SynTripP: 2-way 2-part Virtual Single Point Source Horn

hello everybody,
ive got a few questions to the performance and the 3d build.

@MrSpeakers
your 3d designs differs a bit from the original plans
(the runs edges at the phase plug, the port holes)
do they change the sound?
and to what end?

and for what type of music are they suited? are they able to handle live gigs well?
I haven't heard any synergy horns, and I don't know if there are any in my area to listen to (Munich, Germany)

to the building process,
I don't have the tools available to build it with wood, so i want to print it.
I don't have currently to much free time, for calculating and figuring stuff out. because I am in my graduation year, but I have been wanting to build good speakers for a while now
it's really itching me.
takes my concentration away from the school books. gotta change it quick.

greetings,
yet another finn in this topic.
 
Hello @weltersys

you have published 2 plans in this thread the one in #41 and then a folder in #989.
the cad sketches in this folder have different scales than the one in the parts list
In the parts list the horn top & bottom measures 23,125x11,3125x2,3125 with 71,825°
in cad sketch has Horn top & bottom measures 24,500x12,154x2,434 with 71.6°


the other parts also have changes, my question is,
which version is the correct one?

my first guess is, that the grill is "skipped" in the CAD version, but that doesn't explain the angle difference.

an answer would help me alot, thank you,
Greetings,
Finn
 
Hello @weltersys

you have published 2 plans in this thread the one in #41 and then a folder in #989.
the other parts also have changes, my question is,
which version is the correct one?

Finn,

The plans of what I designed, built and tested are in post #41.

I have not checked the accuracy of the cad sketches linked in #989, nor would I be thrilled about using the SynTripP without the grill and secondary horn, but users seem to have done away with both more often than not.

Art
 
hello everybody,
ive got a few questions to the performance and the 3d build.

@MrSpeakers
your 3d designs differs a bit from the original plans
(the runs edges at the phase plug, the port holes)
do they change the sound?
and to what end?

and for what type of music are they suited? are they able to handle live gigs well?
I haven't heard any synergy horns, and I don't know if there are any in my area to listen to (Munich, Germany)

to the building process,
I don't have the tools available to build it with wood, so i want to print it.
I don't have currently to much free time, for calculating and figuring stuff out. because I am in my graduation year, but I have been wanting to build good speakers for a while now
it's really itching me.
takes my concentration away from the school books. gotta change it quick.

greetings,
yet another finn in this topic.
Hi, I am also in the process of reproducing these tops.
However, as I am half blind, it takes me a little longer to create the CAD for it, precisely because there are so many different plans and the hand drawings are very difficult for me to read.

I have the possibility to have the parts milled on a CNC.
If I'm not too late, I could build 4 of these for us.

greetings from Stuttgart
Liro
 
Hi everybody,

I already saw a couple of 3d printed syntripps in here already and I'm thinking of printing some myself. I know using wood would probably be much easier but I wanted to do something like this for a while anyway so here we go.

Can anyone here that printed them recommend me good settings (how much infill etc.). maybe @MrSpeakers ?

Also I have a question for @weltersys . Can you recommend me some alternative drivers that would work well for the syntripps? It seems the Celestion CDX14-3050 is not easily available in my country right now. any help would be much appreciated 🙂
 
Hi everybody,

I already saw a couple of 3d printed syntripps in here already and I'm thinking of printing some myself. I know using wood would probably be much easier but I wanted to do something like this for a while anyway so here we go.

Can anyone here that printed them recommend me good settings (how much infill etc.). maybe @MrSpeakers ?

Also I have a question for @weltersys . Can you recommend me some alternative drivers that would work well for the syntripps? It seems the Celestion CDX14-3050 is not easily available in my country right now. any help would be much appreciated 🙂
You just have to read.

Posts around #729 have alternate HF driver options. Posts 897, 898, & 914 go into details of the throat adapter plate and attachment.
I'm not ordained, so no blessings shall be issued ;^)

There are many ceramic magnet 1.5"/1.4" exit 3" diaphragm drivers that will work well in the SynTripP if weight is not a concern, like the B&C DE82TN, B&C DE90TN, DE700TN, DE750TN.
For neo drivers, the Eminence N314T seems OK, though output is not great on the low end of the crossover range which could be a problem at high output levels.
The B&C DE820TN and DE920TN look good.

There are probably drivers from Faital Pro, 18Sound, and Radian that could fill the bill too- look for 3" diaphragm units with response from 500-18,000Hz with smooth response.

@wLiro hi, thats awsome, can you send me a private message.
I guess I'm too new to the community to have the rights to this.
send an email to w_liro@web.de
 
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Hello everyone, hello Art. Hello Mods, this is my first post I hope it's all good.
I have been lurking on this post ever since I saw @samdboneff 's post on reddit so almost two years now.

I'm very thankful this exists.

I'm a student woodworker in europe, and I'm in a lucky position where I can build these speakers whilst being paid. There's this one class where we choose our project, so I'm killing two birds with one stone and getting a good grade and new speakers. I've got about a year and a half to make these.
I'm going to collaborate with my local fablab for 3D printing, CNCing and even lazer cutting if needed. They even have a fancy handheld shaper router/CNC thingy.
I can make a barn door and I can make basic furniture, but the world of automated woodcutting is a bit of a mystery. I'm eager to learn.
I'm going to write a report (in french, but I'll translate it) that will detail my build process. I'm hoping it'll be of value to someone at some point.

I have read through the whole thread over the past few days. Well, I should say, I read the first few sentences or words of each post to see if it was of interest to me. I have a serious case of woodworker brain at this point, and I can't say I understand more than 20% of the measurement graphs and protocols. I've got Davis and Patronis' Sound System Engineering book and it scares me.

I have compiled all (most of) the build pics and all (most of) the various plan iterations I could find into a single Gdrive, link below.
I just wanted to clear things up in a single post, so as not to discourage people who don't have the time or energy to go through what? 7 years of posts?
I'm not mentioning everyone who built them, I'm going to focus on just a few of the more documented builds.

So if I'm not mistaken, the process for getting definitive clean computer drawn metric plans has gone as such:

1) There was a development thread where Art & Co. designed a speaker to fit 10 criteria detailed in post#1 (I have not read the development thread)

2) Art built them and measured their audio specs, produced photos

3) This thread was created, @weltersys uploaded his plans and photos, his original concept and building process. see post #1 He directs to all posts that answer frequently asked questions.

4) @FinBot built 4 syntriPs. He produced PDF plans in inches that Art didn't approve, something wasn't symetrical (post #443). He produced a sketchup file for the cone plug. He later posted a Gdrive that I have not been able to access (post #132), I'm guessing it contains a sketchup model, as he has posted screenshots of a sweet looking model (post #121). Kaironex Audio is the author of the sketchup model you find first in google if you search "syntrip sketchup", post #732 . There was a problem with the file hosting on github for fin's sketchup file.
Fin had trouble with the throat, since Art had made his using a file and sandpaper wrapped around a tube.
He later reposted the pdf plan and cone plug.

5) JennyGirl gets her hands on that google drive I can't access. She uses autodesk to make her own, specifically for the throat adapter, but keeps using sketchup for general assembly. There is lots of work done on getting the throat adapter correct (around post 250 then 383)
"It is impossible to make a smooth transition from rectangle to circle in a .5" throat adapter in both mine and Fin's model... He (Finbot) said he had to make it with a bit of an S-curve because the throat entrance width was too wide for a smooth transition."
So JennyGirl managed to find a compromise and started building, lots of cool photos ensued.
The cone plug was 3D printed and it's volume was debated, ended up being 210cc if I'm not mistaken.
post#391 for Jenny's google drive

6) The diyAudio hive mind then decides that it should ask Art if every single driver in existence would fit in his cabinet, and if he ever intends to build a passive crossover. That got really boring really fast, the man has patience.
Here is a useful link for driver comparisons : http://www.loudspeakerdatabase.com/

7) Mr Speakers (post #779). He 3D printed the whole horn with MDF enclosures. in post #826 he delivers the solidworks files.
I have yet to understand if the files allow to draw up a cutsheet by themselves, although I think such a document was posted by Art, but in imperial.

8) Pyronius builds his Syntrips around post #887 , he revisits the throat adapter, and uses Jennygirl's cone plug measurements. He does not post source files for his work?

9) ab01ns gets plans from pyronius and starts banging them out, says she will release a drawing package with art's approval. She got the throat design from a reddit user.

I... I am overlooking SO. MUCH. data.
There's at least 10 other builds out there, I just didn't get to them because I'm too focused on my own project but everything looks absolutely dope and you're all beautifully competent.

So, basically we don't yet have "a" plan. There's like 6 out there. If you're like me and want to explore all these files, you'll need sketchup (free on their website but they'll try and get you to buy it), autodesk fusion 360 which you can also get for free iirc, and solidworks. You can get solidworks for free if you're a student, or get a trial version and hurry to get what you need. (side note : Dassault Systemes who make solidworks are not the kindest company to say the least, so it might go against your ethics to give them money.)

Well, we do have "a" plan, Art's of course. I suppose one should start by redrawing it for themself!
He also, at some point, recommends a google drive link. It is included in the drive link below. It contains most everything in 2D.

I hope i haven't misinterpreted too much and that my tone is appropriate, I feel some sort of pressure after having read everyone for such a long time and finally posting.

Here's the drive
https://drive.google.com/drive/folders/1Uc8v5Qk3jz8snis_ovhLCcN1j12PVRWf?usp=sharing
I have put it in read only, I hope it allows people to dowload items without being able to delete them, I'm not sure. If you have plans or photos I'll be glad to add them.

Anyway I hope you all have a nice end of year, I'm going to keep digging and hopefully drawing soon!
 
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Hello everyone, hello Art. Hello Mods, this is my first post I hope it's all good.
I have been lurking on this post ever since I saw @samdboneff 's post on reddit so almost two years now.

I'm very thankful this exists.

I'm a student woodworker in europe, and I'm in a lucky position where I can build these speakers whilst being paid. There's this one class where we choose our project, so I'm killing two birds with one stone and getting a good grade and new speakers. I've got about a year and a half to make these.
I'm going to collaborate with my local fablab for 3D printing, CNCing and even lazer cutting if needed. They even have a fancy handheld shaper router/CNC thingy.
I can make a barn door and I can make basic furniture, but the world of automated woodcutting is a bit of a mystery. I'm eager to learn.
I'm going to write a report (in french, but I'll translate it) that will detail my build process. I'm hoping it'll be of value to someone at some point.

I have read through the whole thread over the past few days. Well, I should say, I read the first few sentences or words of each post to see if it was of interest to me. I have a serious case of woodworker brain at this point, and I can't say I understand more than 20% of the measurement graphs and protocols. I've got Davis and Patronis' Sound System Engineering book and it scares me.

I have compiled all (most of) the build pics and all (most of) the various plan iterations I could find into a single Gdrive, link below.
I just wanted to clear things up in a single post, so as not to discourage people who don't have the time or energy to go through what? 7 years of posts?
I'm not mentioning everyone who built them, I'm going to focus on just a few of the more documented builds.

So if I'm not mistaken, the process for getting definitive clean computer drawn metric plans has gone as such:

1) There was a development thread where Art & Co. designed a speaker to fit 10 criteria detailed in post#1 (I have not read the development thread)

2) Art built them and measured their audio specs, produced photos

3) This thread was created, @weltersys uploaded his plans and photos, his original concept and building process. see post #1 He directs to all posts that answer frequently asked questions.

4) @FinBot built 4 syntriPs. He produced PDF plans in inches that Art didn't approve, something wasn't symetrical (post #443). He produced a sketchup file for the cone plug. He later posted a Gdrive that I have not been able to access (post #132), I'm guessing it contains a sketchup model, as he has posted screenshots of a sweet looking model (post #121). Kaironex Audio is the author of the sketchup model you find first in google if you search "syntrip sketchup", post #732 . There was a problem with the file hosting on github for fin's sketchup file.
Fin had trouble with the throat, since Art had made his using a file and sandpaper wrapped around a tube.
He later reposted the pdf plan and cone plug.

5) JennyGirl gets her hands on that google drive I can't access. She uses autodesk to make her own, specifically for the throat adapter, but keeps using sketchup for general assembly. There is lots of work done on getting the throat adapter correct (around post 250 then 383)
"It is impossible to make a smooth transition from rectangle to circle in a .5" throat adapter in both mine and Fin's model... He (Finbot) said he had to make it with a bit of an S-curve because the throat entrance width was too wide for a smooth transition."
So JennyGirl managed to find a compromise and started building, lots of cool photos ensued.
The cone plug was 3D printed and it's volume was debated, ended up being 210cc if I'm not mistaken.
post#391 for Jenny's google drive

6) The diyAudio hive mind then decides that it should ask Art if every single driver in existence would fit in his cabinet, and if he ever intends to build a passive crossover. That got really boring really fast, the man has patience.
Here is a useful link for driver comparisons : http://www.loudspeakerdatabase.com/

7) Mr Speakers (post #779). He 3D printed the whole horn with MDF enclosures. in post #826 he delivers the solidworks files.
I have yet to understand if the files allow to draw up a cutsheet by themselves, although I think such a document was posted by Art, but in imperial.

8) Pyronius builds his Syntrips around post #887 , he revisits the throat adapter, and uses Jennygirl's cone plug measurements. He does not post source files for his work?

9) ab01ns gets plans from pyronius and starts banging them out, says she will release a drawing package with art's approval. She got the throat design from a reddit user.

I... I am overlooking SO. MUCH. data.
There's at least 10 other builds out there, I just didn't get to them because I'm too focused on my own project but everything looks absolutely dope and you're all beautifully competent.

So, basically we don't yet have "a" plan. There's like 6 out there. If you're like me and want to explore all these files, you'll need sketchup (free on their website but they'll try and get you to buy it), autodesk fusion 360 which you can also get for free iirc, and solidworks. You can get solidworks for free if you're a student, or get a trial version and hurry to get what you need. (side note : Dassault Systemes who make solidworks are not the kindest company to say the least, so it might go against your ethics to give them money.)

Well, we do have "a" plan, Art's of course. I suppose one should start by redrawing it for themself!
He also, at some point, recommends a google drive link. It is included in the drive link below. It contains most everything in 2D.

I hope i haven't misinterpreted too much and that my tone is appropriate, I feel some sort of pressure after having read everyone for such a long time and finally posting.

Here's the drive
https://drive.google.com/drive/folders/1Uc8v5Qk3jz8snis_ovhLCcN1j12PVRWf?usp=sharing
I have put it in read only, I hope it allows people to dowload items without being able to delete them, I'm not sure. If you have plans or photos I'll be glad to add them.

Anyway I hope you all have a nice end of year, I'm going to keep digging and hopefully drawing soon!
Thats what i´m working on.
and the rack with amps and RME interface for measurements is allrey ready for the test.
 
Finally finished up the horn extensions. Only grills left to make for the keystones and SyntripPs.

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hello everybody,
ive got a few questions to the performance and the 3d build.

@MrSpeakers
your 3d designs differs a bit from the original plans
(the runs edges at the phase plug, the port holes)
do they change the sound?
and to what end?

and for what type of music are they suited? are they able to handle live gigs well?
I haven't heard any synergy horns, and I don't know if there are any in my area to listen to (Munich, Germany)

to the building process,
I don't have the tools available to build it with wood, so i want to print it.
I don't have currently to much free time, for calculating and figuring stuff out. because I am in my graduation year, but I have been wanting to build good speakers for a while now
it's really itching me.
takes my concentration away from the school books. gotta change it quick.

greetings,
yet another finn in this topic.
Hi, we weren't able to do a direct compare to Art's wood parts, but the measurements appeared similar pre-DSP.

We modified the ports in particular to remove 90 degree edges that to our minds might cause a bit of diffraction but that said this was an untested idea. We didn't note anything negative about it, system performance was very good.

The limiting factor in our setup are the 10" drivers, even with the secondary horn the amount of DSP to blend with the subs pushes the 10" to the limit, both in amp headroom and Xmax. A 3m secondary horn would solve that! Maybe for someone doing a club installation that could actually make sense, or integrating the horn into a stage design...
 
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Hey @weltersys and thank you (and everybody else) for a most intriguing thread I have been reading for a few months. This forum and thread has kind of reaffirmed that there is actually hope for mankind's ability to be kind after all 🙂

I am planning to build a pair of Syntripps for the upcoming summer outdoor festivals 50-200 people to increase overall quality and equal sound across the dance floor. Syntripps seems good for these goals?

I am used to running 4-6x mixed 15" tops from behringer and thomann along with either 2-4x 18" vented t-box or 2x double 18" synq rs-218b horn subs.

The music played are mostly deep tech, tech house, techno, minimal techno and progressive psytrance with the occasional DnB. We are all suckers for the subliminal but pronounced low rhythm sounds not being bass or kick and I am scared of having a lack of that pairing Syntripps with the Synq RS218B and eventually / perhaps the keystones. Take the Hz from a non professional but would it be easy to complement the setup with speakers playing from the sub crossover to 300-400hz if you find yourself in need?

Thanks again! Awaiting possible drawings from @ab01ns before making my own. 3d print calculated 380 hrs print time and $500 in material for my price so wood it is! 🙂
 
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Hello! Thank you Art for sharing this really cool design and everyone else for all contributions in this thread, which I've read all of in detail.

I'm in the process of CNC-routing the throat adapter plate. As I understand it, the adapter is designed specifically for the exit angle of the compression driver. The original design of the throat adapter is based on the Celestion CDX14-3050 and unless I'm using the CDX14-3050 I will have to modify the throat adapter.

If I were to use the B&C DE90TN, the throat adapter will have to be adjusted to the exit angle of that particular driver (unless they have the same exit angle).

Carl
 
I am planning to build a pair of Syntripps for the upcoming summer outdoor festivals 50-200 people to increase overall quality and equal sound across the dance floor. Syntripps seems good for these goals?

I am used to running 4-6x mixed 15" tops from behringer and thomann along with either 2-4x 18" vented t-box or 2x double 18" synq rs-218b horn subs.
If you are using four 15" tops as a comparison, you probably will be underwhelmed by the output of a pair of SynTripP in the 100 Hz range. I'm not a fan of adding a different mid bass to the set up, if you want more output than a 2x10" cabinet, you should go with something louder, like Peter Morris PM90 or PM 60 designs.
https://soundforums.net/community/forums/diy-audio.28/

That said, for 50-200 people, using four 18" bass reflex or a pair of Keystones, a pair of SynTripP probably would keep up for genres with most of the energy below 100 Hz.

Art