some make a point by using titanium voice coil formers, what is so good with these vs. kapton? is it mostly stiffness?
I believe that metal voice coil formers lead to much improved power handling because they are thermally conductive. Almost nothing is more thermally conductive than aluminum, but ALL metals are much much much better than polymers such as kapton.
If the metal voice coil formers have a higher power handling than e.g. fiberglass, we would only see metal vc formers in prosound drives/woofers, but this is not the case, almost zero pro drivers use metal vcf.
21IPAL LF Drivers - B&C Speakers
Drawback of metal formers are eddy currents, with overhung coils. You don’t want those in PA applications.
[Edit]ScottG did the explaining bit already I see.
[Edit]ScottG did the explaining bit already I see.
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The main advantage of a Titanium Former vs Aluminum (and perhaps the only substantive advantage barring an over-hung VC on a driver with almost no mechanical resistance), is:
You can net a tube that's thinner (all-else-equal).
This allows the driver to narrow the gap (between top plate and pole piece): increasing field strength in the gap. OR you could increase VC winding layers for a similar gap size of a single VC winding layer on an aluminum former's thickness.
My guess is that a deep penetration oxidized aluminum (thinner tube than would ordinarily work with just aluminum), would work just as well (..and perhaps better depending on how much of it was turned into corundum).
You can net a tube that's thinner (all-else-equal).
This allows the driver to narrow the gap (between top plate and pole piece): increasing field strength in the gap. OR you could increase VC winding layers for a similar gap size of a single VC winding layer on an aluminum former's thickness.
My guess is that a deep penetration oxidized aluminum (thinner tube than would ordinarily work with just aluminum), would work just as well (..and perhaps better depending on how much of it was turned into corundum).
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I ordered morel cat308 to try.
Already installed tweeters and tweaked crossover.
Detail is okay lot better than before.
Sound signature wise wooden stiks sound more natural than before. But morel is very very soft sounding tweeter.
Already installed tweeters and tweaked crossover.
Detail is okay lot better than before.
Sound signature wise wooden stiks sound more natural than before. But morel is very very soft sounding tweeter.
But they have an incredible power handling, some remove the ferrofluid on some model and noticed a better trade off. Easy to do, in the meantime if you want to put again FF it's sometimes impossible to get exactly the same FF grade ...
you can try a Mox as resistor if you find a cement to soft with such a tweeter and according the power response you perhaps try with less Z also... or put a 1 uF // to the taming resistor to lift the 10K 20k hz range.
you can try a Mox as resistor if you find a cement to soft with such a tweeter and according the power response you perhaps try with less Z also... or put a 1 uF // to the taming resistor to lift the 10K 20k hz range.
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