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Old 13th July 2013, 11:08 PM   #21
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Scott,
I understand what you are saying about the height of the A7 or the Ubangi. I don't see any reason that a Ubangi type enclosure could not be done with a single 15" speaker, you would just delete the center divider section and scale it for the single 15". I see your design you have left off the port section and I am in agreement with that, I know others have commented on the same thing. If you ever look at one of the earlier Eastern Acoustics Works, EAW. enclosures this is what they were known for.
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Old 15th July 2013, 03:59 PM   #22
Pano is offline Pano  United States
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Quote:
Originally Posted by Kindhornman View Post
About 1978 I introduced 10" midrange cone driven radial horns for professional audio that was directed at the problems of going from a 15" cone to a compression driver.
I also like the horn loaded 10" for midrange - works great.

However it doesn't seem necessary at the power levels used for home Hi-Fi. Going from a 15" to a 1.4" compression driver a tiny powers isn't hard. Or 12" to 1". It's when you have to fill large spaces that the 10" mid comes in handy.
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Old 15th July 2013, 04:17 PM   #23
Rewind is offline Rewind  Sweden
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I need detailed midrangem which excludes large cone drivers. It is the most fun range to me, who like jazz and slow music.
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Old 15th July 2013, 05:02 PM   #24
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Pano and Rewind,
That is the reason that I developed the 6 1/2" small format mid horn. I originally did this for floor monitors that had a single 15" or 12" and a single 1" compression driver. The sound was much improved in the critical midrange for vocal monitoring in a live situation. One of the secondary benefits was that feedback through the mics was much reduced also and a higher level was achievable before this problem reared it ugly head.
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Old 16th July 2013, 01:25 AM   #25
Pano is offline Pano  United States
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6.5" horn loaded cone?
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Old 16th July 2013, 01:33 AM   #26
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Yes Pano,
A 6 1/2" cone driven horn. Works real nice to fill in that area above a 15" and below a 1" compression driver.
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Old 16th July 2013, 08:38 AM   #27
Rewind is offline Rewind  Sweden
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What driver was it and how did it look like? I see a lot of cones in horns from the states and more compression driver horns in Europe. Personally I dont feel a cone driver has much interesting to be played in a horn. I will however try to hornload a greencone.
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Old 16th July 2013, 09:48 AM   #28
Radian is offline Radian  Germany
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I don't understand what's so hard about a little deductive reasoning.
1. There is something about using compression drivers in the low region that fascinates people, if it is done right.
2. Many four inch diaphragm drivers like the Radian 950 reportedly did not cut it. (Fane 8" was still better)
3. WE555 on WE15A is a combination that does so well even to under 100hz that no one seems to forget the experience.
4. The K55/Atlas drivers are identical to the WE555 on all the relevant points to get it to the performance of the WE
5: A guy in Germany has gotten the K55 to WE555 level and has done all the R&D for us to just copy it cheaply
6. "constant directivity" horns like the later Econo-Wave designs by Seos sound better from about 1khz up then
many/most/all? Tractrix iterations.
7. Put 1 and 1 together and let each driver/horn combination do what it does best.
8. Enjoy your 3 way system until the market has actually brought fourth the affordable compression driver
that beats the modified cheap K55.
9: Be creative. There are many horn contours up to 1khz that sound good if done right: Exponential, hyperbolic, tractrix, conical.
10. If possible use very good open baffle cone speakers like Saba Greencones (level matched) to evaluate your under1khz horn.
Only if the horn turned out really, really, good it can match such a design.
Sometimes I wonder if I really need a horn from 80hz to 1khz after hearing what the Saba's can do in that range.
The tone, speed and transient response is just fantastic. 95 db spl is just not efficient enough to match the dynamics of the CD Horn.
A stack of 4 Saba's could work but I don't want to spend another 200 Euro to find out that it doesn't work well.
If anybody has experience with multiple drivers below about 1khz please let me know.

Klaus
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Old 16th July 2013, 11:31 AM   #29
3GGG is offline 3GGG  Australia
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Radian, Can you please provide a link to "the guy in Germany" who has converted the K55.
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Old 16th July 2013, 01:48 PM   #30
Radian is offline Radian  Germany
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Originally Posted by 3GGG View Post
Radian, Can you please provide a link to "the guy in Germany" who has converted the K55.
I am so sorry I have seen that you basically ask me two times for information
and I did not answer.

I will send you a PM with his email. I hope he dosn't mind. His english seems to
be good as he answered a few questions in the Sato and in the WE thread that
where ask in English.

Klaus
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