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Author Topic: Hack-a-CIEM: Pirate's story  (Read 13802 times)

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AstralStorm

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Re: Hack-a-CIEM: Pirate's story
« Reply #50 on: October 28, 2013, 10:53:43 PM »

Trivial. GR07's membrane is ever so slightly thicker and much lower tension. Sony likely has a very tense membrane, that's why they have way more high frequency modes and why they had to add foam/rubber ring mounts or it'd break on a cough. (also for dampening, which it doesn't have enough of either)
Of course I'm only inferring that from the published driver construction diagram.

GR07 has very few breakup modes up high - the 6.5k/14k peaks plus plasticky ringy reverb come both from the shell, not fully dampened half-wave resonance, relatively easy to fix.

Have a nicer pic with more light, not much better though.
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For sale: Hifiman HE-500; Paradox; Brainwavz B2. PM me if you would like to buy them.

kiteki

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Re: Hack-a-CIEM: Pirate's story
« Reply #51 on: October 29, 2013, 11:00:16 AM »

That's a much better pic, cool!!

I asked Thousand Sound once when I was feeling adventurous if he'd use my GR07 in their TS842 or their newer TS853 and he said no, no and no, plus no.

http://englishbutler.jugem.jp/?eid=34

Anyway looking forward to your results.
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MuZo2

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Re: Hack-a-CIEM: Pirate's story
« Reply #52 on: October 29, 2013, 01:24:12 PM »

Speaking of hybrid, here some work I have been doing in past few days.
https://twitter.com/MeiZu2/status/394855108061589504/photo/1
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AstralStorm

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Re: Hack-a-CIEM: Pirate's story
« Reply #53 on: October 29, 2013, 08:19:50 PM »

I'm not seeing any space for the BA in this hybrid. Are you planning a mostly empty shell for a dynamic driver, or some specific kind of dampening?
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MuZo2

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Re: Hack-a-CIEM: Pirate's story
« Reply #54 on: October 30, 2013, 01:43:25 PM »

If you see closely you can see that TWFK sits in the nozzle. The TWFK is from q-jays.
The DD will be 13mm its really fast and matches the TWFK BA. You can see the DD will be fixed in round shell. Will post real pics on weekend. The shell is ready.
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MuZo2

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Re: Hack-a-CIEM: Pirate's story
« Reply #55 on: October 30, 2013, 02:47:02 PM »

Are you planning a mostly empty shell for a dynamic driver, or some specific kind of dampening?
Do you think dampening like in headphones on backside will work? I was planning to use the empty space in shell just for crossover. I think ASG & 1plus2 uses some dampening.
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AstralStorm

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Re: Hack-a-CIEM: Pirate's story
« Reply #56 on: October 30, 2013, 07:04:56 PM »

Sure it does. I've tried such a mod for even stock headphones, can change the sound a lot, by removing horn effect of the shell and/or half-wave resonance.

With RE-400, made them mostly electrically flat - FR similar to Paradox. With GR07, small amount of cotton wool in the back drops plasticness of the sound and tames 6k peak.
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AstralStorm

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Re: Hack-a-CIEM: Pirate's story
« Reply #58 on: November 01, 2013, 12:43:04 PM »

Decent. I was always looking for a way to not have the 12dB/octave treble drop, like the WBFK you used (most likely) has.
Nice balance lower down too.

Now I've found Surface from Motion software and will try to use 3D modelling as a solution to a few issues, such as creating a silicone shell (not full mould) and lock mounts for the silicone tubing or maybe printed ABS tubing.
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MuZo2

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Re: Hack-a-CIEM: Pirate's story
« Reply #59 on: November 02, 2013, 05:09:11 PM »

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