The HD800 & HD800S thread

Discussion in 'Headphones' started by sorrodje, Oct 11, 2015.

  1. E_Schaaf

    E_Schaaf MOT: Upscale Audio; recovering HFM addict

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    Hey, HD800 modding is far out of my expertise too! I'm just speedballing here and have the data from the measurements and what my ears tell me. Plus the efforts of others in this thread and @Bill-P 's threads. Here's another photo looking at the rear side of the cup -

    upload_2021-2-25_17-24-34.png

    It's a little more open than it probably seemed from that first image. The deepest part of the HD800 cup is about 25mm, the foam is only 12mm so it's not 'full' of foam if that helps to imagine how much foam it is.

    The speaker stuffing analogy is a bit different - the back of an enclosed speaker plays by a different rulebook than the earside of a headphone. @tommytakis and I are starting to deep dive into sunken baffle headphone design and HD800 mods. Definitely learning as we go but hoping we can pull out some great performance and definitely will share every step of the way. I'm all about rapid iterations, wacky ideas, incremental change, slowly narrowing into things, following the path of least resistance.
     
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    Last edited: Feb 25, 2021
  2. wadec22

    wadec22 Facebook Friend

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    Very cool. You're right, that image tells the story a bit better.

    I imagine the rules are different. With bass frequencies being omnidirectional I thought it may have an effect.

    Excited to see what you guys cook up.
     
  3. fraggler

    fraggler A Happy & Busy Life

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    If you do end up sending out foam, I'd be interested, but only after those with measurement rigs and better ears volunteer. I won't remove the SDR mod I have, but the SBAF approved rug liner is easy to swap in and out to compare.
     
  4. RenEH

    RenEH Rando

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    I’m a little confused about the excitement of solderdude’s involvement with the hd8xx. On ASR he’s pretty adamant about all amps that measure the same sound the same. My subjective experience between the 789 and other amps seems to indicate this isn’t the case.
     
  5. oldschool

    oldschool Acquaintance

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    J. Valour has put a video out. Says HD800s and HD8xx are not that different. Called the latter more muffled and a little bit worse than 800s overall.

    Can't really comment on this guy as it's the first time I see a video from him. Comes across as more of a social media person than a reliable reviewer.
     
  6. bboris77

    bboris77 Friend

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    Still though, for a social media person NOT to hype the latest and greatest thing on the block is a bit of a shocker. I have watched a few of his videos and he seems ok. Not brainwashed by the measurebators for sure.
     
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  7. Baten

    Baten Friend

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    I like solderdude but pretty sure he's firm in the objective camp. Can only say "to each their own" to that, doesn't make some of his modding stuff any less good, not to mention his involvement with garage1217. He's also not the kind of guy to force his preferences or views on anyone from what I see. I bought one of his passive attenuators and that also was a good experience. Anyway, getting off-topic I guess. But I see no harm.
     
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  8. Pelswik

    Pelswik Rando

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    Greetings! I have been reading this forum for a while and finally decided to step in.

    Thanks to all your opinions and such, I decided to get a HD800 + Modius/jotunheium 2, no SDR, just EQ.

    Concerning to earpads, I tried both original and Dekoni Velour, and I encourage you to do the same too. I think that the extra thickness helps a lot the loose grip of these, and also creates a more "isolated" sensation, as it is slightly tightest.

    I got another Dekoni Velour on it's way, plus Hybrid velour/leather for summer season, as velour might be too warm, I will let you know with my following impression
     
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  9. gixxerwimp

    gixxerwimp Professional tricycle rider

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    Someone mentioned buying spare HD6xx pads just in case Senn stops making them, so I decided to get a backup set of HD800 pads. I got the official replacement pads, and they seem pretty much identical to the ones that came with my phones. But after mounting them just to check, I noticed that the location of the "clips" is a bit different.

    Below* is the pad that came with the phones. Above* is the newer replacement pad. Has anyone else seen this?

    HD800 pads.jpg

    *I realized after this could be confusing. The original pads (bottom of the image) are sitting on top of the new pads (top of the image).
     
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    Last edited: Apr 16, 2021
  10. fraggler

    fraggler A Happy & Busy Life

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    I don't remember what the ones I put on my HD800s last year looked like, but I thought I was going to break my headphones trying to get them to snap in. Have you tried mounting your new ones? If they go on readily, consider yourself blessed (assuming nothing else has changed).
     
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  11. gixxerwimp

    gixxerwimp Professional tricycle rider

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    I only discovered the difference after mounting them, taking them off, and noticing the marks in the plastic film left by the clips. When brand new, the film is flat and unmarked. You could probably feel for the clips to see where they are exactly, without mounting them first.

    And yeah, they're a fuckin PITA to get on. Just have to line them up precisely and press FIRMLY.

    While I had the old ones off, I washed them with Savon de Marseilles like I did my Clear pads. I think these pads will probably last a lifetime. There isn't that much pressure placed on them, and not that much foam to compress over time.
     
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  12. GrahamB3

    GrahamB3 Rando

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    I recently acquired gently used HD800's. I installed these pads (https://www.amazon.com/gp/product/B08P8XNWYH/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) on receipt. The phones sound great to me, but I've never heard the stock pad sound. The contour and mass of the pads are very similar to stock. They installed easily with no issues.

    I've tried to order new OEM padding (https://spares.sennheiser.com/en-us/catalog/sparepart/534406). An item that's continually on back order. Nothing wrong with my original, but I'd like a second to modify.
     
  13. gixxerwimp

    gixxerwimp Professional tricycle rider

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  14. 7seven

    7seven Rando

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    Is the HD800 stock clamp almost non existent for you guys?
    I have had the HD800 for like 2 years and only discovered now that the clamp is too light for the headphones perform correctly. If I press the cups into my ears (without blocking the rear opening obviously) to simulate a tighter clamp the sound improves and changes dramatically.
    It was pretty tough to bend the headband in for a better clamp and it could still be tighter (or it could be tighter than I think, the HD800 is so damn comfortable).
    So I was just wondering is this a common thing (my head isnt just super narrow), and if the significant effects of clamp are known about
     
  15. gefski

    gefski Facebook Friend

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    The clamp on my 800S is inadequate for any “over-enthusiastic” head bobbing. However, I get no sonic change by applying additional pressure over each ear. The cups seem to lay against my head, sealing all the way around each ear, filling any dips or rises. Normal head movements don’t shift them at all. For me, these quite shallow pads and moderate clamp combined with the angled way out drivers do just what they’re supposed to. And my head/ear distance is relatively small judging by the settings I use for many headphones.
     
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  16. Walderstorn

    Walderstorn Friend

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    Its not uncommon for people, with smaller heads, to try to bend them in a bit. I too suffered this situation because of my head size being on the smaller side.
     
  17. 7seven

    7seven Rando

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    That is my problem I think, it is not sealing well at certain spots, like the top of my jaw. Definitely the thinnest and least spongiest pads Ive had on a HP.

    Mine is really a low serial number too, I think I read the later ones had thicker pads?
     
  18. wormcycle

    wormcycle Friend

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    Mine seal perfectly if put them on in such a way that the headband touches top of my head. Even with glasses which I bend slightly to seat flat on my temples. If you are uncomfortable with that y I understand you may have problems with seal
     
  19. wormcycle

    wormcycle Friend

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    I am still waiting for the foam similar to what you used in the meantime, for practice I experimented with the stuff I had. It is for the age 3+ very appropriate for my modding skills. It is 7 mm thick and I thing higher density.

    I did not want to give up on dust protection and used something that is basically a fabric but more like very durable toilet paper. I cut it into the standard rug liner mode pattern and just fixed the foam ring on it with two sided tape, and used the same tape to attach it to the ring around the driver.
    And it is not a perfect ring, I hacked it using my wife nail cutters.
    [​IMG]
    I like what it did to the sound, I do not need higher mids and treble EQ anymore, bass is better controlled but it did something to the precision of instrument placement. I think it may be the dust cover, which is very thin, flapping. Next pass will be keeping the dust cover only on the driver. To bad I cannot measure it. The only way I can tell is to use it for a day or two and then go back to Senn dust covers.
    [​IMG]
     
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  20. E_Schaaf

    E_Schaaf MOT: Upscale Audio; recovering HFM addict

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    What kind of perforated material is that? I had some stuff that looked like that but there was a middle plastic lining so the holes effectively did nothing and it walled the sound completely, killed all the dynamics. With foam that dense you're probably inducing more reflection than absorption (?) compared to the lighter foam. But hey, if it sounds right, it is right. :)

    I'll be curious to hear your thoughts on the other foam with no driver-covering filter. I found with the foam piece I didn't need any driver coverage. Most of the treble nasties come from shell resonance and not from the driver itself AFAIK messing with the drivers in other shells.
     
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