Beyerdynamic T1 Gen 1 vs. Gen 2 Comparison

Discussion in 'Headphone Measurements' started by purr1n, Nov 13, 2015.

  1. purr1n

    purr1n Finding his inner redneck

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    It's been a while since I've measured the original T1 and since then my measurement rig has moved on to a version 2 using a solid coupler which yields slightly different results.

    What I've done here is measure the new Beyerdynamic T1 Generation 2 headphone on the old version 1 measurement rig for purposes of direct relative comparison. Note that the range on the FR has been squashed a little bit and the floor on the CSDs has been lowered to -36db to try to make out more of the differences. I've also included an overhead sonogram plot for the CSD with a shorter time interval.

    Beyerdynamic T1 Gen 1 Frequency Response
    T1 G1 FR.png

    Beyerdynamic T1 Gen 2 Frequency Response
    T1 G2 FR.png

    Beyerdynamic T1 Gen 1 CSD
    T1 G1 CSD.png

    Beyerdynamic T1 Gen 2 CSD
    T1 G2 CSD.png

    Beyerdynamic T1 Gen 1 CSD Sonogram 4ms
    T1 G1 CSD oh.png

    Beyerdynamic T1 Gen 2 CSD Sonogram 4ms

    T1 G2 CSD oh.png
     
    Last edited: Nov 13, 2015
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  2. mtoc

    mtoc SBAF's Resident Shit-Stirrer

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    Looks almost the same....
     
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  3. Klasse

    Klasse Friend

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    I'm pretty sure that my T1 looks different than these T1s
    Not as bright as that T1 and no raise at 6 kHz like the T1 v2

    I'll probably make some cheapskate FR measurements later.
     
  4. purr1n

    purr1n Finding his inner redneck

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  5. briskly

    briskly Friend

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    The new coupler looks less absorptive and/or leaky. Mostly the same, a hint smoother on Gen 1 coupler than the other samples. Could be any old T1 for all I know. I suppose that's the problem.
     
  6. purr1n

    purr1n Finding his inner redneck

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    Yes, the new coupler is less leaky, so slightly more bass. Still the increased bass on the Gen 2 is evident when the couplers are the same (as they are here). That's really what I wanted to confirm.
     
  7. Bill-P

    Bill-P Level 42 Mad Wizard

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    Dholy schiit!

    Is that more ringing at 8KHz on the new T1v2 that I'm seeing?

    Beyer needs to work on that IMO. Is it so hard to stuff something inside the cups? They used to do that for the old DT line, why not the Tesla line?
     
  8. purr1n

    purr1n Finding his inner redneck

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    Yup, more ringing, below 8kHz and now 6.5kHz too! (The 6.5kHz peak is why some people mentioned some similarity to HD800 treble). What makes the ringing worse is the sympathetic second order distortion peak one octave below mirroring the frequency response.
    T1 v2 peaks.png
     
  9. Bill-P

    Bill-P Level 42 Mad Wizard

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    Yeah, I think I noticed a similar peak up in some headphones whose characteristics don't sound like the FR graph suggests.

    The T1v2 seems to be one of those. A quick glance would not immediately point out how bright the treble is because people may be inclined to say... "oh, if you take the bass peak at 500Hz, then treble is in line with the rest of the range" but looking at CSD and sonogram, I think the sonic performance is basically one where bass is tubby and really overpowering (in a bad way), and treble is ringy and glarey, while midrange takes a backseat altogether.
     
  10. purr1n

    purr1n Finding his inner redneck

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    To me, the lack of midrange was more notable than annoying treble.
     
  11. Bill-P

    Bill-P Level 42 Mad Wizard

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    Oh, okay, so it really does sound like that? That's interesting...

    I've heard a good T1 out of Bottlehead Crack before, and admittedly... it's actually quite good, save for the bits of sibilance that are there in some songs.
     
  12. The Alchemist

    The Alchemist MOT: Schiit - Here to help!

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    So purrin, what do you think? Are you going to end up keeping the T1's or return them and put the funds into something else?
     
  13. purr1n

    purr1n Finding his inner redneck

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    I have it slated as replacement, but I don't know if they have them in stock. Either way I'm OK with it. I'm sure we will be able to recoup most of it back and get more interesting headphones. There isn't much interest in this and for good reason. Measurements lie sometimes, but in this case, they don't.
     
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  14. The Alchemist

    The Alchemist MOT: Schiit - Here to help!

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    thank you for the reply purrin
     
  15. Judeus

    Judeus Almost "Made"

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  16. The Alchemist

    The Alchemist MOT: Schiit - Here to help!

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    can't see your image Judeus
     
  17. PacoTaco

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    I'm more or less necroing this, but this headphone seems incredibly disappointing. I got one of the "good" revisions of the T1 (the model right before gen 2 at s/n 13xxx) and it surprisingly fantastic, especially out of the Valhalla 2. I like it as much as my modded HD650, but it seems to (oddly) do amazing with gaming.
     
  18. SSL

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    It was the most disappointing thing since my son.
     
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  19. chakku

    chakku Friend

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    I wouldn't call it odd considering the position of the driver in the cup and the added depth compared to something like a DT 880/HD650.
     
  20. PaxMan

    PaxMan Rando

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    Are these measurements raw, or compensated?
     

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