R/E/P > Acoustics in Motion

Loudspeaker cabinet tuning / Helmholtz resonance

(1/1)

audiothings:
Greetings to everyone and congratulations on the clean new look.

I had posted this question on a forum I use more frequently, but no answers forthcoming, I decided to peep in here.

A loudspeaker cabinet design software like (the free) WinISD lets you "tune" the cabinet, based on the following parameters: box volume, port shape and dimensions, number of ports, port length.

Can such a software be useful in the building of helmhotlz resonators?

Thank you.

Jai Shankar Iyer.

 

Thomas@Northward:

--- Quote from: audiothings on May 11, 2011, 11:42:57 PM ---Greetings to everyone and congratulations on the clean new look.

I had posted this question on a forum I use more frequently, but no answers forthcoming, I decided to peep in here.

A loudspeaker cabinet design software like (the free) WinISD lets you "tune" the cabinet, based on the following parameters: box volume, port shape and dimensions, number of ports, port length.

Can such a software be useful in the building of helmholtz resonators?

Thank you.

Jai Shankar Iyer.

--- End quote ---

Well, check the exact parameters, but I don't see why not.

There are a lot of little excel tools on the net that can do that too. I'll try and see which ones I have buried on my HDD.

boggy:

--- Quote from: audiothings on May 11, 2011, 11:42:57 PM ---.....based on the following parameters: box volume, port shape and dimensions, number of ports, port length.........

--- End quote ---

... and loudspeaker driver that you use in simulated bass reflex cabinet, with its (simulated) electro-mehanical impedance, based on Thiele/Small parameters. :)

From my experience calculators for helmholtz resonator at http://www.mh-audio.nl/ACalculators.asp works pretty well.

You can measure resonant frequency and Q factor of it (in your room) using method described here:  " Measuring Helmholtz absorber resonant frequency in non-anechoic space."

Even with loudspeaker modeling software you must always measure/tune/tweak (manually) resonant frequency for bass reflex cabinet (at end, when you finish it)... so you can't have much benefits from it (loudspeaker modeling software).


regards

franman:
Bogic,

That is a nice Helmholtz calculator... thanks for the link!!

FM

Zoyla1:
There are other companies that make similar competing products, but I have not found one that I like better than the Mason castings and installation technique. We use this solution on most projects that can afford the materials and support a concrete slab as the basis for floating rooms.

Navigation

[0] Message Index