Brian,
Is there any way you could use your spreadsheet to reverse engineer a sim for dimensions? http://www.diyaudio.com/forums/subwoofers/278424-help-reverse-engineering-sim-tham15ds.html
Is there any way you could use your spreadsheet to reverse engineer a sim for dimensions? http://www.diyaudio.com/forums/subwoofers/278424-help-reverse-engineering-sim-tham15ds.html
Unfortunately my THAM spreadsheet can currently only model single-expansion THAM THs, and that looks like a dual-expansion one.
Once I've finished work sorting out the bugs in my SS-fold spreadsheet, I could have a look at the THAM one to see if it can be modified to cover dual-expansion THAM folds.
Your welcome 🙂. Creating and checking the formulas in Excel that describe the layouts is proving to be quite a challenge, but I'm seeing a particular "pattern" emerging in the calculations for the sample points. If I'm right, it could make modifying the spreadsheet to cover different layouts much easier.
3D
What i, & i expect a Lot of others would REALLY like to see, is someone Actually produce/show Exactly how to translate a 2D HR sim into a 3D image 🙂
What i, & i expect a Lot of others would REALLY like to see, is someone Actually produce/show Exactly how to translate a 2D HR sim into a 3D image 🙂
Hi Zero D,
Post # 205: "...how to translate a 2D HR sim into a 3D image"
I just responded to Zwiller's link in Post #201, and while I generally draw in 2D a similar method should get you into 3D.
I don't want to clutter up Brian's thread, so take a look here: http://www.diyaudio.com/forums/subwoofers/278424-help-reverse-engineering-sim-tham15ds.html
Regards,
Post # 205: "...how to translate a 2D HR sim into a 3D image"
I just responded to Zwiller's link in Post #201, and while I generally draw in 2D a similar method should get you into 3D.
I don't want to clutter up Brian's thread, so take a look here: http://www.diyaudio.com/forums/subwoofers/278424-help-reverse-engineering-sim-tham15ds.html
Regards,
http://www.diyaudio.com/forums/subwoofers/119854-hornresp-114.html#post4421011
You can use this.
There is no limit on the number of petals. You can use 4 if you wish.
You can use this.
There is no limit on the number of petals. You can use 4 if you wish.
...and here's an updated version that allows S1 to be set independently of S2. It also has a few more bug-fixes in it.
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@ Mark Kravchenko
I haven't built a TH as yet, not sure i will, but i think it would be helpful for everyone if someone could Directly translate a sim into the folds in 3D 🙂
@ tb46
Thanx, i'll take a look 🙂
I haven't built a TH as yet, not sure i will, but i think it would be helpful for everyone if someone could Directly translate a sim into the folds in 3D 🙂
@ tb46
Thanx, i'll take a look 🙂
....and here's an updated version that can do dual-expansion THAM folds...
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Arrggh - forgot to update it with the HornResp output.
There's still some issue somewhere however. The corresponding HornResp sim is slightly larger than the net box volume given in the spreadsheet. I suspect it's something to do with how I'm calculating S5. I'll have to check it again during the week when I get a chance.
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Here's an updated version of the THAM spreadsheet. It fixes one minor bug (calculations for panel H) and adds a few features.
Note that the spreadsheet (as per previous versions) includes the option to top-mount or bottom-mount the driver. Of course, if the driver is top-mounted, the top of the enclosure will need to be made removable. Based on my experience with POC2, I suggest that you never, never, never do this. That particular section needs to be well-braced to get the best results, and it's impossible to do so and have a removable driver access panel at the same time.
Note that the spreadsheet (as per previous versions) includes the option to top-mount or bottom-mount the driver. Of course, if the driver is top-mounted, the top of the enclosure will need to be made removable. Based on my experience with POC2, I suggest that you never, never, never do this. That particular section needs to be well-braced to get the best results, and it's impossible to do so and have a removable driver access panel at the same time.
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Hi. I'm completely new to this. Can someone explain what order I need to use these different tools in?
I have Hornresp, I've entered all the Thiele-Small Parameters etc. I hit calculate but not sure what values I should be exporting into the Boxplan spreadsheets.
I notice that the S1-5, L12-45 etc. etc are not calculated in Hornresp, so I'm assuming that I need to set at least some of these myself to indicate a folded tapped horn design. I have no idea what to do next.
The driver I'm using is a Dayton Audio RSS315HF-4 12".
Any pointers would be hugely appreciated!
I have Hornresp, I've entered all the Thiele-Small Parameters etc. I hit calculate but not sure what values I should be exporting into the Boxplan spreadsheets.
I notice that the S1-5, L12-45 etc. etc are not calculated in Hornresp, so I'm assuming that I need to set at least some of these myself to indicate a folded tapped horn design. I have no idea what to do next.
The driver I'm using is a Dayton Audio RSS315HF-4 12".
Any pointers would be hugely appreciated!