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Posts by Tyll Hertsens

Yep, you'll notice I haven't reviewed the LCD-XC either. Haven't done the direct comparison but figure I'd like the Alpha Dogs better.   Oh and the Alpha Dogs have better isolation than any sealed full-size headphone I've measured.   @Dan: Great respect for you, mate. We'll just have to see this of the beauties of the world.
FWIW, I thought the Alpha Dogs measured very nicely for a T50RP variant.   I've NEVER measured a headphone with 0.01% distortion---though to be fair that's below my acoustic noise floor so I wouldn't be able to even if the cans got that low.   Very few headphones measure below 0.1% on my system.   1% THD is usually considered the point at which it's audible. Even then, it's the make-up of odd/even that count to your ears, for the most part.   The only problems I...
I've got the XL and will be reviewing it separately.
Sorry. :(
Hi Guys, got the X2 in and measured. One thing to note: It looks like the pad actually has an acoustic circuit in it.  There's a hole labeled "Align Pin". It appears to allow air from in front of the driver to be routed to behind the baffle plate. Not sure what it does yet, I'll probably block the hole and remeasure to see if something hapens.  At any rate, while the pads are replaceable, it would be virtually impossible to replicate this circuit, so pad rolling is not in...
 I agree with your post in general, but not sure I quite agree with this. I think the human auditory system is stunningly sensitive and able to hear things that are in the noise of objective measurements. Our subjective impression of those subtleties is up for grabs though. 
 I do try to characterize headphones relative to neutral (not that I or anyone else really knows what that means yet), so when I say bright, I mean bright relative to neutral and not relative to my preferences. Bias is no doubt likely to slip in there, however. 
 Someone studied it a while back and wrote an article for InnerFidelity....can't remember the title of the article but most of the uncertainty is in the high frequencies. It was with an HD 800 though so placement doesn't make much diff in the lows. With the Oppo I'd say theres some uncertainty...maybe a two-three dB. They're somewhat insensitive to position as the pads are designed to leak, but just today I was measuring the PM-1 with various pads and sensed that sometimes...
I love this book:
Fess up, Rob, you've got sources for reference cans, don't you?  :P
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