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In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project
Post Subject: OK, good luck.Posted by Romy the Cat on: 10/27/2015
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 Murataltuev wrote:
Yes, back chamber is very small. And it is tunable! So, I need 110Hz Tractrix...ok

You might tune the Fs by using a acoustically semitransparent fabric, like Audiotechnica does in their headphones. About the size and type of upperbass horn you need... I do not know it is a complicated subject. The upperbass horn is a main horn of your playback, sonically and esthetically. You have no limitation of driver and you can pretty much chose any cut off horn frequency you want. It might be 120, 100 or 80... it might be anything. There is so many factors to consider before making this judgment....
 Murataltuev wrote:
The thing is that HornResp shows almost similar (even better for LeCleach) response below 200Hz for 110Hz Tractrix and 200Hz LeCleach.I can't ignore it at my current state of understanding things, so I'm going to try 200Hz LeCleach to see what I can have from it.
So, you will have a presumably 100H upperbass and 200Hz MF. It is very reticular. Also, please DO NOT USE the fucking word HornResp in front of me. One more time I will hear and it will be the last time you heard from me.
 Murataltuev wrote:
I'm not multi-amping at this stage. And I really don't feel right super HF from horn and like what I got from RAAL. Horns super HF are heavy and agressive, I would say...and violin sound is simplified with lack of thin nuances. Without RAAL I don't feel that violin sounds true.
You are wrong about it but it is irrelevant as there is absolutely unnecessary for you at this point to worry about tweeter.
 Murataltuev wrote:
I believe, that smaller weight and smaller excursion brings better sound. Why I want my Fundamental channel's sound to be produced with big and heavy diaphragm ? Of course I need something special for this range.
Actually it is incorrect. The requirement to Fundamental channel is not subordinate to this logic. I do not think you should worry about it now.
 Murataltuev wrote:
Ok. I'll make upper-bass and MF to work together.Now this is my 1st priority.
That is OK. I do feel that you might find a need to change your JBL MF but do not do it yet. Also, you drive everything with one GM70. I do not know if it is good amp but if it is then I would give you VERY high probability that you will need to drive MF and Upperbass with different load. If you amp has multiple taps then you will need to use them (hopefully your transformer was winded properly with full length filling for each tap)

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