The return of the JBL 2226H parabolic horn

Hi everyone.
I'm new to this forum, and i plan to build a 30 Hz horn with 2226J and drive it with a tube amp that i also planning to build. Live cabinets built right is MY way to go. After i heard the Ocellia Kedros Silver in 2003 i was absolutely stunned. 2 watt of tube amp and it really define what's possible if you are truly up for the match.
 
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Hey there more10, I happen to have roughly 10-16 of these 2226H drivers laying around that I want to incorporate into this design of yours! I downloaded all the files and I've been looking at them in Fusion 360. I have access to a CNC machine and a woodworker as well! I'm actually really excited to see how these sound!

-Seeing as you have actually built at least one of these cabs, are there any tips or things I should know before going into this?

-Is there a voltage limit I should be looking to keep the drivers under, or can I still feed it maximum rated power?

-I've seen your graph showing 4 cabs coupled have extension down to ~25Hz at 130+dB, but I have a hard time seeing if it is actually 25Hz or maybe 30Hz.

I know this is an older thread, but I think this enclosure seems so simple and elegant for a bunch of drivers I already own and want to make better boxes for!
So, thanks for sharing these ideas and I hope to hear from you!
 
You will reach max excursion (for one frequency) at 45V according to Hornresp. For one cab. Multiple cabs cannot easily be simulated, but I believe it will help. You will need a low pass filter to protect the drivers.

When you listen to the built speakers at first you will be a bit dissapointed. This is because we are so used to the distorted bass sound of BR. Just use them for a while and your brain will be trained on the non distorted sound of these.
 
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I currently have 2 other horn loaded subs, so I get what you mean about the difference in sound!
Thanks for letting me know about the voltage, what frequency would you suggest I low pass at? 25Hz, 28Hz? If I couple their horns together and pair them in a group of say, 8, that should lower my extension, correct?
Is there a specific thickness I should use for the wood of the enclosure? Is 18mm ply what you used? Thanks again!
 
If you limit the output to 20 V you are safe. Otherwise put a filter at 30 Hz. Unfortunately I cannot get the Hornresp filter wizard to work.

With 20 V output you will reach 130 dB with 8 horns in paralell.

With 45 V output you will reach 140 dBwith 8 horns in paralell.

18 mm plywood is fine. I don't remember if I built my horn in 16 or 18 mm plywood, I can check next week. I built my horn wilt construction plywood, not birch.

You are in Europe? Otherwise I would have suggested 3/4" 😎
 
Hi everyone.
I'm new to this forum, and i plan to build a 30 Hz horn with 2226J and drive it with a tube amp that i also planning to build. Live cabinets built right is MY way to go. After i heard the Ocellia Kedros Silver in 2003 i was absolutely stunned. 2 watt of tube amp and it really define what's possible if you are truly up for the match.
Did you build something? JBL is known for liking some power.
 
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If you limit the output to 20 V you are safe. Otherwise put a filter at 30 Hz. Unfortunately I cannot get the Hornresp filter wizard to work.

With 20 V output you will reach 130 dB with 8 horns in paralell.

With 45 V output you will reach 140 dBwith 8 horns in paralell.

18 mm plywood is fine. I don't remember if I built my horn in 16 or 18 mm plywood, I can check next week. I built my horn wilt construction plywood, not birch.

You are in Europe? Otherwise I would have suggested 3/4" 😎
I'm in the US, but my boss is from Canada and he insists on using millimeters for all our construction on the CNC 😂 We have a supplier for our usual Baltic Birch, but if I can achieve the same results with cheaper wood, I may just consider it!

Thanks for being so responsive! I'm looking to build these to (hopefully) be able to compete with F1 and Hennessey sound systems, but on a budget!