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In the Forum: Horn-Loaded Speakers
In the Thread: It's might be another project...
Post Subject: This is the whole pointPosted by Romy the Cat on: 10/19/2024
 a.anagnost wrote:
Based on the above, the BR theory may/can explain the observed differences using random (Altec and Vitavox) drivers: 
We need specific Vb for each driver and specific tunning of the horn duct.

In your case (since all dimensions are fixed), If I wanted to use the Vitavox, I would reduce Vb.
This is the whole point of changing the driver's,  absorbs the result, but very explicitly do not try to interpret the results. It is obviously that each driver would require own volume of compression chamber before mouth. Since my current horn was built by an armature who just caught design I didn't know what he's doing I presume that the volume of compression chamber currently is absolutely random. However if it was built even by a smart person who very much know what he is doing then it is superbly difficult to tune the compression chamber properly to a given driver. If it was not a dipole then there are thousand parameters which might impact the size of compression chamber, like  type of corner you have, the accuracy of positioning Horn in the corner, presents of large pieces of furniture which produce contra pressure to the horn mouth and many other factors. And then we suddenly remember that this is a dipole and the only god knows how much direct versus reflected sound I am hearing. Yes it's my be measured through the time domain but in reality this knowledge would not have any practical benefits, as any minute abstraction of direct radiation sound will force to the change the volume of compression chamber. I feel in this situation a perfection is enemy of good enough. I very explicitly stated to myself that all that I do just randomly change driver and do not look anything further into it. Sometimes when I retired and Have nothing to do I would like to play this size and shape of  the bouncing plate depicted red on my schematic. The whole idea of this project was to get a random result as is. I had very little hope that it would be interesting and frankly speaking, subconsciously I was hoping that it would be not good  as I have too many speakers in my house and I do not need another playback system. The result that I got in my view Is so ridiculously interesting was accomplished by so little means I decided to keep this corner horns And nowadays my older son playing his Taylor Swift on it more that I play my music.

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