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Headphone CSD waterfall plots - Page 28

post #406 of 937
Thread Starter 

Audio Technica ATH-M50

I have a bunch of headphones send to me from different people sitting around which I haven't gotten to yet. Hopefully I'll be able to entertain you guys. I don't know how acerbic I'm going to be this time around since I'm pretty tired and feel less cranky than usual.

 

Pre-measurement impressions:

 

They sound OK. Bass isn't overblown. Nice round bass. Decent detail. I don't think it extracts the lowest of low level information. Balance is not too bad. Very dynamic. Lacks the extreme treble - that last bit of air. The FR is not perfect. The regions from the midrange to the treble are not linear - no seriously sharp peaks, but FR is definitely uneven. Trying hard to hear some ringing. Maybe a little bit at 4kHz. Some hash at 9kHz? This is tough or either I'm fatigued. Wish there was more lower to middle midrange. Too much emphasis on upper midrange. I don't hate it, but I don't like it either. UPDATE: Changed my mind on this. Some emphasis in upper mids but OK. I'd have to give a slight nod to this headphone.

 

Measurements on the way...

 

 


Edited by purrin - 11/11/11 at 12:08pm
post #407 of 937
Thread Starter 

Audio Technica ATH-M50 CSD Waterfall Plots

These are not FR plots. The waterfall plots below only go down to 200Hz not 20Hz!

Closed headphones require bass compensation below ~2kHz which is not applied in these plots.

M50 L.txt.jpg M50 R.txt.jpg

 

Other than the 4kHz ringing - short duration (I did say it was hard to hear), the waterfall is fairly clean. There was bump at 9k. The elevated last octave didn't quite jive with my subjective impressions. Starting from the upper midrange on up, the FR is indeed not even, but at least we don't see any nasty sharp peaks. In theory, the fairly fast decay at about the 1ms point should have resulted in that "detail extraction musicality" that I like, but I didn't hear it with this headphone. It is a detailed can though - just missing that lowest of low musical information.


Edited by purrin - 11/2/11 at 8:05pm
post #408 of 937

Someone should get you a Shure 840 which many claimed to be more 'detailed' than the M50.  My listening felt otherwise at the time.

post #409 of 937
Thread Starter 

Depends on what people mean by detail. Usually this is my sense:

 

DETAIL = CLARITY x LOW LEVEL INFORMATION EXTRACTION

post #410 of 937

I'm curious but is there any kind of article or reading material where one can learn how to read these type of plots better? It would be nice to help those (such as me) who can't read them too well and translate into something where it tells you about the headphone.

post #411 of 937
Thread Starter 

LOL I'm too lazy to dig it up and I still owe Tyll an article on this. Try to find it in this thread. If you can't find it, here's a repeated explanation:

 

The CSD plots measure energy content over time across all frequencies based on a "sound burst" (similar to white noise) that excites all frequencies. It is a good tool to see "ringing" and speed and nature of driver decay. You see ringing as ridges over time. For a perfect response, the decay should be immediate. You see a wall (meaning all frequencies are excited) one millisecond. You see absolutely nothing the next.

 

Frequencies from lowest to highest go from left to right. The back most plot you see, at time = 0, is actually the frequency response. Time goes from top to bottom. The entire graph is probably just a few milliseconds.

 

It's commonly thought as frequency response over time - which is sort of what it is, but not really. It requires a lengthy article with plots to explain.

 

OK back to enjoying the K240...


Edited by purrin - 10/19/11 at 9:07pm
post #412 of 937

You could start with reading stereophile's explenation on loudspeaker testing. I've been thinking about generating idealized responses to illustrate time/frequency dependencies but didn't get around yet...

post #413 of 937

Marv: Tyll asked me too some time ago, I smell like another p....ing contest ;). 

post #414 of 937
Quote:
Originally Posted by arnaud View Post

I smell like another p....ing contest ;). 


biggrin.gif

 

post #415 of 937
Thread Starter 

 

Quote:
Originally Posted by arnaud View Post

Marv: Tyll asked me too some time ago, I smell like another p....ing contest ;). 


You can have the job. I'm doing too many things right now. Closing on a house, planning a meet, teaching kids how to read, firing people at work, training new people, picking up amps from Eddie Current, hacking into your bank, etc.

post #416 of 937

I want Arnaud's Euros or Yen.  These Dollars aren't very absorbent and you have to go through a lot of them.

 

 

post #417 of 937
Thread Starter 

AKG K240 Sextett? (@rdevils can you confirm?)

Pre-measurement impressions:

 

Very intimate female vocals - heh - which probably means non-linear FR. These need quite a bit of power. Extremes are rolled off. 3-4kHz peak - if any ringing not serious. Smooth sounding. I kind of like these. Bass doesn't appear to extend low like most closed cans, but it sounds more open in nature. Some treble emphasis. Are these ported or something? Bass doesn't sound aligned - like a ported speaker where the lower bass is a little slow in arriving. It's OK though. I like these! If don't want to take them off for measurements, then I must like them.

 

Continued: http://www.head-fi.org/t/566929/headphone-csd-waterfall-plots/420#post_7834673


Edited by purrin - 10/19/11 at 10:27pm
post #418 of 937
Thread Starter 

 

Quote:
Originally Posted by Anaxilus View Post

I want Arnaud's Euros or Yen.  These Dollars aren't very absorbent and you have to go through a lot of them.


You can write it. I'll edit and correct any technical mistakes, and I'll e-mail off to Tyll and give you the money.

 

post #419 of 937
Quote:
Originally Posted by purrin View Post

 

You can write it. I'll edit and correct any technical mistakes, and I'll e-mail off to Tyll and give you the money.

 


Awesome idea.

 

post #420 of 937

I was not proposed or given any money till now, I'm such a lame negociator ;)

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