Pending on what you intend to feed them with, I wouldn't be concerned enough to implement any high pass filter at all. Especially the 15", but the 12" can also tolerate some abuse.
If you ever find yourself exceeding xmax and get some distortion, then implement the hp, but make a switch with a bypass.
If you ever find yourself exceeding xmax and get some distortion, then implement the hp, but make a switch with a bypass.
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if the driving amplifier has low output Z and a 600uF cap with low loss were used then the 200 liter closed box would look like so. A low source impedance is vital to get the impedance down in the "boost" region.
An externally hosted image should be here but it was not working when we last tested it.
... I see a bag of 100 decent enough polypropylene caps at 6,2uF each is around 100$ here.
Sounds like a bit of work.
Sounds like a bit of work.
Hi Scott,
Thank you for the box design. Not saying that I will build it right now, but it's on my wish list (gotta get the drivers first). Despite all horns, Open baffles, there is something appealing behind the simple plain big box 🙂
It's something like naturally aspirated 7.0 l V8 engine, of the 60's muscle cars. No turbo, but just plain simple and powerful, and sounds amazing 🙂
Thank you for the box design. Not saying that I will build it right now, but it's on my wish list (gotta get the drivers first). Despite all horns, Open baffles, there is something appealing behind the simple plain big box 🙂
It's something like naturally aspirated 7.0 l V8 engine, of the 60's muscle cars. No turbo, but just plain simple and powerful, and sounds amazing 🙂
Sorry to ask, any plan for a smaller boxes ? something like 38x38x120, in cm ? please ?
Thank you in advance
Thank you in advance
Link to post with info on 101 liter box.
New 12" Full-Range: Fane 12-250TC
"if you build it with 18mm material the outer dimensions including materials will be ca 89,5cm*38,6cm*38,6cm."
New 12" Full-Range: Fane 12-250TC
"if you build it with 18mm material the outer dimensions including materials will be ca 89,5cm*38,6cm*38,6cm."
Actually, a sealed 100l box+ transform sims just as good as a 200l one.
It will require more power (up to 4x at lower frequencies) but nothing a 50W amp can't manage.
It will require more power (up to 4x at lower frequencies) but nothing a 50W amp can't manage.
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I get xmax reached at 13 volts/40hz, with 98db output at 40hz, max driver power 22w, in a 100 liter closed box.
Xmax reached at 14,3 volts/55hz, with 100db down to 30hz, max driver power 27w, in the 101 liter box from post #343.
2/pi
I get xmax reached at 13 volts/40hz, with 98db output at 40hz, max driver power 22w, in a 100 liter closed box.
Xmax reached at 14,3 volts/55hz, with 100db down to 30hz, max driver power 27w, in the 101 liter box from post #343.
2/pi
"?" indeed. If I input a simple sealed box of 100l in winisd, the max spl graph (xmax limited) gives a maximum of 105db at 50hz, with a power input of 50w. The cone excursion hits 5.25mm and we're at 19v at the driver. Edit: to compare apple to apple: output @40hz is 101.5db when xmax is reached.
Once a Linkwitz transform is applied (f0=70, q0=.85, fp=50, qp=.71), the EQ will eat into the available power. We start in the midrange with 15w for 105db. But there's +2.5db @50hz, +4db @40hz, +6db @20hz, with the corresponding power increase. So the final curve gives 105db @100hz, a f3 at about 50hz, a f6 at about 37hz.
Once a Linkwitz transform is applied (f0=70, q0=.85, fp=50, qp=.71), the EQ will eat into the available power. We start in the midrange with 15w for 105db. But there's +2.5db @50hz, +4db @40hz, +6db @20hz, with the corresponding power increase. So the final curve gives 105db @100hz, a f3 at about 50hz, a f6 at about 37hz.
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According to the datasheet, 5.2mm. The 15" has 3.5mm.
edit: ugh... there are two datasheets floating around, with two different values
edit: ugh... there are two datasheets floating around, with two different values
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Which datasheet?
Would you please link to the datasheet you are talking about.
I can only see 3,5mm here listed on the Fane website.
https://www.fane-international.com/downloads/FANE-SOVEREIGN-12250TC-DS141117.pdf
Would you please link to the datasheet you are talking about.
I can only see 3,5mm here listed on the Fane website.
https://www.fane-international.com/downloads/FANE-SOVEREIGN-12250TC-DS141117.pdf
https://www.fane-international.com/downloads/Fane-Sovereign-12250TC-DS240316.pdf
https://www.fane-international.com/downloads/FANE-SOVEREIGN-12250TC-DS141117.pdf
Since the 3.5mm one is more recent, I guess they corrected an error. Too bad 🙁
https://www.fane-international.com/downloads/FANE-SOVEREIGN-12250TC-DS141117.pdf
Since the 3.5mm one is more recent, I guess they corrected an error. Too bad 🙁
Yeah, with a xmax of 3.5mm, winisd and your sims match. 100l sealed+LT (and a mild hpf) gives a max of 103db in the midrange, f3 at 49hz, f6 at 38hz.
If I read correctly your post 343, it's a 100l BR with a port of 13*36cm, tuned at 30hz ? Displacement under 25hz goes crazy, isn't it a concern ?
edit: of course, once corrected the 200l sealed isn't that good anymore. Less than 1db of improvement over the 100l one.
If I read correctly your post 343, it's a 100l BR with a port of 13*36cm, tuned at 30hz ? Displacement under 25hz goes crazy, isn't it a concern ?
edit: of course, once corrected the 200l sealed isn't that good anymore. Less than 1db of improvement over the 100l one.
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