GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Problems with horns: upper bass

Post Subject: The speed of the profile for upperbass hormPosted by Romy the Cat on: 8/1/2009

Come on, Dominik, no one cares about the LeCleach for bass.

You might consider slower opening profile: like exponential of hyperbolic. Exponential will give you a bit more horn gain at bottom and hyperbolic will give you even more gain. Hyperbolic would allow you to go even a bit below the mouth rate. If you are not willing to go too high with your upperbass horn then it might be an option to exercise. The disadvantage is that slower opening profile are a bit longer and you need to look yours of you will be able to integrate the horn with MF in your room. Also, the sound. With 100Hz Tractrix it is very difficult to get problem with sound from your upperbass. With slower profile you need to be VERY accurate, very informed and very sensible what you do as stressing the slower profile too much would throw the horn into sonic mess. Put in this way: with 100Hz Tractrix you get out of the horn all bass that you can take and you very little worry about consequence. With slower profile and particularly the hyperbolic you need to very tuneful to how locate the beast, how to crossover/EQ it and how much you would allow the horn to use its own full gain.

This is the problem with most of the installations with exponential of hyperbolic horns. The Morons always try to get more bass from their upperbass horns but slower profiles requires way more sensible and more surgical views about sound then juts flooding the horn with lower octave as most of fools do. Dominik, I understand that it might implant an ambiguity to you soil and it is not what you need now. I just lay out for you options and it is your decision what to do. If I go for my 40Hz horn then it will be slow profile. Probably the same would be for 80Hz horn. The 170Hz horn I would go for Tractrix but the 115Hz, if I do it again? I do not know the answer. I know that if I done everything properly then any profile in my room I will be able to make to have right Sound because I know what and how to listen and I know how to react upon the heard. It might be some benefits with slower profiles as you have some bottom gain reserve that you might use in SOME cases. There are no common rules for it however.

THe Cat

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