Sennheiser HD650 Love (Appreciation Thread)

Discussion in 'Headphone Measurements' started by purr1n, Sep 27, 2015.

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  1. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    I just did the left side, now I gotta do the right and can have both up (580&650) for loaners.
    Edit:
    Ok mod complete.
    **Edit mod was updated with new material to boost extremes.
    So this was old pic shown.
    IMG_20200110_141341.jpg

    Woops, apologies, I updated my CSD to go more to the left, down to 200hz, so parameters more even with the other.
     
    Last edited: Jan 28, 2020
  2. Hands

    Hands Overzealous Auto Flusher - Measurbator

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    Your software, settings, and rig are not at all comparable to mine for measurements.
     
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  3. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    Absolutely correct so I am willing to habit test it out.

    I'm going to change my loaner, because my testing revealed yesterday that the 580
    (Aka600) has limitations, but the 650 actually has greater potential and I was able to observe increased resolve in my listening(!) and so it makes all the other versions moot.

    I have good bass slam, which would otherwise have needed a powerful tube amp, and the trebles have greater nuance than the 580(600) in my music cymbals, but they still need more boosting so I will be tuning it and post/update it in the loaner thread .
     
  4. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    Update I finished tunning my 650 and am stoked at how well it came out and will post in loaner thread details next.
    :)
     
  5. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    For those that are curious, I updated my Loaner thread and added the "before-and-after" measurements.
    Cheers.
     
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  6. ChaChaRealSmooth

    ChaChaRealSmooth SBAF Gearmaster

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    I have had the opportunity to listen to @m17xr2b's mod to the HD650, and I have to admit that I'm not the biggest fan. I'm really curious to see if there are measurements that can confirm what I hear, but I believe that most of my annoyances come from the FR.

    While the "HD690" sounds less sleepy and laid-back, it comes at the price of sounding very hot in the upper mids. I hear a stridency to the tone that makes me wince in some vocals and in some metallic percussion hits. The bass bloat and the bass bleed into the mids has been reduced, but in relation to what I described before, I hear this as quite lean. This prevents me from listening at my normal levels.

    That being stated, I do hear some technical improvements. The greyish background is not as present compared to stock, and the headphone has more attack in the notes. It does bring details more forward than stock, but I don't necessarily hear it as more detailed; more like "moar" detailed.

    Overall, I just didn't find it enjoyable for me and I'd rather listen to the stock HD650. I'd be curious about the opinion of someone who prefers the stock HD600 though.
     
    Last edited: Jan 21, 2020
  7. RobS

    RobS treboR (Psalmanazar Groupie)

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    Have you heard the KISS modded HD650, ChaCha? Opinions on that?
     
  8. ChaChaRealSmooth

    ChaChaRealSmooth SBAF Gearmaster

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    I actually have not. I'd mod my own HD6XX, but I'm, uh....kind of a lazy bastard. I have heard the JAR stuff though, and thoroughly enjoyed both the JAR 600 and 650.
     
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  9. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    I have also noted this same problem when you tone down the bass.
    A small upper treble hump appears, and that area becomes strident.

    At first it is impressive, because in comparison to stock, it sounds more alive and free of the muddy bass.
    But it wasn't optimal for me, so further tunnig was required.

    I found that it was best to keep those upper mids more even & closer in line with the trebles, while also keeping the lower spectrum elevated over both, for bass.
    So I can imagine that may be Somewhat near the possible tonality differences between mine and that 690mod.
    Edit*
    I just have to update that thread with new frequency response pic.
     
    Last edited: Jan 26, 2020
  10. brencho

    brencho Friend

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    I dunno man, I didn’t hear any of that stridency that Chacha mentions in m1x1757dja’s mods. Don’t you have focal and a matrix dac? Those can get strident, maybe it’s the dac you’re hearing? The UK modded 650 def sound less congested, more open, less mid bass phatness. But strident... they’re still 650s, with more open air and less mid bass, maybe a bit brighter as a result but for a warm headphone I don’t see it as a problem. If someone likes the warm comfort of the stock 650 then that’s cool, keep listening to it. I’m in the camp that even the quarter mod doesn’t make the 650 strident so ymmv.
     
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  11. ChaChaRealSmooth

    ChaChaRealSmooth SBAF Gearmaster

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    I don't hear the same stridency with any other headphone I own. For some reason it's the most egregious on this particular modded HD650.
     
  12. Maxx134

    Maxx134 no one will touch his boy parts without $$$

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    I was able to smooth/extend out the peak area in low trebles that treble mods like "coin-mod" elevates.
    I was also able to elevate treble "air" range (over 7khz) a bit.

    Also reduced low mids thickness and bass bleed, while at same time boosting low end bass, which untill now impossible to do while elevating treble range at same time...
    I posted in my loaner thread a before and after pics.
    Stock:
    HD650 stock FR blk bffl.jpg
    Nxt Gen Mod:
    HD650 Next Gen Jan27 FR.jpg
    :)
     
    Last edited: Jan 28, 2020
  13. E_Schaaf

    E_Schaaf MOT: Upscale Audio (Thread Judge Code-6 District)

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    I'm not sure why anyone would want more bass compared to stock HD650, especially if extension is not dramatically improved. And the whole appeal of the 650 is the fairly linear midrange and treble response - which is now a bit scooped.

    If I wanted a fairly V-shaped response with primary emphasis on midbass and upper mids, I'd buy a cheap IEM and call it quits. I guess this could be a take on a 'fun'-style tuning, assuming dynamics are improved. But also looks like it would be more picky about musical content and less of a jack-of-all-trades VS stock tuning.

    Not saying your work doesn't have value, but I am skeptical and eager to hear further impressions from more members.
     
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  14. Justin S

    Justin S Rando

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    I didn't really get the excitement about the 650s until recently. I'm a speakers/monitors guy and love sound-in-the-room with the staging and imaging that comes with it. I recently made a shift from nighttime monitors to headphones which has been an adjustment.

    I feel like I finally understand the HD650s (6xxs). I picked up a pair over a year ago and could not stand them initially (I did a 100hr burn-in before making this assessment). I strongly preferred my HD600s and my pair of custom Grado-style builds (Elleven Acoustica R1).

    I worked my way through a few other pairs of headphones that came and went but kept the 650s around, thinking I should try to figure them out. You all make them sound like the Super Best Value Ever.

    I performed the SBAF kiss mod on them, and they were undoubtedly more clear, but still kind of flat and compressed sounding.

    After picking up a ZDT Jr, I got a glimmer of what these headphones could do, though the staging and bass still left something to be desired.

    With some recent horse-trading, I managed to secure an upgraded Mapletree Audio Design Ear+ HD and, well, wow. The 650s light up with this amp. The staging is deep and occasionally wide, the imaging is 3D and precise, the midrange is spooky, the bass is tight and slam-y, and the treble is detailed and smooth.

    I know it has been said, but the 650s scale to a shocking degree. For me, they went from being woolly or compressed or meh sounding with my other amps to being my favourite. I auditioned a pair of HD800S headphones last week, and left feeling happy with my current setup and wallet right where they are for now.

    TIDAL/Redbook>ROON (W10)>sometimes HQplayer upres to DSD>USB>RME ADI2 DAC FS>DIY Kimber SE Cables>Mapletree Audio Design Ear+ HD (moded) W various NOS tubes>DIY SPC headphone cable>HD6xx SBAF Kiss Mod.

    [​IMG]
     
    Last edited: Feb 8, 2020

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