipe insulation highlighted. Maybe whomever owns this thing is here and will chime-in. Start a thread if you're still around here and you'll likely get better action--I missed your post completely until today. There are about as many configs as...
audiokarma.org
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Thanks. Did some more searching and came up with these photos. Any idea why all photos show the inner and upper edges sealed but not the outer edges which also snug up against the wall?

post-25216-13819325929114.jpgFoaming Khorns.jpgfoam_pipe_insul_seal_khorn_rear_eg_enhcol_.jpg
 
Call the largest RV dealership you can find with a good service department . Then ask them for the wiper blade seals that they replace on motor home slide rooms. They come in many different thicknesses and widths. Its important to get a tight fit so as to get the best performance of midrange frequencies produced by the woofer. Or you may be able to get the gaskets from Klipsch instead.
 
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twiiii said:
Call the largest RV dealership you can find with a good service department . Then ask them for the wiper blade seals that they replace on motor home slide rooms. They come in many different thicknesses and widths. Its important to get a tight fit so as to get the best performance of midrange frequencies produced by the woofer. Or you may be able to get the gaskets from Klipsch instead.
Click to expand...
That's a good idea. Will contact Klipsch.
 
Guys, I'm a bit confused.

I assume the foam isn't needed here (the circled segment) because that edge doesn't contact the wall. Is that correct? I assume so because the other examples don't show any foam there.
Top.jpeg

But the part that perplexes me is this. Why is there no foam in the side sections circled below? They definitely contact the wall. Is it because that's where the sound radiates through the screen?
Sides.jpeg
 
Parallax982 said:
Been looking around for numbers but don't see any. Not sure where they would be.

Sorry about your Khorns. I hope the Heresys have been fulfilling.
Click to expand...

I just sold them to finance my Martin Logan Motion 60XTI's They sound way better than my Modded Heresy's.





Motion 60XTi.jpg
 
Here is what the site says. Get the flashlight,

From 1948 though 1961, Klipschorn's had the serial number stamped into the tailboard, woofer access door, or inside the woofer chamber. They are there, even the Heresy's had em stamped in addition to the sticker. Check the bottom i think that's where the access panel is. You'll find it.

the serial number should be stamped in the top center of the rear panel the goes up against the wall and also somewhere by the crossover

If the tag is missing, it should be stamped in the wood near the crossover, often in the edge plys.

You were correct I found the on the edge of the ply. TY
 
Parallax982 said:
Guys, I'm a bit confused.

I assume the foam isn't needed here (the circled segment) because that edge doesn't contact the wall. Is that correct? I assume so because the other examples don't show any foam there.
View attachment 3406928

But the part that perplexes me is this. Why is there no foam in the side sections circled below? They definitely contact the wall. Is it because that's where the sound radiates through the screen?
View attachment 3406929
Click to expand...


For their FLAGSHIP, they are not going to stick some foam on a $16,000 speakers. They don't even need gaskets (Noodles). See post 69 in this thread. Bob said enclose the backs and put them where you want. I trusted Bob Crites to the max.... He was a smart MOFO.........

A Baseless Klipschorn claim

I'd speculate if they were that far apart (30') you might then be best served to have a center channel? I think I've heard some people say they had a hole in the sound when their room approached (if I'm remembering correctly) about 25' ??
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