Tempest 214L Adire (1 Viewer)

[Steve J.]

Morning,
I recently completed the basic box for the 214L Adire alignment. But wonder if anyone has tried using acoustic foam to line the box? I emailed Adire tech and they had not tried it. Also I used the recommended 3/4 MDF and feel some vibration on the box. Would another layer of 3/4 improve the sound? BFD is the next item to integrate.
Any opinions are welcomed!

Steve

 

[fred garvin]

i'm building an adire box as well. i'm curious as to whether you feel the box vibrating or do you hear it vibrating, i.e. 2 pieces of wood rubbing together and making an annoying noise. I imagine that the box is going to have some vibration in it no matter what. every sub i have touched vibrates somewhat when operating. I would imagine eliminating it completly to be impossible. i certianly could be wrong on this though and am sure others will chime in on this (i hope)

 

[Steve J.]

I feel the box vibrating. There is no wood to wood vibration. I think the addition of another layer of MDF would reduce it considerably however it is already VERY stout. Once I have put the final veneer on it I will post pics. Thanks for your response and good luck with your box!

 

[GrahamT]

I made the EBS Tempest (exactly as on the pdf) and lined all the walls with an inch of polyfil. The sides still vibrate. So does the top and it is 1.5" thick and braced and has probably 100 screws in it. It sounds great though, dont notice any problems.
There shouldn't be any pieces rubbing, everything should be glued.

 

[Aaron Gilbert]

Did you use the plans on the Adire site? If so, seems like it should be indeed stout and strong enough. If it hasn't been finished yet, you could add more braces. I used six 2 x 4's to join the front baffle to the rear of my 275l subwoofer cabinet. However, I also have 2 x 2 glue blocks on every single joint inside, which no doubt helps quite a bit. I'm only using a meager Dayton Quatro 15", but cannot feel any vibration on the cabinet at any output level. I'm sure another layer of 3/4" MDF would help, but I suspect not any more so than additional braces, which will be far lighter and easier to add.


Aaron Gilbert