BTW, to view a pressure field, simply add this to the "observation.txt" file:
You will probably want to reduce the number of frequencies however, otherwise it will take quite a long time.
To see the throat in detail you can easily increase the resolution and limit the field area:
Code:
Nodes "FieldNodes"
Scale=1m
1 -0.2 0.3
2 0.4 0.3
Field "F1"
RefNodes="FieldNodes"
EdgeLength=10mm
BodeType=LeveldB; StepSize=3
Range=60
1 1 2You will probably want to reduce the number of frequencies however, otherwise it will take quite a long time.
To see the throat in detail you can easily increase the resolution and limit the field area:
Code:
Nodes "FieldNodes"
Scale=1m
[b] 1 0.0 0.2
2 0.15 0.2[/b]
Field "F1"
RefNodes="FieldNodes"
[b]EdgeLength=3mm[/b]
BodeType=LeveldB; StepSize=3
Range=60
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What crossover frequency would one want to use with this WG? My guess would be around 1200 hz to keep a smooth DI?
This depends mainly on the compression driver used - what it can handle. Generally you want the lowest XO frequency possible with what you have. Then you simply choose a woofer size that makes a smooth overall DI. If we assume that most of the 1" drivers can handle 900 - 1000 Hz with ease, what should be the right woofer size for this, looking at the DI around this frequency (around 7 dB)? I don't know off the top of my head - maybe 12", maybe 10"... There is some freedom anyway.
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I'll print and measure to see if it's a real problem and report back. It's printing now hopefully it doesn't crap out. It's 9hrs to print half. Hoping to have something to report soon...
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This is what I get from a simulation in Vituixcad. I simulated the diffraction-response from two 8" woofers on a 25x90 cm baffle. I SPl-traced the measurements of the ST260 + B&C DE502. And then I did some EQ'ing to get the responses flat.
Crossover is at 1000 hz LR4, this gave the smoothest DI. Note that the SPL-traced tweeter response only goes to 90 degrees, while the diffraction simulation goes 360 degrees.
Here is the dashboard from Vituixcad and below that the diffraction-tool.
Crossover is at 1000 hz LR4, this gave the smoothest DI. Note that the SPL-traced tweeter response only goes to 90 degrees, while the diffraction simulation goes 360 degrees.
Here is the dashboard from Vituixcad and below that the diffraction-tool.
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Ok you can breathe now 
The print split in the middle of the round over. So I'm thinking of making it thicker there and print with higher temp. See how it goes...
I'm new to 3d printing, if you guys have suggestions, please feel free.
It's been frustrating but fun at the same time lol
The print split in the middle of the round over. So I'm thinking of making it thicker there and print with higher temp. See how it goes...I'm new to 3d printing, if you guys have suggestions, please feel free.
It's been frustrating but fun at the same time lol
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are you printing in PLA? I've done a lot with that. this kind of thing is pretty hard because all the plastic above is pulling up as it cools slightly. Is you bed material PEI? if not consider it, it has REALLY good adhesion.
also you can make a flat "foot" like structure, it will help a lot too. just cut it off at the end. some people might recommend adding a raft to the print, but the problem then is that you wont get the nice smooth surface of the bed to glue the 2 halves together....
I'm using PLA roll which came with the Creality CR6E I bought.
I place my camera light box on it. and bumped up the temp 205/60 and 50 speed. I'll add the circles, thanks for the tip!
Yes PLA, just using the carborundum glass hotbed that came with it. I'll check on PEI and foot structure. Thanks