Hello everyone!! I never build a speaker before, but I have some experience with DIY stuff. For the sake of simplicity and acoustical characteristics I first decided to build a voight pipe, but the size was a problem, so I settled on the single folded design, with front facing port. I have a pair of Lii Audio Fast 8 but I am struggling to get the right dimensions for the build. I thought that the online calculators were enough, but I saw that is heavily recommended to use hornresp for modeling. The problem is that I use a macbook, so I need to borrow a windows pc first, to then try figuring out how to use the software. Furthermore, based on what I saw of hornresp on youtube, I'm not exactly confident that I will get the dimensions right that quickly. That said, I thought of getting help here first, because maybe some wise kind soul could roughly estimate that for me, if that is not asking too much.
For placement sake, I can not afford a width larger than 30cm and a depth bigger than 36cm. The height is more flexible, but it is preferable to be around 100~115cm. I imagine that it need to be taller, but I rather sacrifice some bass extension (I live in a apartment with leaky bass problem)
The image bellow its one of the recommend designs from Lii Audio, with aprox. 136L of volume (its actually less because of the fold)
Technical data of the driver:
1. PMSE-Free 0.42 Ohms
2. Fs 47 Hz
3. Re 6.33 Ohms(dc)
4. Res 64.66 Ohms
5. Qms 7.10
6. Qes 0.69
7. Qts 0.62
8. L1 0.10 mH
9. L2 0.68 mH
10.R2 3.73 Ohms
11.RMSE-load 0.36 Ohms
13.Vas(sd) 69.7 liters
14.Mms 10.28 grams
15.Cms 1084 uM/Newton
16.Bl 5.15 Tesla-M
17.Splref(sd) 94 dB(Re)
18.Rub-index 0.02
Area (Sd): 213.82 sq cm
I do not need a perfect speaker cabinet for my frist build, just a 'good enough' so I can at least start to burn in the drivers. So if anyone at all could help me with that I would be forever grateful. But again, if that is too much to ask I will proceed trying out myself. I'm only asking because from my point of view, it seems that for those already used to the software, its not that hard of a task, but could be just my sheer ignorance of the subject. Thanks!!
For placement sake, I can not afford a width larger than 30cm and a depth bigger than 36cm. The height is more flexible, but it is preferable to be around 100~115cm. I imagine that it need to be taller, but I rather sacrifice some bass extension (I live in a apartment with leaky bass problem)
The image bellow its one of the recommend designs from Lii Audio, with aprox. 136L of volume (its actually less because of the fold)
Technical data of the driver:
1. PMSE-Free 0.42 Ohms
2. Fs 47 Hz
3. Re 6.33 Ohms(dc)
4. Res 64.66 Ohms
5. Qms 7.10
6. Qes 0.69
7. Qts 0.62
8. L1 0.10 mH
9. L2 0.68 mH
10.R2 3.73 Ohms
11.RMSE-load 0.36 Ohms
13.Vas(sd) 69.7 liters
14.Mms 10.28 grams
15.Cms 1084 uM/Newton
16.Bl 5.15 Tesla-M
17.Splref(sd) 94 dB(Re)
18.Rub-index 0.02
Area (Sd): 213.82 sq cm
I do not need a perfect speaker cabinet for my frist build, just a 'good enough' so I can at least start to burn in the drivers. So if anyone at all could help me with that I would be forever grateful. But again, if that is too much to ask I will proceed trying out myself. I'm only asking because from my point of view, it seems that for those already used to the software, its not that hard of a task, but could be just my sheer ignorance of the subject. Thanks!!
You might try inquiring with whomever designed that. We can't guess what the designer's choices for adaptation might be (and your changes aren't minor-enough to take a hip-shot).
Absent that, if you can run Excel, go nab Brian Steele's TQWT sheet. This will both get you a workable HR model & a set of panel dimensions. With the model & the sheet, you can iterate until you have something you're confident with. If you have specific questions about operation of the sheet itself (as separate from loudspeaker design), there is a thread for that.
If you just want to run-in some drivers, maybe choose a simple sealed or reflex box while you get more comfortable with designing your own custom pipe (?).
Absent that, if you can run Excel, go nab Brian Steele's TQWT sheet. This will both get you a workable HR model & a set of panel dimensions. With the model & the sheet, you can iterate until you have something you're confident with. If you have specific questions about operation of the sheet itself (as separate from loudspeaker design), there is a thread for that.
If you just want to run-in some drivers, maybe choose a simple sealed or reflex box while you get more comfortable with designing your own custom pipe (?).
