Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: Problems with horns: upper bass
Post Subject: Building a midbass horn...Posted by Romy the Cat on: 3/26/2005
viagra prodej cena
viagra cena s
receptem  Antonio J wrote: |
| INTEGRATION that's the clue and that's what I always feel lacks in my room, I mean extreme integration, real integration, the feeling that the recorded bass sound has its own boundaries, not my room's. |
|
I do not completely agree with your definition of “integration”. I meant the integration between the drivers not the integration in the room. To be specific I can comment how Avantgarde did it. They use 125Hz tractrix at midbass and ~350Hz tractrix at MF. They located them fairly close (still it might be way closer and result’ll be even better). The cones of the MF and LF are aligned. The “type of the sound” between the MF and upperbass drivers is very much alike, not particularly the best but the obsolete quality is irreverent in here - the important thing that they have similar “type” of the sound. The LF low knee on the Avantgarde MF driver use 15uF first order filter against 8Ohm that make it 1300Hz eclectically. Acoustically the MF channel (filter+horn) roles off at it’s bottom at ~800F with near second order. (BTW, they could make the MF horn twice smaller and get a lot of benefits form it) The upper knee of the midbass channel has 3H of first order against 8Oh that arrive approximately at eclectically 450Hz. Acoustically the midbass has nice 1-2 order slope all the way to 1KHz. The midbass and MF are quite mutually penetrated each other, time-aliened, and with similar types of sound coming for each channel. If you drop the MF channel 9” down than it would be even more coherent. I am not saying the there are no better ways to integrate the Avantgarde’s MF and Avantgarde’s upperbass but what they did in Trio was quite good enough.
| Antonio J wrote: |
| So you said, midbass horns? OK, let's go. Drivers? what horn? where to buy it? how to do it if it's not available commercially made? we'll talk later about midrange ha ha ha ;-) |
|
Anatony, I do not know any midbass horns that industry produces. There are number of small shops that build them and I can name a number of then but you should worry about the shops and people that are closer to you and I do not think you want your horn to be shipped from US. I know there is a large community of French guys who do horns, perhaps you might contact them, and perhaps they could name some guys in Spain. All that you need is a building plan and a woodmaker who would listen you. This all might sound complex but in realty it is very simple for a person who knows how to build wood. I personally do not build horns, I experiment with them and I have somebody else who actually do the things and who possess all necessary knowledge about manufacturing process. I think if you have a popper ideas then it would not requite a super high skills woodmaker to build a simple and regular rectangular 80Hz horn… Perhaps even some of your local woodshops, if you become friends, would do it for you. How complicated would be to build a lower horn from system?
Image courtesy to “Vintage Audio Trader”
I do not think that it would a problem at all.
Rgs,
Romy
Rerurn to Romy the Cat's Site