Mm, I have changed over to the 0.4x as my main speakers now, I prefer the extra clarity in the mid/highs. They just work better in my narrow room (hollow raised floor) , there's a horrible bass node around 60hz here. And I don't need to turn them up so much for them to sound good (I listen from 4-6 feet away) . Really cool easy to build speaker.
Mm, I have changed over to the 0.4x as my main speakers now, I prefer the extra clarity in the mid/highs. They just work better in my narrow room (hollow raised floor) , there's a horrible bass node around 60hz here. And I don't need to turn them up so much for them to sound good (I listen from 4-6 feet away) . Really cool easy to build speaker.
Glad it's working well for you. The 0.40x is a great size from standpoint of easy to build and it is small enough to fit anywhere. The mids and treble on it are fantastic. I have never heard anything but a foam core version. I wonder how it sounds in wood?
It sounds good, much bigger than it looks.
I made one with 12mm arauco plywood and vifa TC9. Too polite for me, then try Faital 3FE25 and has the right amount of highs. No tweeter needed.
I was surprised they work ok right on the floor against back wall. The sounds flow around the front, sweet spot is big. Maybe the smallest TV+movies set?
Very good design, thank you
Driver choice
Hi,
I started to make a pair of 0.53x scale enclosures using 10mm MDF.
I was thinking to use pa130-8 as TV speaker but when I tried to find them in Europe .... A pair is 75€ shipping include ... 😱
So which drivers (or dual) can be use in a 0.53 scale : dual-tc9, pa130-8 and ?
It should be great to make a list on the first topic. 0.40x scale already have a large number of choice : tc9, tg9, rs100, ps95, 3fe25, frs8 ...
Or how can I simulate by myself which drivers can be used ? 😎
There are also some nice drivers in Europe cheaper than in North America which look like real bargain : fountek fr135ex for 55€ 😀 ...
Hi,
I started to make a pair of 0.53x scale enclosures using 10mm MDF.
I was thinking to use pa130-8 as TV speaker but when I tried to find them in Europe .... A pair is 75€ shipping include ... 😱
So which drivers (or dual) can be use in a 0.53 scale : dual-tc9, pa130-8 and ?
It should be great to make a list on the first topic. 0.40x scale already have a large number of choice : tc9, tg9, rs100, ps95, 3fe25, frs8 ...
Or how can I simulate by myself which drivers can be used ? 😎
There are also some nice drivers in Europe cheaper than in North America which look like real bargain : fountek fr135ex for 55€ 😀 ...
Let me run sim for F135EX. The TC9FD dual is probably most cost effective if you don't have cheap PA130.
Nothing special, I never hearded them 😉.
But those who have single and dual tc9 seemed to prefere the single one ... maybe due to the different effect the Karlson apperture has on each driver.
However single tc9 don't have enought bass 😀.
The dual TC9FD sounds better than a single one in a Karlsonator in my opinion. Mostly the increase in sensitivity but bass extension goes from 80Hz to 55Hz. The TC9FD is budget driver but probably one of the best sounding budget drivers ever made.
That is a great deal for the FR135EX. It can work well in a 0.53x scale Karlsonator (depth and height) and 0.45x scale in width.
It achieves 87dB down to 63Hz and F3 is 53Hz. Since it is a 85dB sensitive driver, this may be just enough to compensate for any baffle step loss, especially if place on the floor or near a back wall.
I hope you build it and let us know how it works. It's kind of a slim profile box - should look and sound nice.
Attachments
Already start the box with 0.53 width and don't have the good tool to cut it ... I'll order some tc9 🙄.
I only read good things about the fr135ex and your sim is realy impressive
.
10mm with 0.53 height/deep + 0.45widht => 417*239*195 mm (external)
I was fearing something bigger (0.6 or more) for a 5" driver.
This should be my next build. Summer si comming as woodworking's time 😉. It may be good to use plywood instead of MDF for this one 😎.
I only read good things about the fr135ex and your sim is realy impressive
.10mm with 0.53 height/deep + 0.45widht => 417*239*195 mm (external)
I was fearing something bigger (0.6 or more) for a 5" driver.
This should be my next build. Summer si comming as woodworking's time 😉. It may be good to use plywood instead of MDF for this one 😎.
I am curious if this driver would work in a Karlsonator enclosure:
Pioneer PAX-A16
I dont have all the specs, but GM provided me at one point with some reverse engineered TS parameters attached below.
Trying to find an enclosure for these drivers and put them to use.
Pioneer PAX-A16
I dont have all the specs, but GM provided me at one point with some reverse engineered TS parameters attached below.
Trying to find an enclosure for these drivers and put them to use.
Attachments
The parameters look at first view to be ballpark for a Karlsonator. I would think something about this size would be pretty close, perhaps a bit smaller. Beyond that you'd have to convince x to run his akabak sim.
This PAX-A16 can work well in a Karlsonator and achieve great sensitivity - however, it comes at a price of a large box as the Vas is so big. With a 0.8x scale in height and depth and 0.7x scale in width, you can have a 94dB sensitive speaker with a very gradual deep "pro audio" extension. The F3 if about 57Hz, but the speaker will sound like it goes deeper as the falloff is very gradual. F10 is 40Hz - so there is nice extension there.
Here is predicted frequency response:
Predicted Impulse Response is pretty clean:
Here is the cone displacement - need to watch for content below 30Hz and use a high pass filter if such content exists to protect cone:
There are very few simple full range speakers that can reach 94dB sensitivity at 2.83v and 1m with an F3 of 57Hz. You should build it if the size is not an issue for you. This is assuming the speaker sits on the floor away from walls and baffle step loss is already accounted for.
Here is predicted frequency response:
Predicted Impulse Response is pretty clean:
Here is the cone displacement - need to watch for content below 30Hz and use a high pass filter if such content exists to protect cone:
There are very few simple full range speakers that can reach 94dB sensitivity at 2.83v and 1m with an F3 of 57Hz. You should build it if the size is not an issue for you. This is assuming the speaker sits on the floor away from walls and baffle step loss is already accounted for.
Attachments
Last edited:
Thanks,
Interesting indeed! I guess I would be making it out of wood at such a size? The secondary appeal was that I may be able to build it from something other than wood. Maybe a pair of TC9FD's are in my future.
Looks like it would make a good speaker, but given the size and my lack of ability to account for baffle step loss, I may be a bit over my head. IDK.
Interesting indeed! I guess I would be making it out of wood at such a size? The secondary appeal was that I may be able to build it from something other than wood. Maybe a pair of TC9FD's are in my future.
Looks like it would make a good speaker, but given the size and my lack of ability to account for baffle step loss, I may be a bit over my head. IDK.
What I am saying is that the model already accounts for baffle step loss and you still have plenty of bass so don't worry about it. It is very sensitive indeed.
Fountek fr135ex 0.53/0.45 karsonator
I look closer to the fr135ex and have some (stupid 🙄) questions ...
Madisound share a BR enclosure for the fr135ex (http://www.madisound.com/pdf/FR135EX-Encl.pdf) with two RLC filters.
First is 22uF/0.548mH/12.5R :
Second is 2.7uF/80uH/15R :
Initial loudspeaker response is :
As I only have limited skills (close to none) about filters, I wonder if they are needed for a karsonator ... 😕
For information the initial sim is :
Second question about brace :
I'm using 10mm MDF and can add (easely) more braces (in red) :
Do you think that's a good idea or it's just overkill/useless (and decrease internal volume 🙁) ??
I look closer to the fr135ex and have some (stupid 🙄) questions ...
Madisound share a BR enclosure for the fr135ex (http://www.madisound.com/pdf/FR135EX-Encl.pdf) with two RLC filters.
First is 22uF/0.548mH/12.5R :
Second is 2.7uF/80uH/15R :
Initial loudspeaker response is :
An externally hosted image should be here but it was not working when we last tested it.
As I only have limited skills (close to none) about filters, I wonder if they are needed for a karsonator ... 😕
For information the initial sim is :
Second question about brace :
I'm using 10mm MDF and can add (easely) more braces (in red) :
Do you think that's a good idea or it's just overkill/useless (and decrease internal volume 🙁) ??
You should keep the "Y" brace at the bottom, you don't need the corner ones. Add a simple one anchoring the bottom tip of the divider to the back wall on the right. The front K aperture can be braced but needs to be removeable so front can come off for driver removal/adjustment. Use 3/4in dowels screwed in place to brace the front K aperture to the baffle wall.
You don't need a RLC baffle step correction but it looks like they are recommending those as notch filters for the peaks, they may be useful. However, just listen to it without it first - the K-aperture will change the response curve and often times, cures a lot of the offensive peaks passively via acoustics rather than electronics.
Looks good!
Very cool! So in regards to the 0.8x and 0.7x dimensions, am i basing that off of the original Karlsonator design and dimensions of a full size then simply applying the multiplier? Thank you.
Hi
Please help me with the best Karlsonator enclosure size for this speaker:
Def_Driver 'Snake69Fast" |Notes: 12 inch fullrange SPL: 94,587db 30 watt 1mm xmax Qts 0.495
Sd=572.56cm2
fs=31.24
Mms=36.331g
Qms=6.907
Qes=0.534
Re=7.2
BL: 9.810TM
Le=0.6mH
Vas: 259.741
Thank you!
Please help me with the best Karlsonator enclosure size for this speaker:
Def_Driver 'Snake69Fast" |Notes: 12 inch fullrange SPL: 94,587db 30 watt 1mm xmax Qts 0.495
Sd=572.56cm2
fs=31.24
Mms=36.331g
Qms=6.907
Qes=0.534
Re=7.2
BL: 9.810TM
Le=0.6mH
Vas: 259.741
Thank you!