I made a mistake with the price of the alpair 10 gen 3, instead of $200 a pair they where $200 a piece 🙁 But i found someone who was selling his gen 2 so i ended up getting those, picked them up this morning 😀 Hope they'll be as good as the gen 3, the ts parameters do differ a little:
Alpair 10 Gen. 2 information:
T/S date LMS V4 Anechoic:
Revc= 7.200 Ohm
Fo= 35.386 Hz
Sd= 88.250 cm²
Vas= 28.119 Ltr
Cms= 2.543m M/N
Mmd= 7.480 g
Mms= 7.956 g
BL= 5.606 T·M
Qms= 2.530
Qes= 0.41
Qts= 0.35
Levc= 93.626u H
No= 0.297 %
SPLo= 87 dB
X max= 8.5-mm (1 way)
Power = 35 watts nom. 70 Max
Coil = 25-mm alu body with rectangle copper winding.
Anyhow, time to get some ply 🙂
Alpair 10 Gen. 2 information:
T/S date LMS V4 Anechoic:
Revc= 7.200 Ohm
Fo= 35.386 Hz
Sd= 88.250 cm²
Vas= 28.119 Ltr
Cms= 2.543m M/N
Mmd= 7.480 g
Mms= 7.956 g
BL= 5.606 T·M
Qms= 2.530
Qes= 0.41
Qts= 0.35
Levc= 93.626u H
No= 0.297 %
SPLo= 87 dB
X max= 8.5-mm (1 way)
Power = 35 watts nom. 70 Max
Coil = 25-mm alu body with rectangle copper winding.
Anyhow, time to get some ply 🙂
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I have sim'd the 10.2's before already. In a Cornu, the results are very similar (almost indistinguishable) so go ahead and use them.
I will 😀 Did you ever experiment with the double cornu horn? (with the divider in the middle) I'm still wondering if it would make a difference.
No, I never made a double layer horn. If I did, I would make the second layer a different size to have different horn lengths. Say a 20x20x2.5 in deep + 27x27x3 in deep. It would be interesting and I think the sims would show an advantage. I probably have run sims already but forgot where I put them...
Well the original design by Daniel had the splitter, he must have had a reason for using it. I'm not expecting it to give more bass, because the box size stays the same, right? But i dont know what the effect on the sound will be, if there is any (?)
The splitter on the original is there for construction reasons: it forms the guide channel for fitting the curved wooden pieces before they are glued. Using the hot melt and flexible foam core channel negates this. Having a splitter will make the acoustic mouth size of each horn smaller, and theoretically, this may affect the lowest notes that come out.
If I were to do double layer it would be for acoustic reasons of spreading the resonances of each horn length over different frequencies for a smoother output. Taken to an extreme, you could end up with something like this: http://www.diyaudio.com/forums/full-range/236779-panpipe-pentahorn-blh-speaker.html
Haven't you made that thing already? i remember you posting the design in this thread waaaay back 🙂 I didn't know it was just for construction reasons.. kinda disappointing. I was thinking it would function a bit like a multicell horn. Altough i'm not sure what the advantages of those are.
Just borrowing from the panpipe idea, to have different horns on the second layer. 😀
It would even be easy to add a layer to my current cornus. Just make a hole in the back and add spirals, and one more wall at the back. I'd do it if it promised to be an improvement. Would be nice to see some simulations of it.
It would even be easy to add a layer to my current cornus. Just make a hole in the back and add spirals, and one more wall at the back. I'd do it if it promised to be an improvement. Would be nice to see some simulations of it.
Multicell is for mids/HF's to control directivity - for bass horn you want the channel to be big to support a larger wavelength in the lateral direction.
No, I never made a double layer... There are a few folks who did though, one was a huge 3 ft x 4 ft one for an 8 inch driver. I forget who did it now. Deep back in the thread. Francisco Perez did a 2 layer out of wood just like the real Cornu. That's about it. Oh, and then there is the Cornu I saw here where it is obvious that FC was used but with wooden faces and made pretty big to fit a 6.5 inch Lowther (whomever made this gorgeous speaker, please tell us more about it! 🙂 ) :
An externally hosted image should be here but it was not working when we last tested it.
The woodwork is nice for sure but the depth has me scratching my head. I think it starts to lose it appeal when extending that far out. The meaty baffles are a real plus I'm guessing.
Where'd the pic come from X?
Where'd the pic come from X?
Some Japanese for sale site:
lowtherÕÏ°å - À×Êϵ¨»ú - ´¨ÓåµØÇø - µ¨ÒÕÐùÒôÏì²ÄÁÏÍø ÒôÏì|½»Ò×|µç×Ó¹Ü|µ¨»ú|µ¨»úÍøÕ¾|µ¨»úÂÛ̳|µ¨»ú²ÄÁÏ|Êä³öÅ£|±äѹÆ÷|µçÔ´Å£|µç×è|µçÈÝ
Translation says it took 3 men to carry these up the stairs and embed them in the wall! Those wood baffles are thick and having 3 sheets of what appears to be solid mahogany or cherry wood of approx 100 cm x 100 cm size (that is 3.5 ft x 3.5ft) (estimated based on overal dia of Lowther which is 22.5cm) is no laughing matter.
lowtherÕÏ°å - À×Êϵ¨»ú - ´¨ÓåµØÇø - µ¨ÒÕÐùÒôÏì²ÄÁÏÍø ÒôÏì|½»Ò×|µç×Ó¹Ü|µ¨»ú|µ¨»úÍøÕ¾|µ¨»úÂÛ̳|µ¨»ú²ÄÁÏ|Êä³öÅ£|±äѹÆ÷|µçÔ´Å£|µç×è|µçÈÝ
Translation says it took 3 men to carry these up the stairs and embed them in the wall! Those wood baffles are thick and having 3 sheets of what appears to be solid mahogany or cherry wood of approx 100 cm x 100 cm size (that is 3.5 ft x 3.5ft) (estimated based on overal dia of Lowther which is 22.5cm) is no laughing matter.
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