GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: A listening room for a domesticated Cat?

Post Subject: Hm, another midbass horn idea in new listening room?Posted by Romy the Cat on: 2/18/2016

As we are looking for our new home I am slowly simmering in my mind the ideas about new midbass horns. It is not that I am short for ideas but I am not sure that I will take my family on a bumpy and costly ride to build new horns. One way or another it was somewhere $20K, many months of dedicated labor or love and I do not want if I want NOW dedicate myself to it. The readers of my site do remember that period of my life stated from the thread “Midbass Horns and Real Estate” in 2009 and ended up with that kinky attic implementation that I enjoy now and I am so proud and it was a brilliant ides in my typically-humble opinion.

http://www.goodsoundclub.com/Site_Images/Horns_At_attic.JPG
http://www.goodsoundclub.com/Site_Images/HornsOnAttic_1.jpg

The biggest obstacle to my new midbass horn is not even all above but a feeling that I will hardly will be able again to make my midbass horn as hidden as I did at my current listening room and I certainly do not want to contaminate my new family home with new conspicuous 40 feet evidences of my high-end audio madness. Well, I am saying it and at the same time a new idea is brewing in my head. Here is what I am thinking.

The idea of make a midbass invisible is not properly formulated. Invisibility is not objective but rather the objective is that the horns should be not on my way. I have proposed before that the space between tall sealing and top of the horns is never used for anything and I remember Jessie well depicted it.

http://www.goodsoundclub.com/Site_Images/Ideal_setup_03.jpg

Now, let to play along with those lines. As now Amy and I are slowly smoldering in our heads one particular house that we saw before and will be having a second viewing this week. There are many thing that we like there many that we do not but the intricate subject in context of this site is that the house has a cathedral ceilings room of an “interesting” (for my objective) profile. I is not pointy but rather has 2 chords, look at the image below. The room is not so large but very nicely integrated with the rest of house and the vaulted ceilings makes small but nice. So, my idea is to locate the playback perpendicular (!!!) to the cathedral main beam and to use a natural curvature of room wall to write an profile of my midbass horn. The opening of the horn will happen at the location where it will not bother anybody. Furthermore, with proper coloring of the wall and the horn mouths it might be possible to make it pretty.

At the sketch above the MF horns are in grey and the ULF channels in green. The Blue is the midbass horn. It starts from long thin neck that might sit behind the ULF channel and then, when the exponential profile begin to open up it will over the ULF box and opening up to unused space above the main speaker. The benefits are very obvious: I can do 40-50Hz horn with no waste of usable footprint in a room and the cost of such horn will be very low as I re-use half of the horn as an existing wall (that obviously need to be beefed up). The problem that I see is only around a direct radiation of midbass and time alignment. I am thinking how to deal with it but the whole notion of the concept is very intriguing.

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