hello everyone .
I want to build a Karlson K12 variant . what I want to change compared to the original project is the rear chamber .
no longer a bass-reflex chamber but an ML-TL .
I thought of building a cardboard model so you can understand better .
as you can see from the photos the chamber is composed of 5 sections that have different shapes and sizes .
the one corresponding to the speaker has a triangular shape and the front side has a slope of 60 degrees .
the chamber continues below with a narrowing ,
it passes to a linear section that at the bottom divides into two other lateral sections .
the area of the central section is equivalent to the sum of the lateral ones .
it continues upwards with a narrowing then ends at the end with two narrow and long openings placed vertically on the sides of the container .
excluding the final part, all the other sections have a larger area than the SD parameter of the 12" driver.
this configuration allows you to keep the dimensions of the original K12 container unchanged
(width and depth) the only dimension that changes is the height.
however there is a substantial change in shape when you move from one section to another
I wonder if there is a similarity with what is described in the link below:
http://www.organstops.org/_apps/HaskellBasses.html
some time ago I built a K12 prototype, its front chamber has the classic exponential opening but
the one built by me has a triangular shape so it is different from the original one (you can't see it in the photos).
I intend to reuse the same front chamber for the new project,
that's why I can place the openings on the sides of the container, as has already been done previously.
I don't know what the behavior could be so before building the container and test it
with a speaker that I have to buy (I already have a 12" driver but I don't know its TS parameters)
I would like to know your opinion.
if this container has what it takes to work I ask you for advice on buying a 12" speaker
(I don't know if it is better to buy a definitive driver that can cost even €300 or instead buy a very cheap driver for the sole purpose of experimenting).
I don't know which one to choose.
thanks.
I want to build a Karlson K12 variant . what I want to change compared to the original project is the rear chamber .
no longer a bass-reflex chamber but an ML-TL .
I thought of building a cardboard model so you can understand better .
as you can see from the photos the chamber is composed of 5 sections that have different shapes and sizes .
the one corresponding to the speaker has a triangular shape and the front side has a slope of 60 degrees .
the chamber continues below with a narrowing ,
it passes to a linear section that at the bottom divides into two other lateral sections .
the area of the central section is equivalent to the sum of the lateral ones .
it continues upwards with a narrowing then ends at the end with two narrow and long openings placed vertically on the sides of the container .
excluding the final part, all the other sections have a larger area than the SD parameter of the 12" driver.
this configuration allows you to keep the dimensions of the original K12 container unchanged
(width and depth) the only dimension that changes is the height.
however there is a substantial change in shape when you move from one section to another
I wonder if there is a similarity with what is described in the link below:
http://www.organstops.org/_apps/HaskellBasses.html
some time ago I built a K12 prototype, its front chamber has the classic exponential opening but
the one built by me has a triangular shape so it is different from the original one (you can't see it in the photos).
I intend to reuse the same front chamber for the new project,
that's why I can place the openings on the sides of the container, as has already been done previously.
I don't know what the behavior could be so before building the container and test it
with a speaker that I have to buy (I already have a 12" driver but I don't know its TS parameters)
I would like to know your opinion.
if this container has what it takes to work I ask you for advice on buying a 12" speaker
(I don't know if it is better to buy a definitive driver that can cost even €300 or instead buy a very cheap driver for the sole purpose of experimenting).
I don't know which one to choose.
thanks.
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Your concept looks more similar to Karlsonator, which has ML-Voigt pipe as rear chamber.
It looks interesting and I wish you luck with your project. Only thing I can suggest is to try to simulate the ML-TL rear chamber in Hornresp, so you can get some guidelines about tuning frequency and response with driver.
It looks interesting and I wish you luck with your project. Only thing I can suggest is to try to simulate the ML-TL rear chamber in Hornresp, so you can get some guidelines about tuning frequency and response with driver.
I'd love to try somethong like this with a TC9FD, or even a pair like a pair like in a 0.53x Karlsonator 🙂
What are you planning to use above the K/ML-TL? The 12" is at a very steep angle and quite high too. At that angle the mid dispersion will not be reaching the sitting listener, the Karlson principle doesn't help there much either.
hello . are you addressing me ?.
the angle of the panel that houses the speaker is the same as the original K12 project . the position of the hole that you see in the cardboard model was made randomly because its only purpose was to communicate to you as best as possible what I had in mind to do .
the angle of the panel that houses the speaker is the same as the original K12 project . the position of the hole that you see in the cardboard model was made randomly because its only purpose was to communicate to you as best as possible what I had in mind to do .