3"or 4" driver with very good dispersion and high xmax? - diyAudio
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Old 20th September 2012, 07:54 PM   #1
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Default 3"or 4" driver with very good dispersion and high xmax?

Hi guys,

I'm not familiar with the marketplace for 3"/4" fullrange drivers. Looking for a driver with very good dispersion and high xmax. Are the Tang Band W3-1878 and W4-1879 worth their money? Any other recommendations?
 
Old 20th September 2012, 09:35 PM   #2
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I don't know. It depends what your idea of value is. The Mark Audio range have good (by wideband driver standards) off axis performance in part due to having a relatively flat cone profile. I can't think of any other 3in - 4in widebanders offhand with a long Xmax that fit that criteria.

Of course, this does tend to bring us back to a fundamental point: what is Xmax? There is no industry standard definition. Some use 10% THD. Others use 0.5 x absolute value of the height of the magnetic gap - height of VC winding. Others simply take it as a physical measurement of the VC gap and winding height. All will give different values for the same driver. And none of the manufacturers generally states which method they use. 99.99% of the time, it will either be whatever was easiest for them to do, or whatever looks best on a data sheet, assuming they care. So what does it mean? Not much. Take the first example. A driver could be at 9.9999999% distortion and still nominally be within Xmax. Cracking. That's going to sound a heck of a lot better than 10.0000001% distortion isn't it? Or take the other two examples. No actual distortion value is attached to either -it could be almost anything. So much for the notion of linear operation. It's at best a very general guide, and frankly, not a very good one at the present time.

Hmm. My first rant of the day, and it's 2235 local time. I'm slipping. Remind me to see my doctor.
 
Old 20th September 2012, 10:22 PM   #3
chrisb is offline chrisb  Canada
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. Remind me to see my doctor.


Who?
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Old 20th September 2012, 10:33 PM   #4
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The small Aurasounds are the kings of xmax, but sound wise perhaps the good value Omnes 3.01 (3") might fit the bill, its a great sounding small driver that seems to handle a bit of punishment.

Last edited by Bill poster; 20th September 2012 at 10:36 PM.
 
Old 20th September 2012, 10:48 PM   #5
cotdt is offline cotdt  United States
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The new Tangbangs are the way to go!
 
Old 21st September 2012, 06:12 AM   #6
chrisb is offline chrisb  Canada
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The new Tangbangs are the way to go!
which ones exactly?
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Old 21st September 2012, 02:53 PM   #7
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Who?
If he's got the new girl with him (just been given her first airing, although not officially as the Doctor's companion just yet -that's apparently in the Christmas Special), then very definitely 'yes.'
 
Old 21st September 2012, 02:55 PM   #8
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The new Tangbangs are the way to go!
I don't doubt they're good units, but which ones, why do you like them, and any off-axis measures? Some extra detail would be useful.
 
Old 21st September 2012, 03:04 PM   #9
cotdt is offline cotdt  United States
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The Tangbang 4" with the flat sandwich aluminum cone. It's got 15x more xmax than a Fostex.
 
Old 21st September 2012, 03:05 PM   #10
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The Tangbang 4" with the flat sandwich aluminum cone. It's got 15x more xmax than a Fostex.
Doesn't seem to be available anymore? Do you have the type number?
 

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