CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS

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Author Topic: K550 Frequency Response and CSD Waterfall Plot Measurements  (Read 22589 times)

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rhythmdevils

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #60 on: January 17, 2013, 03:47:12 AM »

The Beyers and D2000 should make bad recordings sound much worse than the T50rp because they have peaky resonance (or in the DT990's case, maybe just elevated treble, I don't know) that the recordings can "light up".  The T50rp shouldn't have ringing that bad, though it depends on the mod.  You can create super uneven response very easily. 

Most of the time, picky about recordings = colored. 

Also, different mods are very different, so you can't really make sweeping generalizations about modded T50rp's.  All you can talk about generally is potential and limitations. 
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donunus

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #61 on: January 17, 2013, 04:42:01 AM »

Most of the time, picky about recordings = colored. 


There^^^^ Sometimes extra bass covers up the coloration of the mids and highs temporarily but in the end, a colored headphone is always going to be picky with recordings.
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Rabbit

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #62 on: January 17, 2013, 06:08:40 PM »

One thing I feel about headphones is that they reproduce music cleanly and it's all very detailed and all that, but when I compare live stuff with the recording in a headphone, it's comparatively shrunk. Particularly in the bass.

The original 'guts' that I hear live is often missing in the headphone, but the notes are all there.

My guess is perhaps that's why we see a raised bass response and treble in so many headphones. An attempt to recreate the 'fatness' of what we often perceive live.

Speakers seem better in this respect. (Or may be I like wall reflections in my music!!)

It makes you wonder exactly what 'flat' is. I have both DT990 and D2000. I prefer the D2000 tbh, but I do realise that it's not a flat headphone, but it goes a long way to reproducing the fruity bottom end that I perceive much more in live music. (The kind of live sound where you 'feel' bass)

Sounds like I need a bass 'vibrator'!!  :gross:
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Deep Funk

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #63 on: January 17, 2013, 09:38:01 PM »

HD250 II Linear...
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Rabbit

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #64 on: January 17, 2013, 10:30:59 PM »

HD250 II Linear...

I have one of those as well!!  :)p3
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Deep Funk

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #65 on: January 17, 2013, 10:33:55 PM »

I had to sell my two Linears to survive December. That headphone kicks ass...

(I'm funk1969 from RG if you haven't noticed already.)
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Chris1967

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #66 on: January 18, 2013, 10:10:17 AM »

I like what I've read. A friend introduced me to this place so I had a read and decided to have a go.

The K550 build is superb except for this tendency for the headband to ring. Mind you, the ringing might be contributing to its sound, which is what I'm getting at, I suppose.

I quite like it, but I do feel that there are problems up top. To me, it can be a bit steely but I get on with it pretty well most of the time. Other times, I quite like the comparative softness of the AT A900 but do miss the lower basement on that one.

Finding a really good closed headphone is difficult imo. I haven't really found one that I could absolutely relax with. At work, I use a DT150, but then that's loud and eq'd so it doesn't really sound the same on home stuff.

Closed headphones always seem like a compromise to me. I'd love to find a cracker so I can cut the world out properly and have excellent sound!!
Hi Ian!! I am Chris from RG!

I think oyur findings are correct and i trust your conclusions... i think they have a top end sparkle... but i also find them superb.
My listening session was very brief though...

I also have modded T50rp and they too have sparkle... on par with my HD800's... on the sparkle that is...

Can you tell us more of your findings on the K550 because of the not so good graph... and distortion figures...
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Rabbit

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #67 on: January 18, 2013, 03:59:22 PM »

Hi Funky. I thought it was you. And Chris!!!! Blimey, it's getting busy on here.  ahoy

This is like a little island between the big USA site and the little UK site. There are surely some wandering sharks in between eh?  walk the plank

Since you two know me, then you'll know that I like the K550 in spite of the problems that come with it. Then again, lots of headphones have problems, but the K550 does quite a lot nicely imo.

The mids are a little more present for me than the HD250 II. They also go lower than you'd think at first listen. You just have to get those huge cups in the right place. The fit for me is fine, but I think some have problems either with ears touching the centre or there's a gap that some are unaware of at the back so they get a nasty bass response.

The funny thing with the K550 is that I feel sometimes that they have an edgy top and so swap to something else. Then returning to the K550, I feel that actually, they're better than the pair I swapped to!!

Getting the sound to click into focus I think is quite important with them and then go no further up in volume or else they have the potential to turn really edgy.

I got a real surprise with them and the K601's though when I had John's DAC's. Both bloomed into something quite special. I have no idea why, but it was then that I felt that they do a lot more than I first thought tbh. The bass in particular seemed to really blossom and has me now thinking much more about the source. My CD player isn't shabby, but they really became something else on my computer setup.

BTW - the T1 is doing a similar thing.

So, in spite of the problems with the K550 stated on here, I enjoy them a great deal. The graphs published are really good and they are useful in pinpointing what you could be hearing with a headphone but there's more to I think than just a graph and the lugs are telling me that I need to look further back from the headphones.

However, I do think Purrin (I think it is) is doing a great job with the measurements and it gives us something solid to lock onto while listening to headphones. It can help us focus on those areas that his graphs pull out as perhaps being a bit dodgy and see if it's annoying enough for us to want to move on to something else.

Sometimes, I listen to a headphone and think that it's really not quite right and can't pinpoint where it is. One that I heard and actually identified a problem was the K701. It was a long way up, but I think I was aware of something wrong and then saw it on a graph later. So I quite like looking at these graphs and also use Goldenears quite a bit nowadays as well.

The BBC seem to favour the DT770's in the broadcast studios. I even like some aspects of them as a closed headphone, although the bass can pound away a bit too much for me. I often wonder about their potential with mods to control that bass a bit more, but as yet, I haven't really found a closed headphone that I'd settle absolutely for.

The Fostex has me interested. Pity about their looks, but from what Solderdude has said about them, they look to be a good buy.

Nice to see some familiar faces.  :wheel:

I also notice quite a few familiar names from the USA site too .....  :)p10
« Last Edit: January 18, 2013, 04:20:41 PM by Rabbit »
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Chris1967

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #68 on: January 18, 2013, 04:50:05 PM »

Good to see you too here and Funky!!

I agree with you 100% about the 550's

Give the T50's a chance but mod them first... they are truly up there with the best if this is done carefully!!

This is a great forum!

Hi to all!!
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shipsupt

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Re: K550 Frequency Response and CSD Waterfall Plot Measurements
« Reply #69 on: April 03, 2013, 02:57:34 PM »



The frequency response (above) shows a very well-balanced output with good levels of fidelity. In fact, the output here looks quite similar to that of the AKG K701, a real reference when it comes to audio quality. Bass frequencies are nicely present and remain stable (on the graph above, bass frequencies look a bit weaker than they actually are because the earphone cushions weren't a perfect fit for our audio test dummy's ears). All in all, bass is reproduced effectively and isn't too boomy. Plus, voices are rendered well as mid-range frequencies are slightly bolstered. High frequencies are a little stronger than the rest of the spectrum. The peak at 8 kHz is something we often see in headphones, but it doesn't cause any noticeable sibilance here.

 facepalm


http://www.digitalversus.com/headphones/akg-k551-p15605/test.html

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