Friday, March 1, 2013

The effect of ear sleeves: Monoprice 9927

The frequency response of Monoprice 9927 is quite linear, but some might find the quarterwave resonance at 5 kHz little too exaggerated, whether it is subjectable to the listener or not. If such peak can effectively be subdued, Monoprice 9927 shall indeed become one of the flattest IEMs in the market.




Monoprice 9927 equipped with various ear sleeves:
  
Silicone sleeves






Foam sleeves


MEElec large triflanges turn out to be the answer, and any remaining harshness shall be damped with additional acoustic impedance, as suggested previously. An article on the internal modification of 9927 will be presented separately.





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11 comments:

  1. AnonymousMarch 1, 2013 at 7:19 AM

    Very cool post, thank you. But what do you suggest for people with smaller ear canals that can't fit the large tips?

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    Replies
    1. Rin ChoiMarch 1, 2013 at 7:50 AM

      You're welcome. Well if that's the case, then the internal modification is the only option for them it seems.

      Delete
  2. hobbyoneMarch 6, 2013 at 7:07 AM

    Hi udauda! I use this earphone with Monster Supertips Foam inner tube + normal silicone combo. I'm interested in your opinion about them.

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    Replies
    1. Rin ChoiMarch 6, 2013 at 7:38 AM

      I think the sound should be close to that of UE biflanges..?

      Delete
    2. hobbyoneMarch 6, 2013 at 8:30 AM

      I don't have any bi-flanges, so I can't answer you. I tried also many tips: Monster gels, silicone tip filled with Shure foam, Shure foam on Comply tube, but the best sound was with the above mentioned combination. No harshness and great bass quality wise. You does not want to sacrifice a Monster foam? :-)
      I also made a video, about these tips: http://www.youtube.com/watch?v=qro4ntN5zS0

      Delete
    3. Rin ChoiMarch 6, 2013 at 8:46 AM

      you're very enthusiastic! I will indeed measure that configuration for you in a day or two. :)

      Delete
    4. hobbyoneMarch 6, 2013 at 9:54 AM

      Oh, that would be great.

      Delete
    5. Rin ChoiMarch 19, 2013 at 6:51 AM

      Sorry for taking so long, had some things to do. Here you go: http://i.imgur.com/Em3G5rz.png

      As the core element is same as the Monster, the sound should be more or less the same. However, you might be able to obtain a better fit!

      Delete
    6. hobbyoneMarch 20, 2013 at 1:09 AM

      Thanks for trying this. I think you used the biggest sizes core. I use the one of the smallest, but no problem.

      Delete
  3. KamakaMarch 10, 2013 at 6:22 PM

    Hello, above you mentioned internal modifications. I was under the impression you were making a post about how to do them. Are you still planning on making such a post?

    ReplyDelete