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The Othorn tapped horn
The Othorn tapped horn
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Old 20th June 2018, 04:50 PM   #441
BP1Fanatic is offline BP1Fanatic  United States
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Wow!
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Old 21st June 2018, 12:21 AM   #442
Brian Steele is offline Brian Steele  Grenada
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Originally Posted by Infinite Audio NZ View Post
We believed it was caused by some kind soul, who thought it would be a good idea to pin trippy lycra fabric to the speakers, covering the port holes.
...TF? Was he on 'shrooms or something when he did this??
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Old 21st June 2018, 12:37 AM   #443
Infinite Audio NZ is offline Infinite Audio NZ  New Zealand
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...TF? Was he on 'shrooms or something when he did this??
Most probably. It was a rave after all
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Old 21st June 2018, 03:22 AM   #444
Brian Steele is offline Brian Steele  Grenada
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Originally Posted by Infinite Audio NZ View Post
Most probably. It was a rave after all
On the bright side, the incident may have proved one of the hypotheses concerned tapped horns - that mounting the driver in the mouth of the horn where particle velocity is greatest does improve the heat dissipation and therefore the thermal power handling of the driver.
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Old 21st June 2018, 08:45 PM   #445
Josh Ricci is offline Josh Ricci  United States
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Dang...Drivers down!
Hard to say exactly what the effects would be, but you would have to assume less air exchange & greater heat buildup in the cabs, loss of some output and possibly even shifting of the loading on the drivers since the air load at the mouth would have changed greatly.

It's safe to say that covering the mouth with fabric at the very least didn't do any favors for those drivers!

Are you reconing the damaged ones?
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Old 22nd June 2018, 04:12 AM   #446
Alch3my is offline Alch3my  United States
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Wanted to chime in on this thread, ordered 4x 21sw152-4s & I'll be grinding for the next week to build 4x Othorns while I am still prototyping some other designs of my own are based on the same driver. Very excited to hear and feel the results after reading through the majority of this thread.

I've debated even building them at all but I really just gotta experience them for myself to add to a growing repertoire of listening impression & understanding.

I'll post a finished update, along with my pissed off my neighbors got, once those are built
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Old 22nd June 2018, 05:12 AM   #447
basreflex is offline basreflex  Spain
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there are watercooling sets available for modding pc's. you could run the pump off the speaker signal using a universal 85-230V ac-in supply. you need to find a way to attach the CPU cooling side to the magnet assembly thermally.
otherwise just use another radiator with fans to remove the heat form the airspace behind the speaker.
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Old 22nd June 2018, 05:13 AM   #448
basreflex is offline basreflex  Spain
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thermal is the penalty for loading a speaker well, less excursion...
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Old 3rd July 2018, 08:03 AM   #449
Alexlel is offline Alexlel  France
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Hi !

Coming back there because my project is getting more concrete !

I plan to build some cabs for 2019 summer, so I'm giving myself 1 year to get enough money for everything.

I kept my idea of getting 2 othorns (for the size and the ~30hz output, it'll be mainly used for reggae and dub music, I want to try something different than scoops) but I'm struggling with my choice of driver.

Ideally I want a speaker which :
- Cost less than 350€, ideally around 300€.
- Can be powered by a Proline 3000 amp.

Would one of those do the job ?

- B&C 18NW100 - 4ohm version | Xmax = 9mm, 316€
- B&C 18TBW100 - 4ohm version | Xmax = 12mm, 335€
- B&C 18RBX100 -4ohm version | Xmax = 10mm, 240€

They are in my price range and the Proline 3000 could run 2 with a bit of headroom in theory (excepted for the 18TBW100).
Two of them have been mentionned in the thread but I can't find any feedbacks

I want to run these as low as possible for that earthquake feeling and up to 65hz-70hz, there will be kick cabs to take over.

Thanks for your time guys, I'm a beginner in this part of the audio world, any advice is welcome.
Alexandre.
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Old 7th July 2018, 08:33 AM   #450
epa is offline epa  Netherlands
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Originally Posted by Alexlel View Post
Hi !


Alexandre.
the tbw works (sims)nice in the othorn.
as for the amp,i always(when possible)take the program power figure as amp power,to get the most out of it.
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