As sreten says, if loud spls aren't a requirement then a decent dipole can get you very low (mine always did). If you are after high SPLs and you must use dipole main panels, then using them down to ~40Hz, with a standard monopole for everything below, is definitely the way to go.
As DougL says though mutiple subs do work extremely well. I've used both dipoles and mutple subs and prefer the latter by far. It looks better, sounds better and can give real output where it counts for movies.
As DougL says though mutiple subs do work extremely well. I've used both dipoles and mutple subs and prefer the latter by far. It looks better, sounds better and can give real output where it counts for movies.
Extreme Volumes are the main problem, ib is for me only solution, whole systen is dipole based, whits is doing 124 db, over 100 hz, is there any solution make normal dipolesubs working enough hard to make such kinds of decibels, this is like overengineering, 110 db would be fine if there is no crack in the voice, but i prefer "litt
le" headroom 
It's kind of an easy question. This is what you build, many have already. I think it will go beautiful with dipole:
http://www.diyaudio.com/forums/subwoofers/160879-build-your-own-2x12-th-kraken-212-th.html
/Erling
http://www.diyaudio.com/forums/subwoofers/160879-build-your-own-2x12-th-kraken-212-th.html
/Erling
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It's kind of an easy question. This is what you build, many have already. I think it will go beautiful with dipole:
http://www.diyaudio.com/forums/subwoofers/160879-build-your-own-2x12-th-kraken-212-th.html
/Erling
Interisting idea, but does bass quality match with pure dipoles, or are you thonkin that the ear sensitivity in those freququnsies solve the broblem?
This is what I exepted, but think harder how we can solve this? Ib can do that, but if there could be another way?
Ok maybe little bit over 120 db in real life , 200 cm long ribbon whole range tweeter.
The thing with bass applications in audio is that you always design to meet certain specifications. In other words how low and then how loud do you need. Of course there are other factors that come into it, like how much you're prepared to spend, how big a box you can put up with and how large your amplifiers are. But at a fundamental level you can quite easily rationalise it down, as tvrgeek said, with the laws of physics.
Linkwitz has a spreadsheet that will calculate all of this for you, but it's most likely going to take at least 4 high excursion 21" drivers on an equally large H or W baffle and with lots and lots of power.
Linkwitz has a spreadsheet that will calculate all of this for you, but it's most likely going to take at least 4 high excursion 21" drivers on an equally large H or W baffle and with lots and lots of power.
I have look those elements, do you think that biggest ice power modules can drive them, if there is a 1 amp for 1 element?
IMHO, everyone who has not heard a wellconstructed TH with expanding crossection area still has one sensation left. Soundcharacter is very OB-like.
Have a look at this experiment that I was involved in: http://www.diyaudio.com/forums/full-range/214545-open-baffle-horn-hybrid-2.html#post3064108 . I don't think it is just chance that Wisdom Audio complement their speakers with a TH sub: High performance in-wall and on-wall architectural products and subwoofers with Audyssey Room Correction - Wisdom Audio .
Now for the real sub frequencies that you talk of perhaps dipoleblending is not so much of an issue as practical and economical ways of achieving those SPLs relatively distortion free.
/Erling
Have a look at this experiment that I was involved in: http://www.diyaudio.com/forums/full-range/214545-open-baffle-horn-hybrid-2.html#post3064108 . I don't think it is just chance that Wisdom Audio complement their speakers with a TH sub: High performance in-wall and on-wall architectural products and subwoofers with Audyssey Room Correction - Wisdom Audio .
Now for the real sub frequencies that you talk of perhaps dipoleblending is not so much of an issue as practical and economical ways of achieving those SPLs relatively distortion free.
/Erling
Hi,
How wide is the dipole baffle ? What is your baffle loss at 100Hz ?
What theoretical output at 1m infinite baffle does the ribbon
need to provide to actually hit 120dB in the dipole ?
rgds, sreten.
You mistake big driver for big power requirement. I would drive these with
a few watts.
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