Javier_Huerta
Supporting Actor
- Joined
- Mar 9, 2002
- Messages
- 619
Hi,
As I go deeper into the mistery of vented designs , I have found out something interesting.
I can make a vented box go flat quite easily. As a matter of fact, WinISD does it for me.
But in thread after thread, I've seen doing this is not quite as easy.
I could create a box with a fairly flat looking curve, and then a very steep drop-off. I've been told this is a very bad design idea, since the Q will be too high.
So I have loaded the three Adire vented designs into WinISD and studied their curves. I have seen they aren't flat at all - they have a slight slope, with no sharp drops anywhere.
I have tried to simulate my boxes using this criteria. But I do need help.
For example, in my box, I have a sudden change in slope right in F3. I'd think this is a bad idea. If I have this change in slope, should I just make sure it happens *below* F3? Or should I simply try not to have it?
Also, is it true a vented box simply cannot reproduce sounds below its F3? I find it hard to believe, since all of Adire's designs have their F3 above 20 Hz.
Help... please
As I go deeper into the mistery of vented designs , I have found out something interesting.
I can make a vented box go flat quite easily. As a matter of fact, WinISD does it for me.
But in thread after thread, I've seen doing this is not quite as easy.
I could create a box with a fairly flat looking curve, and then a very steep drop-off. I've been told this is a very bad design idea, since the Q will be too high.
So I have loaded the three Adire vented designs into WinISD and studied their curves. I have seen they aren't flat at all - they have a slight slope, with no sharp drops anywhere.
I have tried to simulate my boxes using this criteria. But I do need help.
For example, in my box, I have a sudden change in slope right in F3. I'd think this is a bad idea. If I have this change in slope, should I just make sure it happens *below* F3? Or should I simply try not to have it?
Also, is it true a vented box simply cannot reproduce sounds below its F3? I find it hard to believe, since all of Adire's designs have their F3 above 20 Hz.
Help... please