[germay0653]

  Is Tesla an important measurement? I was going to compare to see how that 1.5 Tesla figure compared to other headphones (like Fostex's T50RP similar to the MrSpeakers stuff, or even some of the other Audeze stuff like the lower EL-8) but that kind of info seems hard to come by.

 
The higher Tesla figure helps to better control the drivers movement.  Using the car analogy, it starts and stops faster making it more accurate as far as timing of the signal is concerned.

 

[Maconi]

 

  Is Tesla an important measurement? I was going to compare to see how that 1.5 Tesla figure compared to other headphones (like Fostex's T50RP similar to the MrSpeakers stuff, or even some of the other Audeze stuff like the lower EL-8) but that kind of info seems hard to come by.

 
The higher Tesla figure helps to better control the drivers movement.  Using the car analogy, it starts and stops faster making it more accurate as far as timing of the signal is concerned.

Thanks. So basically only the LCD-4, TH900, and then maybe some of the Beyerdynamic headphones have a high Tesla? Or do a lot of headphones have 1-1.5 Tesla and just not advertise it?

 

[Whitigir]

Thanks. So basically only the LCD-4, TH900, and then maybe some of the Beyerdynamic headphones have a high Tesla? Or do a lot of headphones have 1-1.5 Tesla and just not advertise it?

Normally headphones are placed below 1 tesla for many products, even with higher-end tiers....so to move the headphones more efficiently, they have larger voice-coil wires, and more coil winds which is (higher-resistant) and you would be seeing 500-600 ohms impedance headphones drivers. It is because of weaker magnets, but wanting more speeds, so they need more power to do the bidding.....Hd800 ? But then, there are ways more into a physicality of a headphones voice-coils design....that includes body-gaps, tolerances, materials body on the coils...etc....and then diaphragms, the grooves, the materials....sizes....etc. Lets not get there!

So, the problem of higher Tesla is ? Too sensitive, too fast, and too powerful. Have you seen the diaphragms design on Fostex ? All Fostex has minimal 1.0 Tesla. Yeah, instead of it designed to protrude foward, and has the grooves (which creates distortions on larger drivers, and or too fast movements)....it has the diaphragms to recede inward....and how in the hell or what is behind it....not my places to get there.

Just as what you thought, many don't advertise about this spec, but many many do not have 1 tesla or more . Why don't we stick with what we know ? And buy fostex if you want high tesla magnets

 

[Whazzzup]

the mk2 doesnt appeal to me, no need to go balanced. chord and a8 are not balanced. Just going back to the dampening discussions a few posts ago, its funny to see what fostex put in the cups as dampening in the first place. the lawton mod has made me enjoy the 900 experience further.

 

[Maconi]

Thanks. So basically only the LCD-4, TH900, and then maybe some of the Beyerdynamic headphones have a high Tesla? Or do a lot of headphones have 1-1.5 Tesla and just not advertise it?

Normally headphones are placed below 1 tesla for many products, even with higher-end tiers....so to move the headphones more efficiently, they have larger voice-coil wires, and more coil winds which is (higher-resistant) and you would be seeing 500-600 ohms impedance headphones drivers. It is because of weaker magnets, but wanting more speeds, so they need more power to do the bidding.....Hd800 ? But then, there are ways more into a physicality of a headphones voice-coils design....that includes body-gaps, tolerances, materials body on the coils...etc....and then diaphragms, the grooves, the materials....sizes....etc. Lets not get there!



So, the problem of higher Tesla is ? Too sensitive, too fast, and too powerful. Have you seen the diaphragms design on Fostex ? All Fostex has minimal 1.0 Tesla. Yeah, instead of it designed to protrude foward, and has the grooves (which creates distortions on larger drivers, and or too fast movements)....it has the diaphragms to recede inward....and how in the hell or what is behind it....not my places to get there.



Just as what you thought, many don't advertise about this spec, but many many do not have 1 tesla or more

. Why don't we stick with what we know ? And buy fostex if you want high tesla magnets

 


Thanks for the explanation. I've always wanted the TH900 and the MK2 might just push me over the edge. The only problem I've ever had with them is the poor isolation (sound leaking in/out) as I primarily use headphones in a quiet office environment. Maybe the MK2 will finally fix that?

 

[Whitigir]

Thanks. So basically only the LCD-4, TH900, and then maybe some of the Beyerdynamic headphones have a high Tesla? Or do a lot of headphones have 1-1.5 Tesla and just not advertise it?

Normally headphones are placed below 1 tesla for many products, even with higher-end tiers....so to move the headphones more efficiently, they have larger voice-coil wires, and more coil winds which is (higher-resistant) and you would be seeing 500-600 ohms impedance headphones drivers. It is because of weaker magnets, but wanting more speeds, so they need more power to do the bidding.....Hd800 ? But then, there are ways more into a physicality of a headphones voice-coils design....that includes body-gaps, tolerances, materials body on the coils...etc....and then diaphragms, the grooves, the materials....sizes....etc. Lets not get there!



So, the problem of higher Tesla is ? Too sensitive, too fast, and too powerful. Have you seen the diaphragms design on Fostex ? All Fostex has minimal 1.0 Tesla. Yeah, instead of it designed to protrude foward, and has the grooves (which creates distortions on larger drivers, and or too fast movements)....it has the diaphragms to recede inward....and how in the hell or what is behind it....not my places to get there.



Just as what you thought, many don't advertise about this spec, but many many do not have 1 tesla or more

. Why don't we stick with what we know ? And buy fostex if you want high tesla magnets

 


Thanks for the explanation. I've always wanted the TH900 and the MK2 might just push me over the edge. The only problem I've ever had with them is the poor isolation (sound leaking in/out) as I primarily use headphones in a quiet office environment. Maybe the MK2 will finally fix that?

I doubt that, because it is the principles of fostex designs . Sony also do that to Z7...semi-open

 

[Whazzzup]

doubt it as well but you can check em out

 

[tomatoshoe]

For those that are still curious about the stock batting material... Finally got the courage to take apart my TH900.
 
This is what they use:
 

 
It seems kind of cheap I guess, but Fostex knows what they're doing so I can't complain.
 
I have a Lawton DIY Kit Level 2 coming in.. I'll see how they sound after I modify mine.

 

[Whitigir]

For those that are still curious about the stock batting material... Finally got the courage to take apart my TH900.

This is what they use:




It seems kind of cheap I guess, but Fostex knows what they're doing so I can't complain.

I have a Lawton DIY Kit Level 2 coming in.. I'll see how they sound after I modify mine.

Those are used to minimize the standing waves accumulations and resonances bouncing around (grains, distortion, loss of details) while having the 3D volumetric the headphones need (space and layering). Pricing has no purpose in the correct usage of acoustic dampening. Too much dampening, and you eliminate the use of a rare wood "Japanese Birch". Which also utilize Urushi as the paint sealant on the outside to contribute into the uniqueness of TH900 sounds, slightly boosted in the bass/trebles frequency but yet still neutral....!

It is not that Fostex doesn't know about dampening. They intend to tune TH900 this way, because it was meant to be critical listening, any extensions of bad recording can be very harsh in trebles and vocals. TH900 is Premium Refrence Headphones . On good mastered tracks the trebles is just "beautiful, vivid, mind melting" tones.

*notice* the square cut of the stuff ? Why was it not round to completely cover the chambers ? I look into th900 design, and I have to say that everything is specifically designed to achieve the stock sounds, which is meant to be "critical listening"

 

[xingfei]

.

 

[Whitigir]

Would anybody know if Fostex is going to discontinue production of the TH-900 in favor of the TH-900 Mk II? (sorry if I missed a clarification earlier)

It would be best if you could help us calling them and find out about it . I wish I was in Japan and speak Japanese

 

[Whazzzup]

Would anybody know if Fostex is going to discontinue production of the TH-900 in favor of the TH-900 Mk II? (sorry if I missed a clarification earlier)

Why would fostex stop making a non balanced hp. Non balanced represents the majority of dac amp owners. This new can now addresses the needs of balanced amp owners. Personally I'm not sold on balanced and bought an unbalanced fostex a8 amp and all chord products are not balanced. Granted those that have balanced love em so that's my guess for why mk11

 

[obsidyen]

Why would fostex stop making a non balanced hp. Non balanced represents the majority of dac amp owners. This new can now addresses the needs of balanced amp owners. Personally I'm not sold on balanced and bought an unbalanced fostex a8 amp and all chord products are not balanced. Granted those that have balanced love em so that's my guess for why mk11

TH900 MK2 comes with removable unbalanced cable. Balanced cable is sold separately. Thus, out of the box, MK2 is unbalanced as well. Now that cables are removable, TH900 MK1 will be discontinued.

 

[obsidyen]

  Would anybody know if Fostex is going to discontinue production of the TH-900 in favor of the TH-900 Mk II? (sorry if I missed a clarification earlier)

Yes, most likely. MK2 will come with unbalanced and removable cable. Balanced cable will be sold separately. Thus, there's no reason to produce MK1 anymore.

 

[Whazzzup]

Ahh I see