K-horn plans

[Sadoinc]

It looks like I need to rethink my plans for a K-horn.
I created a simple model to see how much space they would take, and I have no room for them if I do not move a door
I have to look for something else to build, for example cornscala. It was a shame there was not enough space. Do not need new speakers, but saw this as a challenge

Does anyone have any suggestions for other speakers to build?
with regards,
Nils

[myhrrhleine]

K-horns are a very big project.
The speakerlab plans are for one half inch or 12.7mm
You will need to adapt them for 19mm.
I would recommend adding 19mm sheets to the walls at the corner to increase rigidity unless the walls are brick or concrete.
The proposed midhorn driver will work but it needs equalizing.
its designed for voice-PA so it is not very flat.

[DrBoar]

I am not saying that La Scal sound good up to 1200 Hz but it does have output way above the predicted mass roll off frequency. (This driver has about 150Hz as mass roll off)

Blue curve a classic bass driver Fr 30 Hz Q 0.4 the green curve a Beyma horn driver Fr>60 Hz and Q of 0.2 so that one has a mass roll of at 600 Hz in theory

It has slam but not the depth of the corner horns.

[whgeiger]

Originally Posted by Sadoinc

It looks like I need to rethink my plans for a K-horn.
I created a simple model to see how much space they would take, and I have no room for them if I do not move a door
I have to look for something else to build, for example cornscala. It was a shame there was not enough space. Do not need new speakers, but saw this as a challenge

Does anyone have any suggestions for other speakers to build?
with regards,
Nils

If you just change the door to open out would that be sufficient solution?

WHG

[Coytee]

Originally Posted by Sadoinc

The Jubilee might be an option, but if I remember right, it`s a lot bigger than the K-horn.

The Jubilee has essentially the same footprint as the Klipschorn. Yes in absolute terms the Jubilee is bigger but that's because the back is enclosed and brings the sound back around to the front.

The Khorn instead, simply fires into the corner.

Once you put them BOTH into a proper corner, the Juiblee does NOT infringe any more into the room than the Khorn does (well, maybe not much more)

My memory says the Jubilee needs about 36 inches, about 1 meter, from the corner. This might be a couple inches more than the Khorn.

What makes the Juiblee appear so outlandishly huge is that (wonderful) huge horn on top of it.

Having heard that huge horn (K402) on top of the Jubilee as well as on top of a LaScala and a MWM and atop a KPT 415 bass bin, I'm here to tell you it excells in just about any application.

The KPT 415 bass bin is this monster KPT - 942 - 4 - T | Klipsch

The design paramaters for the Jubilee as I recall are:

1. Raise the HF output of the bass bin to 1Khz (accomplished but it's still being crossed around 450Hz)
2. Keep the same footprint as the Khorn (accomplished if you excuse the technical size addition of the back panel)
3. Keep the same or lower the distortion vis-a-vie the Khorn (accomplished, in fact, if my memory serves me, the Jubilee has 1/3'rd the distortion the Khorn exhibits)


From a simple real world perspective, the Juiblee will absolutely knock your socks off. Doing a side by side to a Khorn will convince you that there really isn't a choice if it's sound you're after. A large part of this magic is the improvement in sound by using the 2" K402 horn and getting away from those smaller horns.

The Jubilee will be an easier build and provide superior sound.

That said, best of luck in whatever you build!!

I am chasing Moray around like a little shadow...

[Coytee]

Originally Posted by Sadoinc

It looks like I need to rethink my plans for a K-horn.
I created a simple model to see how much space they would take, and I have no room for them if I do not move a door
I have to look for something else to build, for example cornscala. It was a shame there was not enough space. Do not need new speakers, but saw this as a challenge

Does anyone have any suggestions for other speakers to build?
with regards,
Nils

Great, now I read this after I wrote the book

You might do a lookup on various forums for the "JubeScala"

The JubeScala is taking a LaScala bottom end and mating it with either the (huge) K402 horn on top (used on the Jubilee) or, you can use the smaller K510 horn (also a 2" horn) and incorporate the smaller K510 into the tophat of the LaScala.

By going with the LaScala you can go 2-way and stay horn loaded on the bass bin.

I'll see if I can attach a picture of the JubeScala using the smaller horn.

It's the closest you can get to the sound of the Jubilee that I've yet to hear.

[Coytee]

dupe

[Sadoinc]

Originally Posted by whgeiger

If you just change the door to open out would that be sufficient solution?

WHG

The door opens outwards. I have only 82 cm from the corner to the door, and I should have had 30-40 cm more. I can move the door, but it is a project for the future.

[Sadoinc]

Originally Posted by Coytee

Great, now I read this after I wrote the book

You might do a lookup on various forums for the "JubeScala"

The JubeScala is taking a LaScala bottom end and mating it with either the (huge) K402 horn on top (used on the Jubilee) or, you can use the smaller K510 horn (also a 2" horn) and incorporate the smaller K510 into the tophat of the LaScala.

By going with the LaScala you can go 2-way and stay horn loaded on the bass bin.

I'll see if I can attach a picture of the JubeScala using the smaller horn.

It's the closest you can get to the sound of the Jubilee that I've yet to hear.

I think I'm going to go for Bob Crites Cornscala in the first place. Then I can use most of the parts in another project later. These will go deeper in the bass than Lascala.

There were many exciting horn here, but I have a waf I have to take into account too.
But thanks for the suggestions.
Rgds
Nils

[moray james]

Originally Posted by Sadoinc

I think I'm going to go for Bob Crites Cornscala in the first place. Then I can use most of the parts in another project later. These will go deeper in the bass than Lascala.

There were many exciting horn here, but I have a waf I have to take into account too.
But thanks for the suggestions.
Rgds
Nils

a vented LaScala will go lower than a Cornwall and you have much greater efficiency. A two way LaScala will integrate into a small room so much better than a three way. Best regards Moray James.