GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project

Post Subject: 1st priority: Upperbass and MFPosted by Murataltuev on: 10/27/2015

Romy the Cat wrote:

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.

Yes, back chamber is very small. And it is tunable! So, I need 110Hz Tractrix...ok.

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.

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.

Horns can perfectly produce super HF and RAAL, or sensitivity matching is irrelevant. If you multi-amping then sensitivity is not a factor.

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.

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.

May be it is a result of my exact experiment. Upper bass region in my exact mid-bass horn sounds like driver is not loaded, so sound comes from cask...poor and colored.

You should not be thinking about ULF at this point.

I agree. I don't care about ULF now.

Honestly, I do not know what it was all about.

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.

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.

Ok. I'll make upper-bass and MF to work together.Now this is my 1st priority.

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