FWIW, Kangchenjunga is my favourite of the 110 vented enclosures that I designed for the MA site, but if you want a compact standmount, this ain't it. 😉 Note sketch not to scale.
https://www.markaudio.com/wp-content/uploads/2022/12/Kangchenjunga-CHN110-MLTL.png
Imbolc is another one I rather like...
https://www.markaudio.com/wp-content/uploads/2022/12/Kangchenjunga-CHN110-MLTL.png
Imbolc is another one I rather like...
Here's basically what I posted awhile back on another thread as a guideline......
Attachments
So, it looks like what I posted is mostly correct? (if you didn't click on the spoiler text, here it is un-spoiled, edits mostly formatting and the question on the port).
Horizontal cross section area = 503.95 cm2
Length Top to Driver = 19.56 cm
Length Driver to Port = 32.60 cm
Length Port to Bottom = 3.89 cm ... ~3" round port, but see below?
Area of Port = 50 cm2 ... if round ~3-1/4" or 80mm ?
Length of Port = 20 cm
Acoustic Path Length = 32.6
System Volume = 29.246 L
Driver parameters were:
Sd = 109.00
Bl = 5.85
Cms = 1.46E-03
Rms = 0.86
Mmd = 8.24
Le = 0.12
Re = 6.80
Horizontal cross section area = 503.95 cm2
Length Top to Driver = 19.56 cm
Length Driver to Port = 32.60 cm
Length Port to Bottom = 3.89 cm ... ~3" round port, but see below?
Area of Port = 50 cm2 ... if round ~3-1/4" or 80mm ?
Length of Port = 20 cm
Acoustic Path Length = 32.6
System Volume = 29.246 L
Driver parameters were:
Sd = 109.00
Bl = 5.85
Cms = 1.46E-03
Rms = 0.86
Mmd = 8.24
Le = 0.12
Re = 6.80
There's some misc. stuff missing, but not required nor the driver specs for just doing a cab drawing. 😉
The vent is a rectangular duct, though a 3" dia. i.d. pipe is acoustically identical.
The vent is a rectangular duct, though a 3" dia. i.d. pipe is acoustically identical.
Thanx,
https://frugal-phile.com/boxlib/GM-CHN110-ML-TL.pdf
Vent is rectangular so that it can use the bottom as part.
Snapshot posted earlier updated.
dave
https://frugal-phile.com/boxlib/GM-CHN110-ML-TL.pdf
Vent is rectangular so that it can use the bottom as part.
Snapshot posted earlier updated.
dave
Proper drawing of Scott’s Kangchenjunga
http://wodendesign.com/downloads/Kangchenjunga-MLTL-CHN110-0v81-230223.pdf
And i exrapolated to a twin CHN-110:
http://wodendesign.com/downloads/TwinKangchenjunga-MLTL-CHN110-0v81-230223.pdf
Note that due to Scott’s house issues he has not yet vetted these.
dave
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Looks good to me (lovely work as ever, Dave!), but will double-check 1st thing in the morning before the builders start in again. 🙂
Kangchenjunga is a beast of a mountain. Beautiful, though. I'd love to see it at some point. Although the climbing, I'll leave to those better qualified. And a whole lot fitter. 😉
Kangchenjunga is a beast of a mountain. Beautiful, though. I'd love to see it at some point. Although the climbing, I'll leave to those better qualified. And a whole lot fitter. 😉
I'm impressed you guys can move a 1.5m-torque 50lb cab sans base & driver. (I'm 6' and practically move heavy book boxes for a living.)
Some feedback on the plans via email Dave. All basically fine, some minor tweaks to one dimension & text only. 🙂
PDFs in Post #28 have been updated with some mnor bug fixes.
dave
dave
How about the St Helen's vented box from the image below, does anyone have more information about it ? It looks like a some form of a hybrid MLTL, but I'm not sure. What would be the correct positioning/placement in a room ?
Thanks for the reply, Do you happen to know if anyone built it already and their listening impressions ?
I know of a couple of builds, but no listening impressions. They probably wouldn't be a great deal of use though, since the systems and rooms will be completely different & opinion being what it is... 😉 Midband & HF 'are what they are'; it's really only the LF range that's affected by the enclosure, relatively minor differences in diffraction etc. from different sized baffles notwithstanding.
I wonder if Scottmoose would have change Pensil today?
I am thinking about Bluebuck.
Can you do a box like Bluebuck for 12p and 11MS and Maop10.2?
I am thinking about Bluebuck.
Can you do a box like Bluebuck for 12p and 11MS and Maop10.2?