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Beyerdynamic to launch new top headphone at IFA -- called T1 - Page 20

post #286 of 3967
9/6/09 at 1:15pm
Quote:
Originally Posted by capslock View Post
The T1/A1 combo at IFA will have a unique sound. The A1 is 'around' 100ohms while most consumer headphone amps seem to stick with zero impedance - so the difference could be quite significant.
You sure about the zero impedance? Sure most headphone amps are zero impedance? Would have thought for impedance matching, amps would vary depending on their use.
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Gear mentioned in this thread:

Beyerdynamic Tesla T1
Sennheiser HD 800 Headphones
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post #287 of 3967
9/6/09 at 1:47pm
Quote:
Originally Posted by Ruffle View Post
I don't have my mobile phone next to my head for hours at a time. I use it for maybe 1-2 minutes a few times a day.

Either way, the stats on these Beyers are simply incredible. They have more "magnetic energy" than my 100 watt, 3 way speaker, almost same as my tweeters, more than the 12" woofers and mids. It's ridiculous.

Just saying for me, I wouldn't be interested in a headphone's feature of having more magnetic flux than a 12" speaker.
The 1.2 Tesla is a flux density specification for the magnetic field in the air gap. Tweeters can have similar or higher B due to their small, tight gaps.
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post #288 of 3967
9/6/09 at 1:50pm
Ruffle, I may be wrong but I think the emf some people think is harmful is the byproduct as a driver, to quote beyerdynamics, "converts the electric signal into acoustic vibrations", and the intensity of that waste emf has no proportional correlation to the advertised 1 tesla thing. If I'm guessing correctly, it should actually generate less emf. But as I said before, if you want less emf you can mod headphones to attenuate the emf. And there's many other things that should be given priority over headphones if you don't like emf. I recommend living in a cave, wear a faraday cage and be grounded at all times.
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post #289 of 3967
9/6/09 at 1:51pm
Quote:
Originally Posted by capslock View Post
The T1/A1 combo at IFA will have a unique sound. The A1 is 'around' 100ohms while most consumer headphone amps seem to stick with zero impedance - so the difference could be quite significant.
Do remember the T1 is rated 600 ohm impedance. I estimate the frequency contouring formed by the voltage dividing will be less than 1dB.
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post #290 of 3967
9/6/09 at 2:49pm
Quote:
Originally Posted by Ruffle View Post
I looked into this business about magnetic flux. Great this Tesla 1, has more than 1.2 tesla of "magnetic energy."

Why would I want this right next to my head?

I have JBL L100 Century speakers and the magnetic flux of the 12" woofer is less than that, and it's 8 ohm, 100 watt speaker and I have never tested how loud it can be, too afraid for my ears and angry neighbors.

So why would I want that much "magnetic energy" from a tiny driver slamming into my ears?

Well, if it sounds good awesome, but I think I will pass.

Also earlier in the thread the dangers of this was passed off easily. It's not just the quantity of exposure, but as Ultrasone's FAQ has stated, it's also about the length of time of exposure. Having these Beyers next to my head for hours at a time, weeks and then years. I haven't done the experiments to prove it obviously, but as it is, I'd be pretty damn paranoid also. These Beyers sound pretty scary to me.
If you dont know what you are talking about, why post?

The radiation every one was panicking about is an ELECTROMAGNETIC RADIATION AT THE MICROWAVE RANGE, which is the one produced by cell phones (1.8 - 1.9ghz) and obviously microwave ovens (2.45ghz). Here, electromagnetic radiation is measured in milliwatt per centimeter squared (mW/cm2). Another type of common radiation people are concerned of is the "extreme low frequency radiation" (ELF) emitted by power lines and electric transformers (around 60hz) and this one is normally measured in Gauss (10,000 gauss = 1 tesla).

What Beyer refers to is the driver's Magnetic Field (magnetic flux density) which is measured in Teslas and is non related to any radiation frequency, and certainly not to extreme low frequency radiation (ELF), it just refers to the "strength" of the magnet. Typical home speaker magnet coils have between 1 to 3 teslas. The more powerful the magnet the more you can design a highly efficient and nuanced driver.

I hope this is clearer, beyer wont give you cancer. And just for the record, Ultrasone refers to the measurment of "harmful" (low frequency) electromagnetic radiation and this is measured in nano teslas. It has nothing to do with what Beyer is meassuring, NOTHING!
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post #291 of 3967
9/6/09 at 3:00pm
It would be funny if beyerdynamic was advertising they had 1 tesla of emf emission.
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post #292 of 3967
9/6/09 at 5:54pm
Quote:
Originally Posted by GuyDebord View Post
If you dont know what you are talking about, why post?

The radiation every one was panicking about is an ELECTROMAGNETIC RADIATION AT THE MICROWAVE RANGE, which is the one produced by cell phones (1.8 - 1.9ghz) and obviously microwave ovens (2.45ghz). Here, electromagnetic radiation is measured in milliwatt per centimeter squared (mW/cm2). Another type of common radiation people are concerned of is the "extreme low frequency radiation" (ELF) emitted by power lines and electric transformers (around 60hz) and this one is normally measured in Gauss (10,000 gauss = 1 tesla).

What Beyer refers to is the driver's Magnetic Field (magnetic flux density) which is measured in Teslas and is non related to any radiation frequency, and certainly not to extreme low frequency radiation (ELF), it just refers to the "strength" of the magnet. Typical home speaker magnet coils have between 1 to 3 teslas. The more powerful the magnet the more you can design a highly efficient and nuanced driver.

I hope this is clearer, beyer wont give you cancer. And just for the record, Ultrasone refers to the measurment of "harmful" (low frequency) electromagnetic radiation and this is measured in nano teslas. It has nothing to do with what Beyer is meassuring, NOTHING!
Good post, thank you! I hope that this clears the matter up once and for all so we can just get back to speculating about this new headphone!
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post #293 of 3967
9/6/09 at 7:45pm
How many people...

...would like to see a closed version of the Tesla with the new angled driver?


(me raises hand!)
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post #294 of 3967
9/6/09 at 8:01pm
Quote:
Originally Posted by jpelg View Post
How many people...

...would like to see a closed version of the Tesla with the new angled driver?


(me raises hand!)
I Second That Emotion
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post #295 of 3967
9/6/09 at 8:16pm
Quote:
Originally Posted by GuyDebord View Post
If you dont know what you are talking about, why post?

The radiation every one was panicking about is an ELECTROMAGNETIC RADIATION AT THE MICROWAVE RANGE, which is the one produced by cell phones (1.8 - 1.9ghz) and obviously microwave ovens (2.45ghz). Here, electromagnetic radiation is measured in milliwatt per centimeter squared (mW/cm2). Another type of common radiation people are concerned of is the "extreme low frequency radiation" (ELF) emitted by power lines and electric transformers (around 60hz) and this one is normally measured in Gauss (10,000 gauss = 1 tesla).

What Beyer refers to is the driver's Magnetic Field (magnetic flux density) which is measured in Teslas and is non related to any radiation frequency, and certainly not to extreme low frequency radiation (ELF), it just refers to the "strength" of the magnet. Typical home speaker magnet coils have between 1 to 3 teslas. The more powerful the magnet the more you can design a highly efficient and nuanced driver.

I hope this is clearer, beyer wont give you cancer. And just for the record, Ultrasone refers to the measurment of "harmful" (low frequency) electromagnetic radiation and this is measured in nano teslas. It has nothing to do with what Beyer is meassuring, NOTHING!
thank god someone with a brain posted in here about this, magnetic flux strength is not radiation, its a measure of force on a charge provided by the magnet. its like gravity, but with magnets...and you dont see people freakin out about living with a constant gravitational force field aka earth :P
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post #296 of 3967
9/6/09 at 10:48pm
Well we had a good ride with (relatively) reasonably priced flagships.
Now we get ring drivers and 1T magnetic fields. How does that translate into better sound again?
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post #297 of 3967
9/6/09 at 11:30pm
Reading the beyer press release and looking at the photo, I don't believe the T1 driver is a ring radiator like in the HD800.

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post #298 of 3967
9/7/09 at 12:12am
Quote:
That master achievement comes thanks to a new magnet system. The neodymium magnet had previously been positioned in the centre of the coil, which severely limited its size due to the flat design of the earpieces.

The developers have now repositioned the magnets into a ring around the coil, allowing for a more than doubling of the magnetic flux density to approx. 1.2 Tesla. Even crossing the magical threshold of one Tesla for a pair of headphones would have been an admirable feat.

At the same time, the new configuration of the magnet system enables a central ventilation hole through the pole cores to prevent sound-disrupting resonances and cancellations.
Ok, it's not one single flat ring magnet like HD800, it's muilt magnets ring around the coil
like this
http://www.madisound.com/manufacture...gnetsystem.php
(some speaker have similar design , i.e. focal's "power flower" )

And the diaphragm seems is not ring radiator-like as HD800 .
(The pic is not clear enough to see where is the coil position and what the diaphragm like)

this is DT880 03's diaphragm
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post #299 of 3967
9/7/09 at 4:50am
Quote:
Originally Posted by jpelg View Post
How many people...

...would like to see a closed version of the Tesla with the new angled driver?


(me raises hand!)
I would order it without hesitation, the d770/600 were one of the best non-leaking I ever had or listened to (except my 4070 which is in another league).
Another high-end non-leaking can would be very welcome, that I know, there is only one in production.....
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post #300 of 3967
9/7/09 at 9:20am
I don't blame people for being confused about the first impressions of the T1. The confusing model line-up from Beyer confuses the crap out of me, and I don't see any cheap or simple way to remove that confusion.

I'd sometime love to try some of the 600 Ohm Beyers though to hear what they are capable of.
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Gear mentioned in this thread:

Beyerdynamic Tesla T1
Sennheiser HD 800 Headphones
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