Please check my helmholz calculations!

Started by medboyle on 7 September 2007. 1 reply.

Originally posted at johnlsayers.com, topic 9376.

Hi, I am looking to start cutting the slats for my resonators and hoped someone could look at my calculations and plans and let me know if i'm heading in the right direction. I have attached a drawing of the space and a copy of my calculations My idea is to have: Unit 1 cover frequencies from 138 to 280 Unit 2 cover frequencies from 156 to 318 unit 3 cover frequencies from 183 to 377 Unit 4 cover frequencies from 233 to 488 Unit 5 cover frequencies from 377 to 647 Unit 6 cover frequencies from 494 to 766 Does this look sensible :?:, or should i make each box more tuned and say let unit 1 tackle Frequencies from 100 to 200 unit 2 from 200 to 300 and so on. Any Help/advice is greatly appreciated cheers Alan
File not preserved: My Helmholz calcs£.xls
Image not preserved: Live Room Slats.jpg
another option is to mix it up. you can divide the wells behind the resonators and use the upper and lower sections for low frequency control and the middle section for mids. this way you're taking advanage of the corners of the room (wall-wall, and wall-ceiling) for bass trapping, and the middle section at roughly ear height for mids and the diffusion the more open slats will provide. consider also, instead of have the corner trapped as you have it, instead, making the corner as shown below - this will give you move depth than simply staddling the corner without significant reduction in useable space.
Image not preserved: example corner slats.jpg