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In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project
Post Subject: Hold your horses!Posted by Romy the Cat on: 10/27/2015
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 Murataltuev wrote:
Now it is clear! Thank you, Romy!Today I auditioned and measured GOTO with closed hole in back chamber. Mid-bass completely disappeared!
With closed back chamber it works efficiently only from 200Hz! So, I'm going to try it in my 200Hz LeCleach.
   
I do not understand what does it mean. Are you saying that you lost bottom response with closed exit hole on the driver back? If with the closed drift from back you have a (loaded!) response  no lower than 200Hz then it is very good. It means that the driver itself has a very tight space on back. You need stop to do it blind and your frequency response measurement is irrelevant. I do not see any need to use the driver in 200Hz horn. You do not think in context of entire system but only in context of your current excitement regarding your dally hypes. Your midbass horn will not do up to 200Hz and if it will then you do not want it to be as it would be too much localizable. So you want the upper bass to be cover with one channel that will be size-manageable and time manageable. It would be 85-120Hz horn. If you do have 200Hz then trash it and stop to buy horn and start thinking. Design system on piece of paper first and do not buy the thing before you know what you are buying. Let pretend that you chose 100Hz horn, then set your Goto drive with Fs around 85-90Hz and begin very slowly to drive the Fs up. Correlate it with what you are hearing BUT give to your at least a month to understand what you hear. From what you are saying now it does not look like you do. Most likely you will need you MF to be up and running at that time. Do not use any tweeter, just run MF (no higher then 9-10) and your upper bass horn and take your time.
 Murataltuev wrote:
Regarding extra inches of LeCleach - in contrast with Tractix this extra inches allows to use this horn right from rate frequency - from 200Hz...looks like allows...I need to experiment to confirm it.
   
I do not think you need La horn as it will be waste of good 5-8” of your vertical space. It is not to mention 200Hz horn that is just a waste of a channel. But it is your system and feel free to do whatever make you happy.
 Murataltuev wrote:
Horns can't produce right super HF, so the only option is RAAL to match horns sensitivity.
Horns can perfectly produce super HF and RAAL, or sensitivity matching is irrelevant. If you multi-amping then sensitivity is not a factor.
 Murataltuev wrote:
Upper bass and mid bass horns must be separated, because upper bass region sounds poor in long mid bass horn.

It not “must be separated”, it might be separated but it has nothing to do with “upper bass region sounds poor in long mid bass horn”. I have no idea why you toss those statements.
 Murataltuev wrote:
5. ULF is needed to cover 30Hz minus region.

You should not be thinking about ULF at this point.
 Murataltuev wrote:
6. Fundamental channel in needed, because using relatively long horn and relatively big and heavy diaphragm for the most loud and dense region of orchestra is not good.
Honestly, I do not know what it was all about.
 Murataltuev wrote:

So, 6 channels at least is the only "right" for me.

You can do whatever you want. 6 channels is a lot of work and of cause it is not “only right”.  As I told you before get Midbass and MF to work together right with whatever section of drivers and horns you want and then I will tell you what to do next. Do not buy anything, do not build any frames, do not strategize anything. Juts make one set of MF and upparbass with regular passive filters and one amp to sound properly.

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