Hello again.
Time has come for me to try to fulfill the long awaited dream of building a folded bass horn.
I would like to use the same old BMS 12" s330 subwoofers that I have.
I went on hornresp, and did some simulations and I understood that If I take this woofer and put it in a horn, it is best suitable for kickbass application meaning the horn should be built to work from 47 hz in this case, as tuning it lower the woofer will hit xmax if full power was being given to it.
Hornresp simulation shows me that the horn volume would be 361L for a hyperbolic horn.
Now I exported all the data and made a precise drawing.
But now comes the part that I dont understand - how to fold the mouth area?
How can I make the lower part of the horn flat if the mouth has a steep radius on both sides?
Im definetely doing something wrong here, could you please look into this.
I was looking around on the net and I see a lot of ready made horns that play down to 47 hz but I would like to understand the whole process, see the simulation in Hornresp, make a drawing, fold it and build it.
Also the horns that I have seen look smaller than 360L. The ones for kickbass.
I would read something more, but I even dont know where to begin
Time has come for me to try to fulfill the long awaited dream of building a folded bass horn.
I would like to use the same old BMS 12" s330 subwoofers that I have.
I went on hornresp, and did some simulations and I understood that If I take this woofer and put it in a horn, it is best suitable for kickbass application meaning the horn should be built to work from 47 hz in this case, as tuning it lower the woofer will hit xmax if full power was being given to it.
Hornresp simulation shows me that the horn volume would be 361L for a hyperbolic horn.
Now I exported all the data and made a precise drawing.
But now comes the part that I dont understand - how to fold the mouth area?
How can I make the lower part of the horn flat if the mouth has a steep radius on both sides?
Im definetely doing something wrong here, could you please look into this.
I was looking around on the net and I see a lot of ready made horns that play down to 47 hz but I would like to understand the whole process, see the simulation in Hornresp, make a drawing, fold it and build it.
Also the horns that I have seen look smaller than 360L. The ones for kickbass.
I would read something more, but I even dont know where to begin
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You need to decide on your boundary loading.
4Pi down to Pi/2
That determines the required mouth area for a non truncated horn.
Determine your rate of flare to suit your lowest fequencies.
Those two decide how long your horn will be and it's internal volume.
Then decide what proportion you think you can truncate without affecting the response too much.
50% to 70% chopped off the length seems to be tolerable.
4Pi down to Pi/2
That determines the required mouth area for a non truncated horn.
Determine your rate of flare to suit your lowest fequencies.
Those two decide how long your horn will be and it's internal volume.
Then decide what proportion you think you can truncate without affecting the response too much.
50% to 70% chopped off the length seems to be tolerable.
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