CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS
Lobby => Headphone Measurements => Topic started by: Marvey on June 27, 2012, 01:16:06 AM
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#1 s/n 12xxxx
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=1558;image)
This one sounded notably "odd." Not horrible, but just plain odd. I don't know why this one doesn't have that little kick at 6kHz.
#2 s/n 13xxx
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=1562;image)
This one sounded warm and actually pretty good. Unevenness in the midrange was evident.
#3 s/n ?
(http://www.changstar.com/index.php?action=dlattach;topic=167.0;attach=1544;image)
This one actually sounded a bit bass light. I am most suspicious of this measurement. Will try to reacquire or if not just junk this measurement if I get another one.
#4 s/n 119XX
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=1564;image)
Less bass than #2. Rolled off upper midrange/treble compared to both #1 and #2. Channel matching is off, but given closeness from midrange to treble, probably not going to be noticeable. Subjectively, this one sounds rolled-off in the treble with some un-eveness in the bass and especially mids.
#5
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=2146;image)
#6 s/n 12xxxx
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=2144;image)
Slight channel imbalance as Anax noted. Bass lite, sounds midrangy.
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DT1350 #4 Measurement #2. June 26, 2012. I removed the DT1350 from the measuring rig and proceeded to listen to it. I then measured it again:
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=1570;image)
DT1350 #4 Measurement #3. June 27, 2012. Reset the rig and re-measured.
(http://www.changstar.com/index.php?action=dlattach;topic=367.0;attach=1582;image)
DT1350 Positional Measurements: http://www.changstar.com/index.php/topic,362.msg5796.html#msg5796 (http://www.changstar.com/index.php/topic,362.msg5796.html#msg5796)
They are not as sensitive to positioning on the measuring rig nor my ears as the some fans claim.
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This is too good. For the past week i've been posting apologetic bullshit on HF's 1350 thread over the last measurement because i assumed that was gathered from the set I sent purrin along with the 404/340. All the while thinking i was deaf because i didn't hear the fr potholes in the bass & treble. Consolation prize: my pair still has shitty measurements, but these at least are better than #3 and make more sense in explaining what I heard and liked about them.
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They don't sound anywhere close to HE6's though.
Cranking them up, they are somewhere between pretty good and not bad. The dips are obvious. No ringing except for that spike in the last octave, which is only noticeable when cranked up, and even then not that offensive. Little bit too much bass for me in respect to the rest of the spectrum. I don't notice the channel imbalance, but I would like to take more measurements to make sure.
Good CSDs. They are not as clean, clear, or fast sounding as some of the guys in the HF DT1350 thread would have you believe. But then again everything is relative. (stats are my reference.) An enjoyable inoffensive listen.
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Another measurement of the same #4 unit after resetting the rig (posted 2 above). Bottom line: they each sound a little different to me. Some are clearer sounding, some have treble issues, some are bass-lite, etc. Take the measurements as further proof or something to argue over.
I'm just going to go with RD's call on this: box of chocolates
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Good repeatability on those two measurements....
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DT1350 harmonic distortion
I double-checked... yes, they are that different between channels.
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We need a new term for this kind of thing. Beyer-Fail or something...
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Two additional DT1350 acquired. Serious Beyer DT1350 FAIL
See #5 and #6: http://www.changstar.com/index.php/topic,367.msg5907.html#msg5907 (http://www.changstar.com/index.php/topic,367.msg5907.html#msg5907)
On the bass seal issue and positional measurements, see: http://www.changstar.com/index.php/topic,362.0.html
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When I had my pair, it sounded most like #6. I actually enjoyed it quite a bit, but I ended up liking the M50s more, despite the portability differences.
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Something interesting about these is that while unit to unit variation is extreme, each unit's drivers (L and R) are generally matched to that unit's FR. For example, both drivers in pair #6 have the same severe dip at 15hz. And both driers in pair #3 have a severe dip at 175hz and another at 7k, with the same wild peak characteristics. That seems like considerable evidence that Beyer knows how much variation there is between units, because they are measuring drivers well enough to match them between units that have wildly different FR's. Unless their system is completely automated, but it seems like someone must be there supervising that process. This has to be some of the craziest driver matching ever.
it's worth noting that the pair with the worst most wonkiest FR, has the best driver matching. It's pretty funny if you think about it.
You could call this something like micro-QC, macro-FAIL.
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^ Haha, it's "Systematic Chaos", like the Dream Theater album.
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Pretty strange indeed. Wouldn't such a parellelism suggest that the source of variation may be somewhere else rather than with the drivers? Pads for instance, or damping - if there is any in case of the DT1350. (With the T1 there isn't). Can't imagine that BD would take the effort of closely matching off spec drivers.
(BTW: Hi there, what a great place! Thanks, purrin, for all the effort of measuring those phones and to all of you for providing your knowledge & experiences!)
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Holy cow??
WTF is going on here?
I guess that explains it. My first two sessions with the DT1350, I was convinced. This is the best thing to have happened to portable headphones!!
Then further meets and auditions after and I felt these had a strange.... hollow.. cave-like presentation. Still great sounding for a small portable. But strange.....
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My choclat (ser# 10356) tastes a bit like the first one out the box but with better matched drivers (educated guess)
I use it with HD25 pads for much improved comfort, it appearss to tone down that 300Hz part slightly but still use it with a slight (alas digital) EQ centered around 300Hz (-2 dB)
Mine had the name plate falling off so used a bigger patch of double sided sticky tape. :)p2
It's my 2nd best HP and to me is the best sounding portable I own(ed).
I really like it.
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I had ordered the new pads Beyer makes for the newer versions (DT1350-facelift and DT1350CC).
These newer phones have larger diameter pads, 67mm vs 61mm and are softer and create a better seal which is a major pain with the T50P and DT1350.
Beyer also has (fake) Nubuck Leather pads (62mm diameter) that are less sweaty, a bit velour like so to speak.
Beyer claims they do not change the sound so thought I would put it to the test as I could not find any comparative plots anywhere.
They may not be accurate in an absolute sense (though not far off) but do show the differences between the pads.
(http://diyaudioheaven.files.wordpress.com/2014/06/all-dt1350-pads-compared.png?w=921&h=645)
I have some more detailed info on my website.
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Thanks for this! I've always wondered if new pads would be worth it.
Subjectively, which do you prefer?
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So the stock pads still have the highest bass response and the least treble?
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In my case they did.
To make sure it wasn't a seal or other problem I remeasured everything twice and also applied a bit more pressure and used 2 different setups but the original pads always showed a few dB moar bassss.
It sounds a bit 'wonkier' in the mids (a bit more hollow) with all of these pads BUT those that weren't able to get a good seal with the original pads may find it sounds better with the 67mm pads because it is MUCH easier to get a seal and a bit more comfortable as well.
Personally I keep using the HD25 pads BUT use it with EQ (to get rid of the honky mids and bring back bass)
I never cared much for the original pads.
The 67mm are comfortable but not as comfy as the HD25 pads.
The NL pads (faux Nubuck Leather) are less 'sweaty' than the pleather pads but rest on the inside of the Pinnae where the 67mm (and HD25) cover my whole pinnae.
The pleather are ever so slightly less 'peaky' sounding in the treble... hardly worth mentioning though.