Tyll Hertsens Blog

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Tyll Hertsens  |  Jun 01, 2011  |  7 comments

Hi all! I'll be heading off to T.H.E. Show Newport on Friday, and I though it would be a good idea to let you guys know what's up with InnerFidelity for this month.

Tyll Hertsens  |  May 31, 2011  |  11 comments
I've just completed the June measurements update. All the new cans are on the Headphone Datasheet Downloads page, and in the All Graphs PDF.

New headphones this month include:

  • Many of the Ultrasone line.
  • The new Shure SRH950.
  • The New Beyerdynamic DJX-1 (it's pretty good).
  • Numerous Denon IEMs.
  • Grado GR8.
  • Spider Cables realvoice IEM
  • Second measurements of Beyer's Tesla cans.
  • And ... measurements of the latest LCD2 ... now with more highs!
Tyll Hertsens  |  May 19, 2011  |  28 comments

In preparing my article “How Planar Magnetic Headphones Work” I became enamored of the work being done by DIYers building their own Orthodynamic cans over in the "Orthodynamic Roundup thread on Head-Fi. The blood, sweat, and tears invested in building and modifying vintage Yamaha Orthodynamics, and cans like the Fostex T50RP is simply stunning, but more striking is the sense of fun and camaraderie so clearly evident in their headphone play that I simply can’t resist trying to find a way to enter into the party in some way.

I think I’ve figured out what I can do.

Tyll Hertsens  |  May 16, 2011  |  11 comments

There is a story in Headphonedom that will not go away … ever: The Dangers of Headphone Listening. Studies show significant increases in hearing damage … especially to youngsters who tend to listen very loud. Other than the iPod’s new ability for parents to set a volume limit on the device, little has come along to mitigate the problem other than draconian legislative measures trying to control volume limits on devices. (Which is ridiculous in my view both from a personal liberty standpoint, and from the fact that it makes portable devices less able to drive a variety of aftermarket headphones.)

Well, Stephen Ambrose claims to have solved the problem ...

... and my skeptomometer has been beeping like crazy. Let’s have a look …

Tyll Hertsens  |  May 11, 2011  |  14 comments

They've been around since the 70's and never really caught on, but all of a sudden a couple small headphone makers have entered the fray with new planar magnetic headphones and ... Oh. My. Gosh. ... they're very good.

Before reviewing some of these headphones, I thought it would be a good idea to write an article describing how this "what once was old is new again" technology works. So come along for a ride as I describe how planar magnetic headphones work ... and how I busted mine all to pieces.

Tyll Hertsens  |  May 05, 2011  |  15 comments

By now, most folks are aware of the potential for hearing loss by playing music too loud on headphones. I won’t bother you with it yet again. I’m going to try to take another approach. If you are turning the volume up to loud levels, you’re just throwing all that money you spent on great sound out the window. Here’s why.
Tyll Hertsens  |  Apr 30, 2011  |  17 comments
I've been doing quite a bit of clean-up and re-organizing with the measurement datasheets. The main objective was to sort the headphones into various types: Full-size open; full-size sealed; earpad open; earpad sealed; in-ear; ear bud; noise cancelling; and wireless.

I've also added a goodly number of new headphone measurements. All measurements can be seen one page at a time on the Headphone Datasheet Download Page, or all measurements can be downloaded at once in the Headphone Measurement Datasheet .pdf booklet.

Tyll Hertsens  |  Apr 24, 2011  |  62 comments

The nice folks over at AKG decided to send me a bunch of Quincy Jones headphones, including three Q701s! That's good news for both you and me. For me, because it will allow me to do some experiments I've been wanting to do for a long time. The AKG K701, now reborn as the Quincy Jones Q701, is notorious for needing hundreds of hours of break-in before they sound right. I want to see if that can be measured, and in this article I'll show you the first sets of measurements.

It's good news for you, because when all is said and done, I'll give away two pairs of the Q701 headphones to some lucky reader.

So, let's talk about break-in, shall we...

Tyll Hertsens  |  Apr 01, 2011  |  19 comments
Today is the soft launch of InnerFidelity; the official launch date is slated for May 1. I welcome you to the early beginnings; please excuse the construction zones. Over the next month I will be alternately writing headphone reviews and building the backbone of the site. But I think a few more thoughts are in order...
Tyll Hertsens  |  Mar 30, 2011  |  3 comments
For those of us who really want a clear and comprehensive overview of how the human hearing system works to identify the location of sounds, there is one book cited above all others that serves as the text on the subject: Jens Blauert's "Spatial Hearing: The Psychophysics of Human Sound Localization."
Tyll Hertsens  |  Mar 25, 2011  |  0 comments
Electron microscopes are filled with myriad and dissimilar technological hurdles to overcome: high voltage adjustable power supplies; precise and adjustable analog scan generators; adjustable magnetic lenses; precise and finely adjustable mechanics for physically moving the sample; and optional complex systems like x-ray spectrometer analysis of specimen chemistry. SEMs are COMPLEX!

I just can't believe an SEM is a viable DIY project ...

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