[Faust2D]

Quote:

Originally Posted by ludoo /img/forum/go_quote.gif But the difference is not only in the quantity of bass: what the HP3 have which I did not find in the other orthos I tried (HP50, YH1, SFIs, Pro30) is spatiality: they have soundstage, the sound has depth, instruments are placed with some precision in space. And the sound has much more weight or body or whatever you want to call it.

Note also that Yamaha was using a lot of different magnet types and YHD series is a proof that different magnet makes otherwise identical headphones sound very different. The proof is YHD-1 vs. YHD-2, as two should ve very bass shy and YHD-1, at least the one I have is not that way at all.

I would imagine the diaphragm tension plus the magnet type would create a lot of different sound variations.

 

[Faust2D]

Quote:

Originally Posted by smeggy /img/forum/go_quote.gif I'm hoping this will be the best combination yet. I'll find out when the new drivers and pads arrive. Hopefully ludo will approve of the new look and it will appease his Italian design sensibilities

Will you be using something to cover the drive, like pantyhose fabric? If dust, hair or a spec of plastic gets in there you are bound for some nasty buzzing sounds.

 

[ludoo]

Quote:

Originally Posted by Faust2D /img/forum/go_quote.gif I would imagine the diaphragm tension plus the magnet type would create a lot of different sound variations.

Diaphragm tension is different between the HP3 and 50 I have. It's also possible that the magnets are indeed different.



On the left the HP3 driver, on the right the HP50. The pic is misleading, as in reality the metal connector on the HP3 is shiny while the HP50 one is slightly rusty. What the photo shows is the different shade of color of the two magnets: bluish in my HP3, grayish in the HP50.

 

[Faust2D]

Quote:

Originally Posted by ludoo /img/forum/go_quote.gif Diaphragm tension is different between the HP3 and 50 I have. It's also possible that the magnets are indeed different. On the left the HP3 driver, on the right the HP50. The pic is misleading, as in reality the metal connector on the HP3 is shiny while the HP50 one is slightly rusty. What the photo shows is the different shade of color of the two magnets: bluish in my HP3, grayish in the HP50.

Maybe the magnet type is different. HP-3 is using Sintered Ferrite, 46mm Diameter magnets, that was the cheap and more common version also used by HP-1, 2 and YH-1, 2. YH-100 used Anisotropic Ferrite for example and more expensive YH-1000 used an even better Cerium Cobalt magnets. It's might be the case that HP50 was using some other magnet variation, but it should be using Sintered Ferrite since this was the standard in cheaper Yamaha models. So I am at a loss at what other magnet type it can use. You can take a look in Wikiphonia Yamaha section at the brochures and additional info.

 

[Faust2D]

I figure there is no other place to post a request like this. I am looking for good quality pictures of YHD-3, HP-2/3 and YH-2/3 headphones to incorporate in the wiki. Thanks in advance fellow Orthodynamisti

 

[smeggy]

Quote:

Originally Posted by Faust2D /img/forum/go_quote.gif Will you be using something to cover the drive, like pantyhose fabric? If dust, hair or a spec of plastic gets in there you are bound for some nasty buzzing sounds.

That was just one of the old broken 32ohm drivers I use to try stuff out and test for size, the proper ones will be fully covered.

 

[smeggy]

Quote:

Originally Posted by ludoo /img/forum/go_quote.gif As promised, I took pics last night while modding Kabeer's HP50s. Here is a guide on how to replicate my mod, with a slight difference at the end for the bassy versions. All pics are clickable to get the large size images. .........

Great tutorial Ludo, fun read and good pics.

 

[GuyMe]

Quote:

Originally Posted by Faust2D /img/forum/go_quote.gif Note also that Yamaha was using a lot of different magnet types and YHD series is a proof that different magnet makes otherwise identical headphones sound very different. The proof is YHD-1 vs. YHD-2, as two should ve very bass shy and YHD-1, at least the one I have is not that way at all. I would imagine the diaphragm tension plus the magnet type would create a lot of different sound variations.

The general consensus is that the magnet only effects efficiency.

 

[Faust2D]

Quote:

Originally Posted by GuyMe /img/forum/go_quote.gif The general consensus is that the magnet only effects efficiency.

I doubt that diaphragm tension and magnet type only effect efficiency and have not effect on sound signature. What is this consensus you talk about?

 

[ericj]

wualta has stated that magnets only or mostly affect sensitivity. It's probably true. I can't think of a reason they would affect sensitivity in a nonlinear way.

diaphragm pliance on the other hand directly affects frequency response in that it, along with the surface area of the diaphragm, determines the self-resonant frequency.

This is why the non-tensioned PMB drivers are often bass-lite with no possibility of help. It just doesn't move around too easy.

 

[Faust2D]

Quote:

Originally Posted by smeggy /img/forum/go_quote.gif That was just one of the old broken 32ohm drivers I use to try stuff out and test for size, the proper ones will be fully covered.

Cool. Looked scary there for a moment

 

[Faust2D]

Quote:

Originally Posted by ericj /img/forum/go_quote.gif wualta has stated that magnets only or mostly affect sensitivity. It's probably true. I can't think of a reason they would affect sensitivity in a nonlinear way. diaphragm pliance on the other hand directly affects frequency response in that it, along with the surface area of the diaphragm, determines the self-resonant frequency. This is why the non-tensioned PMB drivers are often bass-lite with no possibility of help. It just doesn't move around too easy.

No doubt that tension together with sensitivity change caused by magnet would affect the sound.

But I suspect that magnet type might effects the sound as well. My logic is as follows, stronger force and more even magnetic field of the magnet theoretically will create a more uniform movement of the diaphragm thus affecting the distortion at specific frequencies. Plus control of the driver might be a bit better with better magnets, thus better transients.

P.S. But my mind is polluted by Conceptual Continuity nonsense so pay no attention to my ramblings.

 

[Serge44]

Quote:

Originally Posted by wualta /img/forum/go_quote.gif Why my HP-3 doesn't have the same sound his has... I have no idea.

My Yamaha HP-3 has very small amount of bass. They are definitely NOT bass-heavy cans as other people describe them.

 

[smeggy]

Quote:

Originally Posted by dBel84 /img/forum/go_quote.gif Indeed, that will be very useful for future reference. @ Smeggy ; just fantastic - you keep pulling the aces out of your sleeve. Remind me never to play poker with you. One question; does the plug sit directly ontop of the driver or is there another layer of felt beneath that? I really need to keep some form of mod diary so that I know what has been tried and more importantly, what you have found to work best..dB

Oops, missed this one. I normally sit the plug directly on the back. Because the new felt is even more dense than the other stuff I'll have to try some different configurations to see what works best.. or not. I won't find out until the drivers arrive.

 

[smeggy]

Quote:

Originally Posted by Serge44 /img/forum/go_quote.gif My Yamaha HP-3 has very small amount of bass. They are definitely NOT bass-heavy cans as other people describe them.

That's very strange. It would appear that there are numerous versions floating about. I suppose this would explain why some like them and some rank them fairly low. Maybe they had the drivers or diaphragms sourced from a few different companies, or the design was changed over time.