ML-TL or ML-TQWT with very low Qt driver

[Henkjan]

I think of making a TL of some sort for a driver with a very low Qt (0.14), what type of design suits best for this?

[Scottmoose]

A horn, unless you want to run active Eq, or you don't mind a hefty set of values in the correction circuit. Try a BIB with the dimensions I suggested for the FE166E. Jeff's site has these up: www.zillaspeak.com/bib.asp Look in the Fostex category.

[Henkjan]

mmm, so either big or big....

[Scottmoose]

Bigger is better.

Unfortunately, as GM so often points out, no free lunches in audio. I can do a set of dimensions for a resonant MLTL or ML TQWT for you, but you'll need a wad of series resistance or active Eq to bring it into line or the response is going to rocket (and that's not including BSC). Whether that's important to you or not will depend on the rest of your system, and your room -in a large room, dynamics will start to suffer a bit. I love ML TQWTs and MLTLs -I've build loads of the things, some of which are among the best speakers I've heard. But you're always better off, IMO, choose the right sort of enclosure for the job, rather than to force things. As a general rule, I try to set myself a 0.20 Qt limit these days -lower than that, and though you can still use it, it will usually be better off in a horn.

[tomtt]

might note that, the lower the qt, the lower the distortion
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eye candy-

http://img61.imageshack.us/my.php?image=altecva2.jpg

[Henkjan]

Originally posted by Scottmoose
Bigger is better.

Unfortunately, as GM so often points out, no free lunches in audio......

not looking for that, just a decent performance in a neat floorstander with good WAF; I'll fire up a sub for decent bass.

as monitor this driver performs well in a 8 liter BR, so suppose I give it 20liters in a floorstanding TL? f3=50? it's only a 7", no miracles expeced nor required.

[badman]

Originally posted by tomtt
might note that, the lower the qt, the lower the distortion
```````````````````````````````````````````````

eye candy-

http://img61.imageshack.us/my.php?image=altecva2.jpg

Nice eye candy

Is it proven that lower Qt is lower distortion? Or just a guideline correlated to effective motor coupling?

Don't get me wrong, I tend to prefer low-q drivers, but can you quantify your statement?