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Vent too long for enclosure

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smitske96 View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 10:40am
The LF driver will interfere with the MF driver. 
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Earplug View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 10:54am
Yes - the tweeter should be ok, as they are (usually) isolated already, but the MF driver won't. You can use something as simple as a plant pot! Anything that seals it off from the LF waves within the cabinet.


Earplugs Are For Wimps!
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ssbb1fire View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ssbb1fire Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 8:28pm
Don't take it personnaly, but as I never heard of such thing, I'd like to know more about it. Can you explain to me why the medium would be influenced by the woofer if they are in the same enclosure ?
Where have you learned that ? A book, youtube, video, forum ? To get some data about it.
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APW View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 9:22pm
The pressure generated by the woofer will cause the mid into high excursion.
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ssbb1fire View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ssbb1fire Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 9:37pm
I've searched a lot this afternoon about that.
You're right, I have to isolate the medium for the woofer.
Now I have to find how to do that in the most efficient way possible. Do you have any advice ?
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infrasound View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote infrasound Quote  Post ReplyReply Direct Link To This Post Posted: 30 March 2021 at 9:57pm
Depends how big it needs to be.. But you can use a pot or pan with epoxy, or use bolts and bracing
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Earplug View Drop Down
Old Croc
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2021 at 7:10am
"Now I have to find how to do that in the most efficient way possible. Do you have any advice ?"

It's really quite simple. Something like this:-


Or just use a plant pot!  LOL





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snowflake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2021 at 10:57am
it looks to me like the KH310 uses a sealed-back mid, so it already has its own rear chamber built into the driver

google kh310 disassembly
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ssbb1fire View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ssbb1fire Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2021 at 1:48pm
Oh my that's a great solution !
I just have to find it in a store wich delivers to France lol, I might pay up to 100$ in fees from the USA...
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ssbb1fire View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ssbb1fire Quote  Post ReplyReply Direct Link To This Post Posted: 31 March 2021 at 9:04pm
Thank you for that reminder about volume, I completely forgot.
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DMorison View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMorison Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2021 at 1:45pm
Originally posted by ssbb1fire ssbb1fire wrote:

I've searched a lot this afternoon about that.
You're right, I have to isolate the medium for the woofer.
Now I have to find how to do that in the most efficient way possible. Do you have any advice ?

If you can't get a dedicated enclosure like Earplug suggested, just build a box within the main speaker box. Loads of examples in DIY projects all over the web, here's a good one to show what I mean: http://www.troelsgravesen.dk/Discovery-3WC-mkII.htm
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ssbb1fire View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ssbb1fire Quote  Post ReplyReply Direct Link To This Post Posted: 01 April 2021 at 2:19pm
I found this but it's for 5" and my driver is 4" so I d'ont know if that's the best choice.
https://www.toutlehautparleur.com/charge-close-0-8l-pour-haut-parleur-13-cm.html
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