Hi X - what width and depth is the 24" tall variant? what would it do with Beta8cx?
with Beta 8 , an internal tube and small driver might fit - a tube on top would be easy - can point up or down -a K-tube could probably be shortened to 3" in length to work with Beta8
with Beta 8 , an internal tube and small driver might fit - a tube on top would be easy - can point up or down -a K-tube could probably be shortened to 3" in length to work with Beta8
An externally hosted image should be here but it was not working when we last tested it.
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0.75x wide for 12in wide and 0.80x deep for about 14.2in deep. Beta 8cx is similar to a Beta 8A I think? Will have to run sim - I think cx Qts is lower.
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that would be a real nice size - - I'd still like to have a Karlsonator "10" for Beta10cx - the "12" looks "too big"😀
LF corner seems around 38Hz
LF corner seems around 38Hz
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<3 I love these bad boys! - @freddi - im on it! i just have shared feelings about the detaching part, i thought about may different options, locks, magnets, butterfly screws etc, i am afraid it creates too much extra vibrations reducing the overall sound quality - i already did some draft design of it and another alternative without detaching but then the K built wont do at all as it would be one giant cube - any ideas where i could find info?
woot, thank you so much for that, X.
It's impressive how much bass the cabinet is able to squeeze out with that volume. I'll have to go with a different tweeter should i choose to cope with the lowered sensitivity but 28hz? my my....
It's impressive how much bass the cabinet is able to squeeze out with that volume. I'll have to go with a different tweeter should i choose to cope with the lowered sensitivity but 28hz? my my....
Yes 28Hz comes at a price of it not being balanced so you will need to drop your mids and treble by almost 8dB with a big shelf filter or EQ. A more balanced design is maybe 45Hz but much smaller box.
Ha-ha or a shoe lace? I tried to spit on it as glue but to no avail 🙁 i will get some sheets cut next week, I will have some left overs so I will try few things and make a more in depth report. I had to change entirely the design to fit the requirements of the end user (solid state portable audio system)
It would have been a 24in tall vs 36in tall as Donovas had requested. The 24in tall is 0.80x scale.
would an extra inch of width, (13") x14.2 x24 internal be enough to make a useful Karlsonator "10" for Beta10cx ?
I'd have to run a sim but 10/12 scale sould probably be closer to the right size. Didn't I already run a bunch of Beta 10cx sins already?
you ran Beta10cx sims for XKi (I think) and scaled K15 (for certain) - all I can find offhand quick is a sim for the full size Karlsonator (GregB's Karlsonator 12)
I think it could be useful to tune GregB's Karlsonator 12 a bit higher - as built to plan its tuned to around 38Hz which is its LF corner when loaded with Eminence's Beta10cx - it handles power just fine but I think its a bit "soft" in the "hit" department.
an 0.8 scale K15 sim seems competitive when using speakers like Kappa12
a K-tube is one way to go when one has to do 2-way and doesn't have a suitable coaxial. Beta12LTA can be augmented with a 1005 type piezo to give pretty good sound.
it might be good to have a somewhat smaller Karlsonator than the 12 for Beta10cx.
Beta10cx subjectively doesn't have the midrange brightness nor sensitivity of some fullrange. But it is good for bass power so tradeoffs - YMMV
0.8 scale Karlson K15 with Kappa12a
XKi with Pyle PYM1298 (~same speaker as Kappa12a)
Karlsonator "12" predicted spl and tuning Beta10cx
Karlsonator "12" actual tuning with ~1/2 ohm source impedance and 12LTA
an 0.8 scale K15 sim seems competitive when using speakers like Kappa12
a K-tube is one way to go when one has to do 2-way and doesn't have a suitable coaxial. Beta12LTA can be augmented with a 1005 type piezo to give pretty good sound.
it might be good to have a somewhat smaller Karlsonator than the 12 for Beta10cx.
Beta10cx subjectively doesn't have the midrange brightness nor sensitivity of some fullrange. But it is good for bass power so tradeoffs - YMMV
0.8 scale Karlson K15 with Kappa12a
XKi with Pyle PYM1298 (~same speaker as Kappa12a)
Karlsonator "12" predicted spl and tuning Beta10cx
Karlsonator "12" actual tuning with ~1/2 ohm source impedance and 12LTA
Freddi,
Ok, I see where you are going with this, a 12 in or 10in K'nator tuned a bit higher maybe 48Hz for more punch?
Ok, I see where you are going with this, a 12 in or 10in K'nator tuned a bit higher maybe 48Hz for more punch?
besides a "Karlsonator10", I wonder how a dual 10 XKi or K-nator would do for fidelity and punch? - something like a Delta10a or better. The proposed dual pym1298/Kappa12a XKi puts chamber volumes up around 100l rear/25l front with good LF extension. Can it be sometimes better to trade a bit of low end for somewhat smaller rear chamber and possibly better cone control? I'd like 120dB plus peaks without terrible compression. Don't know if two 10" with typical 2.5" diameter voice coils in parallel can do that or not (?) - also, the matter of K-tube and compression drivers - would it take two K-tubes/drivers splayed ~30 degrees apart to handle short high spl peaks?
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Karlsonator for CSS FR125SR
I received a request asking if the CSS FR125SR driver would work and what size box is optimal.
http://diyaudioprojects.com/Drivers/CSS-FR125SR/CSS-FR125SR-Speaker-Datasheet.pdf
According to my simulations, a 0.53x scale in height and depth and 0.46x in width makes a nice box that has an F3 of about 59Hz but with superb bass amplitude of 88.7dB after baffle step losses - so no BSC circuit is needed. It should sound really nice - full rich bass.
Frequency response:
Cone displacement:
Impedance:
I received a request asking if the CSS FR125SR driver would work and what size box is optimal.
http://diyaudioprojects.com/Drivers/CSS-FR125SR/CSS-FR125SR-Speaker-Datasheet.pdf
According to my simulations, a 0.53x scale in height and depth and 0.46x in width makes a nice box that has an F3 of about 59Hz but with superb bass amplitude of 88.7dB after baffle step losses - so no BSC circuit is needed. It should sound really nice - full rich bass.
Frequency response:
Cone displacement:
Impedance:
Attachments
that's really impressive for a little driver. With regards to higher spl 2-way K's it might be good to use a double K-tube arrangement as practiced some years ago (sorry for the crude sketch - lol) - this should help on thermal compression
tubes are vertically stacked one above the other, bottom tube tipped 30 degrees up, top tube tipped 30 degrees down, tips of tubes just touching one-another.
tubes are vertically stacked one above the other, bottom tube tipped 30 degrees up, top tube tipped 30 degrees down, tips of tubes just touching one-another.
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Faerber Acoustic's rationale for using the K-coupler as a high frequency element
http://ja-gallery.com/images/artists/work/Faerber/Faerber_pressrelease_small.pdf
http://ja-gallery.com/images/artists/work/Faerber/Faerber_pressrelease_small.pdf