253 from s2 to s4 if you put it in hr.
i think you want to be close to 300 for 30 hz
but its only question of making tha cab deeper
i think you want to be close to 300 for 30 hz
but its only question of making tha cab deeper
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I cant input S6. Unless I have the older version of HR and you can now.
BUT I have :
L23 220
L34 85
I can change S5 1740 to S6 instead? But it doesnt make much difference in doing this.
BUT the simulation look about the same as your TH I posted earlier. But your last post has a deeper valley at 100hz and this design also goes a tad lower with the 305 L2-4
BUT I have :
L23 220
L34 85
I can change S5 1740 to S6 instead? But it doesnt make much difference in doing this.
BUT the simulation look about the same as your TH I posted earlier. But your last post has a deeper valley at 100hz and this design also goes a tad lower with the 305 L2-4
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That is what I ended up with. It is slightly different compared to the S values you gave. It got rid of a bit of the valleys. About 411liters also.
Just saw this. The valleys are better with your new S values. I am also using the 21SW152 in my simulations. Will look at the 8ohm TBW100 now.
The TBW100 looks great. Nothing close to the 21" but still great.
What 21" did you have on hand?
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No problem. Will have to look over the CAD drawing again also. See if I can see whats going on in the drawing.
I'm curious, how is L12 less than half the diameter of the speaker? 10.16cm = 4in. You 2 are using 9.1cm. I would think L12 would be between 25.4 and 30.48cm for a 21" speaker.
Your newest response shape there falls off before 30hz. My latest one and the one above falls off at about 30hz.if extended dy 10 cm i get this with the b&c 21 152
i have to check the data though.
S1 could be whatever you wanted. Most start off with the radius of the drivers while others dont use anything depending how much of the cone is exposed. I have seen all different ways of doing it. And changing L12 only effects the response by making the valley near 90hz but deeper.
i updated the pic in post 808
added a 48db lr @20 hz giving you -10 of 23 hz
box is 100 deep now
the only thing im not sure of is the lenght of the sections
could be that the wave turning the corner ad some length.
if you plan to bild it ,i suggest making from mdf first
added a 48db lr @20 hz giving you -10 of 23 hz
box is 100 deep now
the only thing im not sure of is the lenght of the sections
could be that the wave turning the corner ad some length.
if you plan to bild it ,i suggest making from mdf first
s2 is always measured bij the center of the driver wich is @ 0 in this case.
s1=s2 in symetric design(s1 cannot be negative value)
or chipwood or underlayment.
the cab is 100 wide 63 tall.
so that would make 630 liters,and that doesn.t ad up liters/spl.
thats why i think you gain length in the corners
i sggest you make it 90 deep and see what happens
my gues is it plays as low (or even lower)as the sim
the square one is 80x80 ,and is easyer to bild
the cab is 100 wide 63 tall.
so that would make 630 liters,and that doesn.t ad up liters/spl.
thats why i think you gain length in the corners
i sggest you make it 90 deep and see what happens
my gues is it plays as low (or even lower)as the sim
the square one is 80x80 ,and is easyer to bild
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I like the square one best so far. Is there anything drawn out yet?
Something I can see and adjust from there?
Something I can see and adjust from there?
no
but i could create one no problem
sofar whe got
b&c 21sw 152 .8r
s2 is set at 830?
box is 80x80x90?
edit/i simmed the 8ohm version
the 4 ohm version go's a few hz lower
but i could create one no problem
sofar whe got
b&c 21sw 152 .8r
s2 is set at 830?
box is 80x80x90?
edit/i simmed the 8ohm version
the 4 ohm version go's a few hz lower
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