Thanks guys, I guess that puts a spanner in that idea.
I can't afford new woofers so would the D15LFA be suitable for a folder TL?
it's 96db efficiency puts it on target to matching the tc9f in the trynergy output wise.
I read your posts kees on bending and gluing multiple layers of 3mm ply today, it's looks doable at my end. Thanks for re-posting the details.
Xrk, I only have 4 of the peerless 850439 which would mean 2 for each Trynergy with an estimated output of 87.5+3=90.5dB output at 100Hz.
I assume that would mean having to pad the tc9f & LFA by 6bd and losing most of the gains of using a horn in the first place.
Unless I have done my maths wrong (very likely) I would need to consider finding another 4 x 850439's to really make a 3 way feasible, but if I can get the tc93 Trynergy working with the 15LFA as a two way crossed at ~500hz all I would need to but is some more wood???
I can't afford new woofers so would the D15LFA be suitable for a folder TL?
it's 96db efficiency puts it on target to matching the tc9f in the trynergy output wise.
I read your posts kees on bending and gluing multiple layers of 3mm ply today, it's looks doable at my end. Thanks for re-posting the details.
Xrk, I only have 4 of the peerless 850439 which would mean 2 for each Trynergy with an estimated output of 87.5+3=90.5dB output at 100Hz.
I assume that would mean having to pad the tc9f & LFA by 6bd and losing most of the gains of using a horn in the first place.
Unless I have done my maths wrong (very likely) I would need to consider finding another 4 x 850439's to really make a 3 way feasible, but if I can get the tc93 Trynergy working with the 15LFA as a two way crossed at ~500hz all I would need to but is some more wood???
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Actually when you run drivers in parallel you get +6dB for same drive voltage. With regular amps it is the voltage that matters not the rating at 1watt. Because impedance is half you double the current so 4 times the power or 6dB.
Let me run a sim of your drivers in the Classic anyway and see where you end up.
Let me run a sim of your drivers in the Classic anyway and see where you end up.
Every horn like that, but in the old days there where no low qts drivers as in these days, also the back chamber is dependent of the qts
better is to find specs of the original woofer but that is difficult except when find one and measure it.
oke form post 477 I do explane some more about the horn.
I did use thin wood of 4 mm for the flare band, three on each other in a press.
eminence get more expensive with lower qts.
http://www.eminence.com/pdf/Kappa_Pro_15A.pdf
regards
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hmmm, ok so we have:
TC9F = dB@2.83V/1m = 84.6 + 10dB = ~94.6 (Approx gain with horn, I think I remember you saying)
850439 = dB@2.83C/1m = 87.5 + 6dB = ~ 93.5
Delta15LFA = dB@2.83V/1m = ~96
So not too far off but kinda irrelevant if I can build a 2 way which I still like sound of, then experiment with adding the 850439 later. A 2 way also allows me to only use 1 minidsp and keep my OB rig running 🙂
Would any extra output from the LFA past ~95dB1w/1m be wasted since It would have to be padded to match the trynergy output anyway? Lower/deeper I understand but overall output upto 500hz?
TC9F = dB@2.83V/1m = 84.6 + 10dB = ~94.6 (Approx gain with horn, I think I remember you saying)
850439 = dB@2.83C/1m = 87.5 + 6dB = ~ 93.5
Delta15LFA = dB@2.83V/1m = ~96
So not too far off but kinda irrelevant if I can build a 2 way which I still like sound of, then experiment with adding the 850439 later. A 2 way also allows me to only use 1 minidsp and keep my OB rig running 🙂
Would any extra output from the LFA past ~95dB1w/1m be wasted since It would have to be padded to match the trynergy output anyway? Lower/deeper I understand but overall output upto 500hz?
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Ok I just ran sims with Delta15LFA in Univ Classic. You are in luck. It sort of works. 98dB from 48Hz rising to 107dB at 100Hz and 103dB at 500Hz. The high Qts gives some deep extension for a Univ Classic. Will post graph later.
ohhh nice, thanks bro
Just having a read through this thread...
https://community.klipsch.com/index.php?/topic/146927-the-rebirth-of-the-university-classics/
Just having a read through this thread...
https://community.klipsch.com/index.php?/topic/146927-the-rebirth-of-the-university-classics/
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It possible give a bump on the low end. not that bad and sometimes seen as a gift.
regards
🙂 Why not, a little extra bump in the bass can't hurt, and the minidsp makes it easy flatten the rise at 100hz
Because the Uni Classic normally starts falling off at 70Hz, the high Qts "bump" actually compensates for the fall and it is flat to 48Hz with flat shelf to 70Hz rising to max at 100Hz. All smooth rises though so a bit of EQ will work nicely to form this into a 98dB system. Seems a good match for 95dB TC9FD in the single cap post HPF to flatten per Kees 3.5kHz 6dB/oct filter. This may be one of the simplest all horn 2-way covering 50Hz to 20kHz for peanuts.
Jeeez, this might just work.
I'll keep working on the trynergy horn and convert the Uni-Classic plans into a Sketchup model then lay it all out.
Thanks for all the input gents, as always very generous.
I'll keep working on the trynergy horn and convert the Uni-Classic plans into a Sketchup model then lay it all out.
Thanks for all the input gents, as always very generous.
Just to confirm xrk before I scale, print and start cutting wood, these are the correct plans?
Mainly I don't quite understand the 2 flares drawn on the top and bottom Plan pdf?
Mainly I don't quite understand the 2 flares drawn on the top and bottom Plan pdf?
I have did drawn the horn in sketchup, some parts did not get drawn because sketchup is troublesome sometimes.
But I can have also have little experience with cad.
And I have to go back to older windows, because windows 10 is very troublesome do not let work software work properly and give hidden commercials, the consumer programs on Netherlands tv have warned for leaking windows 10, do the pc work for me or do companies do decide who is boss? shamefull actions. For me it seems more and more a commercial program so go fast to other system in future.
regards.
But I can have also have little experience with cad.
And I have to go back to older windows, because windows 10 is very troublesome do not let work software work properly and give hidden commercials, the consumer programs on Netherlands tv have warned for leaking windows 10, do the pc work for me or do companies do decide who is boss? shamefull actions. For me it seems more and more a commercial program so go fast to other system in future.
regards.
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Microsoft is finally monetizing all their data collection backends the way Facebook and Google already have, it's the way of the future unfortunately. I still haven't found a Linux distro that works with everything I need for day to day business relationships so it has just become a game of risk minimization. You pick your battles I guess.
Back to the horn, I feel stupid for asking but I am still a bit confused by the ..." this curve represents" line in the 'top and bottom' pdf. Which line am I cutting on? Like I said, stupid question but it's early here and the coffe ain't doing its job yet!
Back to the horn, I feel stupid for asking but I am still a bit confused by the ..." this curve represents" line in the 'top and bottom' pdf. Which line am I cutting on? Like I said, stupid question but it's early here and the coffe ain't doing its job yet!
The drawing is a view showing the side walls attached and it is normal to the bottom wall so you see a perspective of the top edges of the side walls as the curves not labeled with arrows.
Personally I would not cut the bottom or top wall along those curves but leave them oversized like a rectangle and draw those curves on the bottom and top wall. When you cut out the side walls and force it to curve to the drawn curve the panels will self-assemble the tractrix profile. That is, by forcing the boundary condition of the curves side wall to the line on the flat it forms the tractrix curve.
Having extra material on top and bottom leaves room to mount the woofers of you choose to do that and it gives more strength to the structure. Kees cut all joints including top and bottom but that's not what o would recommend.
Ya I think I will follow your lead x, I'm still interested in mounting some mids later on.
I have found all the wood I need but am flying to Vietnam for a week long business trip so will update after I get back.
Cheers gents..
I have found all the wood I need but am flying to Vietnam for a week long business trip so will update after I get back.
Cheers gents..
I have also fight to find out how make the horn, but with help off the author it did work fine. Only I was forgotten to set calculation right so I have a free air horn and not a wall or corner who is quite smaller, but I go on with these and try out, I have find some ads about a wood lathe, she are used quite cheap and so better buy one then make it myselfs.
What concerns microsoft, I think linux go faster with growing up and will let windows software work in future, then I step on it I am shure.
Here I have place the pictures about the way I did made the horn. post 508, 509, 510, 514, where the mold are and the clamps.
here the lathe, costs are 100 euro ex shipment..
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@xrk971
I have remove all from the akabak script except the hf driver frs8m, so I can see only the wideband section.
I did see double wave guids, if I remove one it still do sim with some change on 300 hz region.
Is the extra wave giude for the bass mid section who is injected on the horn? I do think yes and if removed then I can remove the extra wave guides? mucho less work fill it in for me mm2 to m2 .
regards
I have remove all from the akabak script except the hf driver frs8m, so I can see only the wideband section.
I did see double wave guids, if I remove one it still do sim with some change on 300 hz region.
Is the extra wave giude for the bass mid section who is injected on the horn? I do think yes and if removed then I can remove the extra wave guides? mucho less work fill it in for me mm2 to m2 .
regards