How low in distortion is Isobaric...

[joojoo1234]

An Isobaric construction for bass and low mids 31hz -300hz using 6 and half woofers or eighths in vented. I don't see this done alot which tells me something... what is wrong with this method as I want to get the cabinet smaller without resorting to a seperate sub if possible.

[Arty]

well actualy the proper way to do it is back-to-back, and the reduction in volume will be roughly only by one quarter for the total box dimension.

I prefer isobaric, removes a lot of non linear distorsion, and allso blocks the noises that form on the basket, and the vent on the pole piece of the magnet.

If you are going for a sub, i would not realy advise 6.5 inch drivers. I would look for something bigger. Probably least 10", and 12" and upward is my preference.

[dirkwright]

I don't think there's anything wrong with 6.5" subwoofers, just that you shouldn't expect much SPL out of them. That's fine for really close listening in a small room or cubicle, like at the computer. Obviously, they aren't home theater material!

[PeteMcK]

John K has written this up on his site, the distortion reduction isn't as much as you might hope for....

[joojoo1234]

Well box size is what I am looking for.. as in reduction of. I agree though that I am asking too much of 6 and half drivers. I think I will go eight. I am doing a little form over function thing. A sub is not necessary for good symphonic music playback. But I am not trying for a full sub effect but again more on the 32-35hz range without having a chest high tower.

[planet10]

Originally Posted by PeteMcK

John K has written this up on his site, the distortion reduction isn't as much as you might hope for....

And further, 2nd order distortion is reduced, 3rd should increase, quite possibly causing 2nd to be lower than 3rd which is not such a good thing.

dave