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Oppo PM-1: A New Planar Magnetic Headphone! - Page 115

post #1711 of 2548
Problem is just because a chart shows a measurement that falls off after 12kHz doesn't mean the phones actually fall off. High frequency measurements are notoriously unreliable...
post #1712 of 2548
Quote:
Originally Posted by bigshot View Post

Well here is another spec that most people here aren't aware of... For people with normal human hearing (not damaged), sound is pretty much the same for everyone. I've seen charts that measure the sensitivity to specific frequencies on multiple people, and they don't vary more than 4 or 5dB. Listening to music, a difference like that would be barely noticeable.

Good sound is good sound. If something has a flat response, low distortion, a low noise floor and a wide dynamic range, it's high fidelity sound and it will sound natural to everyone.

That's just not true--if HRTF functions were that homogenous there would not be so much difference between a generic HRTF processor like Dolby Headphone and something like the Smyth Realiser tailored to individual HRTFs.
post #1713 of 2548
Quote:
Originally Posted by Maxx134 View Post

I believe it should have forgone the extravagant box and sold well below the $1K threshold,
where it has to fight with the other heavyweight champions of headphones. .

 

Fight? It would kill them all....

post #1714 of 2548
Quote:
Originally Posted by Beagle View Post
 
Quote:
Originally Posted by Maxx134 View Post

I believe it should have forgone the extravagant box and sold well below the $1K threshold,
where it has to fight with the other heavyweight champions of headphones. .

 

Fight? It would kill them all....

Isn't that the whole point of the PM-2?

post #1715 of 2548

One would assume so. A lesser but more affordable version of the PM-1. But I never equate price category with sound quality.

post #1716 of 2548
Quote:
Originally Posted by Joe Bloggs View Post

That's just not true--if HRTF functions were that homogenous there would not be so much difference between a generic HRTF processor like Dolby Headphone and something like the Smyth Realiser tailored to individual HRTFs.

There's a thread on it in Sound Science. Basically, it looks like in the 8 middle octaves, hearing between individuals varies about 4 or 5 dB. Above 10kHz, it varies a lot. But those frequencies are the least important for recorded music.
post #1717 of 2548

Spent an hour or so playing with the 8kHz and 16kHz sliders of the EQ on an AK240 driving the PM-1.

 

Even to these old ears it was amazingly easy to hear adjustments in these areas.

 

There might not be a large quantity of information there, but a proper sprinkling of it graces the edges of cymbals and strings and such in an awefully lovely way.

 

There's plenty of information to be appreciated in that top octave.


Edited by Tyll Hertsens - 4/25/14 at 4:01pm
post #1718 of 2548
Tyll, who's that coming in there? Probably another newbie pretending he knows something....
.
..
... wink.gif
Is a review coming along Tyll? Got a feeling you'll keep us hanging for the week end wink.gif.
post #1719 of 2548

Ha!

 

You'll be hanging for longer than that. I've just got the latest LCD-3 and the new LCD-2 will be in on Monday.

They need to get measured and listened too in comparison with the older vesions I have...

...and then, because there geeks just like you hanging on in the LCD-X, LCD-2, and LCD-3 threads,

I have to review the LCD-X and it's fambly relations, before I get to the PM-1 review.

And I have to compare the PM-1 with the LCD-2 I'll be getting Monday for a little while.

 

'Cuz remember, you really want a month or two of listening before you can really express a grounded opinion.

It'll be a while. I will review it though, I do like it. It's a little polite, but it's yummy.


Edited by Tyll Hertsens - 4/25/14 at 4:14pm
post #1720 of 2548
Quote:
Originally Posted by Tyll Hertsens View Post
'Cuz remember, you really want a month or two of listening before you can really express a grounded opinion.

It'll be a while. I will review it though, I do like it. It's a little polite, but it's yummy.

 

Actually, I was thinking just that when writing the message... How can you possibly form an opinion with all this equipment in a matter of 2-3 days than write a review for the following monday... Glad you are taking the time as especially putting the impressions in the context of existing planers!

 

cheers,

arnaud

post #1721 of 2548

Try it with a parametric equalizer, Tyll. Then you can adjust the Q to avoid spill. The frequency numbers on a graphic equalizer are just the center points. The actual correction might reach down more than an octave below- or in the case of the iTunes equalizer, two octaves.

 

Do you have Sound Forge? The parametric equalizer in there is a LOT more accurate than a consumer 10 band graphic like the one you appear to be using.

post #1722 of 2548

Dude, I been doing this a long time. I've used parametric EQs plenty. 

There's stuff up there, and it's pretty easy to hear on good headphones. 

 

I listen to headphones quite often with regard to the amount of energy they portray in the top octave. 

Lots of hurky jerky measurements in the top octave, and like you say that matters not too much, 

but the total amount of energy there matters quite a bit. 

I can hear a headphone that's too hot above 10kHz no problem.

The PM-1 does not have that problem.

post #1723 of 2548
Quote:
Originally Posted by Tyll Hertsens View Post
 

Ha!

 

You'll be hanging for longer than that. I've just got the latest LCD-3 and the new LCD-2 will be in on Monday.

They need to get measured and listened too in comparison with the older vesions I have...

...and then, because there geeks just like you hanging on in the LCD-X, LCD-2, and LCD-3 threads,

I have to review the LCD-X and it's fambly relations, before I get to the PM-1 review.

And I have to compare the PM-1 with the LCD-2 I'll be getting Monday for a little while.

 

'Cuz remember, you really want a month or two of listening before you can really express a grounded opinion.

It'll be a while. I will review it though, I do like it. It's a little polite, but it's yummy.

Please feel free to forward that info along to the manu's. I love to see demo phones available for that time period:D

post #1724 of 2548

Here is a modern digital recording of Bach's 4th Brandenburg Concerto 1st movement... Segiswald Kuijken / La Petite Band (just happened to be sitting on my desk). This is an Apple Lossless file. The first minute and a half or so is the track as recorded. The second half is only the sound above around 12.5Khz. What do you hear?

 

http://www.vintageip.com/test/freqresponsetest.m4a

post #1725 of 2548

It's amazing to me when I think about how many pretty complicated things in life can be accurately figured out or assessed in less than a day, yet people on head-fi somehow need a MONTH to evaluate a pair of headphones...I still can't get my brain around that one. 

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