HD650 KISS mod

Discussion in 'Modifications and Tweaks' started by purr1n, Dec 6, 2016.

  1. AstralStorm

    AstralStorm Friend

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    I've applied a KISS-alike mod except instead of Creatology+Dynamat Extreme combo I used thick layer of BASF Comply foam. (In form of Comply wraps.) The chunks on the sides were left as is mostly, with a slightly increased thickness of the hard foam layers.

    Interestingly enough, the use of this kind of silicone foam is much more effective on the magnet and nearby surrounds than creatology + dynamat extreme. It's slightly smoother sound yet as a result of additional highs peaks absorption. Not a huge difference but I'd take anything. I did not cover the magnet hole with foam, only the whole magnet and unvented plastics on its sides.
    The extra thick creatology-like foam layer improves bass handling a bit still too.

    Main problem is that this foam is expensive if bought as Comply Wraps. I think it is BASF BISCO BF-1000 foam, can someone find a reasonable retail source for this?
     
    Last edited: Oct 21, 2018
  2. ookic

    ookic Rando

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    I've got a pair of V1 black driver HD650, and I'm curious to try out this KISS mod! Should it result in the same effect on my headphones as it does with the white drivers'?


    Sorry I haven't gotten an answer for you! But, would you be able to share some pics? You said you used a thick layer - - Did you stack the Wraps on top of each other?
     
  3. likearake

    likearake Acquaintance

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    Bit of an old post so apologies...

    Does this mean that for earlier HD650s you did the KISS mod but without attaching the folded foam disc at the back, as well as performing the coin mod at the front? Or are you referring to something different?
     
  4. iFi audio

    iFi audio MOT iFi Audio

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    Not something to be used then, eh?
     
  5. purr1n

    purr1n Finding his inner redneck

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    I did the M mod for prior iterations of the HD650 which seemed to have a more damped and boring character.

    M mod does mean complete removal of foam in the back and coin mod.
     
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  6. AstralStorm

    AstralStorm Friend

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    Well, it's not that super expensive, and there are equivalent foams - compared to the silly sorbothane feet for instance where there is no equivalent and a cheaper material will be inferior. You can use any soft sound and vibration dampening high density open cell foam for this pupose. I just had way too many wraps on hand.
     
  7. elmoe

    elmoe Friend

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    Just did this mod on my HD6XX and I have a ton of Dynamat/Creatology leftover (already stuck to each other, uncut). If anyone needs some I'm happy to ship your way for the cost of shipping.
     
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  8. lcmusiclover

    lcmusiclover Almost "Made"

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    PM sent
     
  9. elmoe

    elmoe Friend

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    I'm just realizing that I can probably fit enough of this to mod a pair in 1 envelope, and I'm not going to charge people for the price of a stamp.

    If you live in the US, I'm happy to throw some in an envelope and ship your way for free. Just PM me your address.

    edit: lcmusiclover I have some in an envelope for you and will ship it out today/tomorrow
     
  10. elmoe

    elmoe Friend

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    I have enough left to mod ~4 pairs, first come first serve!

    Edit: 3 pairs left
     
    Last edited: Jul 14, 2019
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  11. tommytakis

    tommytakis Friend

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    I just received my KISS- modded HD650 from @Gaspasser

    This is an early first impression but holyyy shiettt this sounds amazing... this mod basically removes all the nitpicks I had from from both HD650 and HD600 and brings the best of both worlds. Idk why I was always hesitant to mod my hd650...

    - no shouty vocals like on the HD600, which is why I always preferred the HD650 over the 600
    - less mid bass bloat, muddiness than the stock HD650 and slightly more extension
    - more treble presence and removes that Sennheiser veil, similar to stock HD600. The modded version loses a bit of smoothness from the original, but I think I'm totally happy with the trade off


    Now I'm curious to try the SBAF modded HD800 w/ SDR... I can't wait to compare the KISS HD650 w/ the Verite on the DSHA3f. HD650K is the underdog raised from the slums that I want to root for costing a fraction of the price of Verite
     
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  12. elmoe

    elmoe Friend

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    Agreed, very little downfall if any from doing the KISS mod. Now that I've been listening to it for about a month, I highly recommend it.

    It took my already excellent 6XX and really helped with the bass bloat, added more overall bass, and cleared up that infamous Sennheiser "veil" almost completely.
     
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  13. tommytakis

    tommytakis Friend

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    yep... it instantly made me doubt my kilo buck headphone purchases, realizing this hidden gem for the fraction of the cost
     
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  14. elmoe

    elmoe Friend

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    I haven't bought a pair of headphones since. Not sure I want to spend thousands on sidegrades.
     
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