Hi, I have a large 150 Hz tractrix horn and I have considered whether it is possible to create a type of MEH out of it.
I would require a coax unit with a centrally mounted horn. This would create a band pass channel going from the lip of the horn to the cone of the speaker.
Can anyone please recommend a suitable coax speaker?
I would require a coax unit with a centrally mounted horn. This would create a band pass channel going from the lip of the horn to the cone of the speaker.
Can anyone please recommend a suitable coax speaker?

Check out Danley Sound Labs. He does this very thing with a 5" BMS coax.
Yeah, but it is a shallow horn with a coax where the cone is the horn. I'm looking for a driver with separate tweeter horn.
Best,
Kris
Your going to get an awful polar pattern with this. And it will likely sound terrible because of all the diffraction caused by the midrange bending around the high frequency horn. Also, it's unlikely that your going to find a coaxial that has a tweeter with a polar reponse which will match up well with the tractix horn. its probably going to be something a bit more conventional
Hi Patrick,
Thanks. I was hoping you would weigh in on this thread.
Can you recommend a coax driver with a detachable horn? Does such a creature exist?
Best, Kris
Thanks. I was hoping you would weigh in on this thread.
Can you recommend a coax driver with a detachable horn? Does such a creature exist?
Best, Kris
If you look at the SM80F:
SM80F | Danley Sound Labs, Inc.
that's a similar idea with a coax that is using the cone as a waveguide. The plastic moulding is increasing the depth and mouth size of the cone.
Another product that is a bit simlar in idea is the Soundgear Orbit 4 where the tweeter horn and driver are also a phase plug for the mid:
Soundgear - Speakers - Amplifiers - DSP
(they sound great btw)
* I also had the idea for a bigger version of the orbit 4 with a B&C closed back midrange and woofers mounted synergy style... however I don't need that kind of output yet.
SM80F | Danley Sound Labs, Inc.
that's a similar idea with a coax that is using the cone as a waveguide. The plastic moulding is increasing the depth and mouth size of the cone.
Another product that is a bit simlar in idea is the Soundgear Orbit 4 where the tweeter horn and driver are also a phase plug for the mid:
Soundgear - Speakers - Amplifiers - DSP
(they sound great btw)
* I also had the idea for a bigger version of the orbit 4 with a B&C closed back midrange and woofers mounted synergy style... however I don't need that kind of output yet.
Interesting speakers there at Soundgear.
I suppose I should drop them a line to tell them they've goofed on the website.

An early version of the design was entered into a Celestion design contest:
https://celestion.com/speakerworld/downloads/patech/99.pdf
They are quite narrow dispersion speakers so most people run a pair per side as a cluster.
https://celestion.com/speakerworld/downloads/patech/99.pdf
They are quite narrow dispersion speakers so most people run a pair per side as a cluster.
If you look at the SM80F:
SM80F | Danley Sound Labs, Inc.
that's a similar idea with a coax that is using the cone as a waveguide. The plastic moulding is increasing the depth and mouth size of the cone.
Another product that is a bit simlar in idea is the Soundgear Orbit 4 where the tweeter horn and driver are also a phase plug for the mid:
Soundgear - Speakers - Amplifiers - DSP
(they sound great btw)
* I also had the idea for a bigger version of the orbit 4 with a B&C closed back midrange and woofers mounted synergy style... however I don't need that kind of output yet.
Thanks Kipman,
"the tweeter horn and driver are also a phase plug for the mid" is exactly what I am after.
Interesting speaker that Orbit 4.
Hasselbaink, definitely interested in where this thread goes...
I know it's not what you're after, but here's an older project I still have going, in the same vein as the SM-80 etc....ie a coax with a horn to aid the cone output...my goal was to make an SM-80 that digs lower.
...need to change the foam horn rings .. i believe i should widen their angle, which now matches the angle of the cone... cause so far it's been better without the foam rings. B&C 15cxn.
I don't think these boxes are true synergies...but what you're thinking about is, afaict
I know it's not what you're after, but here's an older project I still have going, in the same vein as the SM-80 etc....ie a coax with a horn to aid the cone output...my goal was to make an SM-80 that digs lower.
...need to change the foam horn rings .. i believe i should widen their angle, which now matches the angle of the cone... cause so far it's been better without the foam rings. B&C 15cxn.
I don't think these boxes are true synergies...but what you're thinking about is, afaict
Attachments
Hi Patrick,
Thanks. I was hoping you would weigh in on this thread.
Can you recommend a coax driver with a detachable horn? Does such a creature exist?
Best, Kris
You'd have to 3D print it.
For a studio 1 copy, I’m pretty sure this is the unit that Danley uses.
LOUDSPEAKER 6"CX200Nd/N 8 OH
The horn flare and look of it match.
LOUDSPEAKER 6"CX200Nd/N 8 OH
The horn flare and look of it match.
If you look at the SM80F:
SM80F | Danley Sound Labs, Inc.
that's a similar idea with a coax that is using the cone as a waveguide. The plastic moulding is increasing the depth and mouth size of the cone.
Another product that is a bit simlar in idea is the Soundgear Orbit 4 where the tweeter horn and driver are also a phase plug for the mid:
Soundgear - Speakers - Amplifiers - DSP
(they sound great btw)
* I also had the idea for a bigger version of the orbit 4 with a B&C closed back midrange and woofers mounted synergy style... however I don't need that kind of output yet.
Thanks Ernie,
This driver looks awesome! Wonder where I could buy it?
Best,
Kris
It looks nice - they have a distributor page, so maybe you find one that could supply it: Distributors
Thanks for the link !An early version of the design was entered into a Celestion design contest:
https://celestion.com/speakerworld/downloads/patech/99.pdf
They are quite narrow dispersion speakers so most people run a pair per side as a cluster.
🙂
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