So, I'm starting a project along the lines of a Helium -- just a little tyke (6.5" high, 4.5" W, but 6" D), and rather than the ND16FA-6, was wanting to use the ND25HF-4. It looks a lot smoother and flatter, and it should let me push the X-over frequency down (which I think I want to do), and if I'm not mistaken I think it is a step up from the ND16. I built a pair of overnight sensations, and I think the ND20FA-6 sounded pretty decent. Maybe they aren't that different (same family)?
Here's the problem:
Tweeter be big -- box be small!
Dayton Audio ND25FA-4 1" Soft Dome Neodymium Tweeter
There are a couple of options here:
1) buy the version without the face-plate and figure out how to mount it
Dayton Audio ND25FN-4 1" Silk Dome Neodymium Tweeter Element 4 Ohm
2) modify the face-plate into a square 2 1/16", which looks doable I could do that, but it looks like it might make the face-plate a bit flimsy, but I could reinforce that if necessary
Has anyone done either of those two things? Or, does anyone know if there are options for changing the face-plate. It's not clear whether the voice coils can be replaced, or whether the tweeters can be disassembled (which would make modifying the tweeter a bit easier).
Thoughts?
Other tweeters to consider:
HiVi TN25 Fabric Dome Tweeter (small rectangular flange that would work)
Tang Band 25-1166SJ 1" Neodymium Soft Dome Tweeter (flange could be modified)
Peerless by Tymphany D26NC56-06 1" Fabric Dome Tweeter 6 Ohm (might work as-is, or could modify)
Here's the problem:
Tweeter be big -- box be small!
Dayton Audio ND25FA-4 1" Soft Dome Neodymium Tweeter
There are a couple of options here:
1) buy the version without the face-plate and figure out how to mount it
Dayton Audio ND25FN-4 1" Silk Dome Neodymium Tweeter Element 4 Ohm
2) modify the face-plate into a square 2 1/16", which looks doable I could do that, but it looks like it might make the face-plate a bit flimsy, but I could reinforce that if necessary
Has anyone done either of those two things? Or, does anyone know if there are options for changing the face-plate. It's not clear whether the voice coils can be replaced, or whether the tweeters can be disassembled (which would make modifying the tweeter a bit easier).
Thoughts?
Other tweeters to consider:
HiVi TN25 Fabric Dome Tweeter (small rectangular flange that would work)
Tang Band 25-1166SJ 1" Neodymium Soft Dome Tweeter (flange could be modified)
Peerless by Tymphany D26NC56-06 1" Fabric Dome Tweeter 6 Ohm (might work as-is, or could modify)
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I made a round maplin tweeter square by taping over the dome ( it was recessed behind the face plate ) and zipping through a band saw. If you could get away with one flat, or two flats on opposing sides it should be ok.
Looks like all 4 sides will have to be trimmed, but I think it's doable...
Also, I think it might be easier to make a jig to countersink the squared-off face-plate, than something that is partially truncated.
Also, I think it might be easier to make a jig to countersink the squared-off face-plate, than something that is partially truncated.
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