Hello
I'd like to share a relatively new tapped horn design with you all. It's called Lonely TH15 Pro and developed
by Viktor Stoll from Germany. I stumbled upon Viktors TH designs in a German DIY audio Facebook group, he
has done quite a few tapped horn designs ranging from 6 - 18".
I had a Paraflex Type O 2x15 subwoofer for my garage setup wich was quite impressive, but very big and hard to place.
I didn't fancy building another one just to tackle the problems I had with room modes. I found the Lonely TH15 wich was
about half the size of my Paraflex, and figured that two smaller subwoofers willbe better than one big.
Having built a BFM Table Tuba a long time ago and liking the sound of it, I didn't hesitate to build a tapped horn again.
The Lonely TH15 was designed around Thomanns inexpensive The Box 15LB075-UW4, I asked Viktor if I could use The Box 15LB100-8W instead?
He promptly answered that the box can be built narrower with a stronger driver. Didn't take him many days to come back with a new design suited
for stronger PA drivers and even adjusting the plans for 18mm BB-ply that I had on hand, what a champ! 🙂
These are easy to build, not too big and I really like the way it sounds. The cabinet tunig is 42Hz, but to me it reallysound deeper.
For the kind of music I listen to ranging from blues, rock to metal (even some EDM now and then) I can't say that I'm missing anything
in the low end. What I really like about them is how musical it is, no one note bass and really nice sounding upper bass. What's also
to like is how efficient it is and the way it's present from low volume.
I have compare it to the Marty Cube loaded with a Lavoce WAF 154.00 wich is tuned quite a bit lower with an F3 of 27Hz if I remeber correctly.
The Marty is impressive at high volumes and sure it goes lower. But the Lonely TH sound so effortless and musical that for me it's a
no brainer which one to keep. The Paraflex is of course even more efficient than the TH, having two drivers and being double the size,
but the TH still is more HiFi and sound better higher up in the register to me.
Now I only need to build another one! Hope this inspire some one who want to build a great subwoofer.
Here are links to Viktors posts with simulations, measurements and building plans on the German HiFi forum.
Lonely TH15 Pro, simulations and construction plans in english available at the end of the post.
http://www.hifi-forum.de/viewthread-159-11222.html
And here is the regular Lonely TH15, where you can find the simulation and also the real world measurements.
http://www.hifi-forum.de/viewthread-159-11218.html
Easy to build, single row bracing.
From the left Marty Cube, Lonely TH15 Pro, Paraflex Type O 2x15
I'd like to share a relatively new tapped horn design with you all. It's called Lonely TH15 Pro and developed
by Viktor Stoll from Germany. I stumbled upon Viktors TH designs in a German DIY audio Facebook group, he
has done quite a few tapped horn designs ranging from 6 - 18".
I had a Paraflex Type O 2x15 subwoofer for my garage setup wich was quite impressive, but very big and hard to place.
I didn't fancy building another one just to tackle the problems I had with room modes. I found the Lonely TH15 wich was
about half the size of my Paraflex, and figured that two smaller subwoofers willbe better than one big.
Having built a BFM Table Tuba a long time ago and liking the sound of it, I didn't hesitate to build a tapped horn again.
The Lonely TH15 was designed around Thomanns inexpensive The Box 15LB075-UW4, I asked Viktor if I could use The Box 15LB100-8W instead?
He promptly answered that the box can be built narrower with a stronger driver. Didn't take him many days to come back with a new design suited
for stronger PA drivers and even adjusting the plans for 18mm BB-ply that I had on hand, what a champ! 🙂
These are easy to build, not too big and I really like the way it sounds. The cabinet tunig is 42Hz, but to me it reallysound deeper.
For the kind of music I listen to ranging from blues, rock to metal (even some EDM now and then) I can't say that I'm missing anything
in the low end. What I really like about them is how musical it is, no one note bass and really nice sounding upper bass. What's also
to like is how efficient it is and the way it's present from low volume.
I have compare it to the Marty Cube loaded with a Lavoce WAF 154.00 wich is tuned quite a bit lower with an F3 of 27Hz if I remeber correctly.
The Marty is impressive at high volumes and sure it goes lower. But the Lonely TH sound so effortless and musical that for me it's a
no brainer which one to keep. The Paraflex is of course even more efficient than the TH, having two drivers and being double the size,
but the TH still is more HiFi and sound better higher up in the register to me.
Now I only need to build another one! Hope this inspire some one who want to build a great subwoofer.
Here are links to Viktors posts with simulations, measurements and building plans on the German HiFi forum.
Lonely TH15 Pro, simulations and construction plans in english available at the end of the post.
http://www.hifi-forum.de/viewthread-159-11222.html
And here is the regular Lonely TH15, where you can find the simulation and also the real world measurements.
http://www.hifi-forum.de/viewthread-159-11218.html
Easy to build, single row bracing.
From the left Marty Cube, Lonely TH15 Pro, Paraflex Type O 2x15
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It's a regular Tapped Horn model, the internal layout is known as MTH, there are others internal layouts each one with related pros and cons.
Below you can find the other models as well.
https://freeloudspeakerplan.rf.gd/?i=1
Below you can find the other models as well.
https://freeloudspeakerplan.rf.gd/?i=1
Paraflex is tuned lower so it runs into all of that ringing and resonating funk between a bit of out of phase earlier in the higher frequency range maybe?
(After 3 x Fb essentially)
Just asking because I find that such a strange phenomenon that seems to be unique to the Paraflex (folded Bose wave cannon) in the way it stores energy more than the series tuned pipes(??)
(After 3 x Fb essentially)
Just asking because I find that such a strange phenomenon that seems to be unique to the Paraflex (folded Bose wave cannon) in the way it stores energy more than the series tuned pipes(??)
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@Booger weldz I'm afraid I don't have the knowledge to answer that. This is just how I experience it in my room.
The PF worked really good for me when I crossed it at 80hz.
The PF worked really good for me when I crossed it at 80hz.
Viktor made also
a 30Hz tuned TH that use an 8" driver
look here
http://www.hifi-forum.de/viewthread-159-10616.html
a 30Hz tuned TH that use an 8" driver
look here
http://www.hifi-forum.de/viewthread-159-10616.html
Not quite - this layout doesn't have a single expansion along the path like an optimized MTH layout. It seems to have three expansions - one from the closed end up to the last corner before the mouth, then it expands a bit faster there, and then returns to the first expansion.
I'm not sure that three-stage expansion approach produces any audible benefits (if I get the chance, I will modify my MTH spreadsheet just to find out, LOL), but it should drive the F3 up a little.
I tend to prefer the SS type layout, as the internal folding also can act as a brace for the top panel, and the layout can result in a box that elevates any top-mounted speaker a bit more and is also a bit easier to tilt and wheel into place (assuming that you've attached wheels at the bottom corner, of course).
i wonder what REALLY happens in these mini bends/turns regarding actual path length/affective tuning ?
Guys check this 30hrz performance 15inch tapped horn dimensions 44b-62h-75d crossed at 30hz to 90hz LR 24 from DSP my own design.Just don t copy other plans make your own.I have three of them the bass blow you away.Only the three subs cover two tops 15inch with 2inch driver and two 12inch with 2inch drivers.
Well, it looks like there's no way to model something like that in Hornresp, and any Hornresp model that supposedly represents this type of alternate MTH fold is inaccurate.
The issue is the placement of the S3 tap. For the model to be accurate, there should be no changes in expansion along any segment (S1-S2, S2-S3, S3-S4, S4-S5), and in the TH, the location of the following taps are pretty much set, leaving only S3 to define any point at which a change in expansion occurs.
S1 = closed end
S2 = driver front center
S3 = ?
S4 = driver rear center
S5 = mouth.
There's no place in this alternate MTH layout, with its increased expansion around the last corner before the mouth, where S3 can be placed and achieve continuous expansion either along the S2-S3 segment or the S3-S4 segment.
Yes in theory as I did to mod my DIY BWC, though in retrospect, seems like it could be accordion folded such that the two terminus be on the outer sides with one side from the front of the driver and vice versa to get the necessary acoustical pathlength between the two 90 deg sections.
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I’m guessing Like a couple generic pipe shapes that ‘ring’ at several harmonic frequencies with a big resonace ‘cavity’ in between the exits (like a huge paraflex type C)?
(I dunno how we could simulate the distance between the exits in Horn response unless you make it a halfwave length of the entire pipe system?)
Seems the tapered qw pipes avoid this (because they are shorter and reduce in Crossection toward the vent exit?)
I dunno what ‘taped horns’ do to avoid the excessive resonaces? Maybe the appropriate low Qes driver keeps some of that in check? The big mouth/vent exit sure would let it all out though?
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