Acoustic Horn Design – The Easy Way (Ath4)

Hi @kodomo,

Nylon easily absorbs humidity.
If you don't have already do this, you could check this steps:
  • Drying the parts in an oven, maybe few hours at low temp like 50° celsius. Be aware of a potential shrinkage. Measuring the throat hourly.
  • Cleaning with isopropyl alcohol
  • Sanding the surfaces
  • Cleaning again
  • Quick drying with an hairdryer

Is the glue good, not too old ?
Are the 2 parts mixed correctly?
It's possible to pour the glue in a cup to see the quantity and mix by hand
Thank you very much.

I cleaned them with iso, resand the surfaces, cleaned and quickly dried with a heat gun.

The glue is new and I am using its own mixer. I applied and waited 24h.

Today I put them together and they seem to hold (for now). I am waiting for 24h like this and then I will put some stress on them to see/hear if anything is happening.
 

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Does the top phase plug come together all in one piece with the troath?
I don't know what do you mean by "with the troath", but no, there's supposed to be a gap between the ring inserts and the flange - see Fig. 9 here: https://www.at-horns.eu/gen2-4554.html

BTW, all the three parts were intended to be printed separately. I'm not sure there's any advantage in doing it otherwise.
 
I don't know what do you mean by "with the troath", but no, there's supposed to be a gap between the ring inserts and the flange - see Fig. 9 here: https://www.at-horns.eu/gen2-4554.html

BTW, all the three parts were intended to be printed separately. I'm not sure there's any advantage in doing it otherwise.
ah ok mabat, i will try again later, i did open the file and it was already on top of it i don't know why! thanks!
 
oh yeah just measured out my time alignment and the old tweeter was at 17.7cm back and the new horn has it at 4 cm back from the baffle. So that probably explains why the imagining is gone.

time align your **** folks makes a huge difference! (obviously very easy to do with the hypex plate amps)
 
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oh yeah just measured out my time alignment and the old tweeter was at 17.7cm back and the new horn has it at 4 cm back from the baffle. So that probably explains why the imagining is gone.

time align your **** folks makes a huge difference! (obviously very easy to do with the hypex plate amps)
Do you realize that you will need whole new crossover filters to make it work properly? 🙂
It's not just "time alignment"...actually far from that.
 
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