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: Mid-bass horn integrationPosted by Murataltuev on: 10/21/2015

Romy the Cat wrote:

Well, you need to define what does it mean “can't operate”? Anything can operate anywhere and everything will produce some kind of sound. The point is that you would like a horn operate it is max capacity and a driver to be properly loaded. Only in that condition a driver and horn do not operate faulty (like most of the horns out there do). In case you have a relatively low rate horn you want a horn resonance to be loaded by the mass of air in the horn, or to be “close” to what they call throat reactance. “Close” is a very loaded statement. To have it within a fraction or DB or within a whole DB very much impact sound but in your case you will have an octave or more away. So, can let say 30Hz driver to operate in 300Hz horn? Yes it can but there you need to play only corny piano concertos on YouTube and it will produce questionable sound. Again, there is tone of information at this site regarding the subject.

Can you suggest the thread to read about it ? So, how many octaves from fs will be loaded properly ?

Ok, there is nothing wrong with that. A 4” of driver exit into 50hz… hm… It will be good 10-12 feet horn. If your room and your integration methods could accommodate it them good for you. Again, I do suggest you forget for now about your midbass horn and built a normal horn tower with upper bass horn. You will learn about proper integration techniques and THEN will be able to understand a lot about the midbass horns complexity. At this point you do not know what you are asking and in my estimate to go after 40Hz integrated horn would be bit difficult for you and you do not exactly know what you do and what you hear.

Ok, regarding upper bass horn, keeping myself in compression driver only concept I'll try JBL2490 in 200Hz LeCleach and WE555 in GOTO's horn dedicated for SG-505 (I have it also). I'm also thinking to order 110Hz Tractix from Lukasz (http://horns-diy.pl/horns/tractrix/tractrix-110/) and try GOTO 146 in it.I will post my findings after evaluation.Romy, I think it is Ok, that I'm not just copying what you did, but looking for other options.But general concept is trully yours! Mutichannel time-aligned horn system was invented by you, I believe!

BTW, the best midbass from playback in my life I heard not from compression driver but from other topology.

This is very interesting! What other technology exists for bass ?

I do not think I am trying to convince you anything besides advising you do not insist to educate me. Honesty this attitude will not bring you traction or attention. Are you trying to advise me to get rid my upperbass and midbass solution sand start experimenting with GOTO 146? Sorry, if you are absolutely clueless what you are proposing.

Definately I'm not educating you. I just very much impressed with difference in sound reproduction between Supravox and GOTO and now creating some theory about it. But you are right, that I have not much experience to be sure that any GOTO like driver is better than any Supravox like. Can you suggest any speaker to listen and evaluate proper bass implementation? Cessaro Gamma is OK ? Like you have standand compression driver sound which is OK (JBL2440), can you suggest the same standard bass sound ? I'm just interesting to learn what is your reference in bass reproduction.

Hm, it took for you 30 seconds to be convinced regarding the time-alignment. I wish you good luck but I have my heavy doubts that at this point you will come up with anything noble. Again, take your time, do more own experiment and less audio-forum posting - you migh end up with something good accidently.

Thank you, Romy. I appreciate your attention to my project very much. Do you think that this idea of integrating mid-bass horn in my room (6x6m) is terrible ?

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