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Author Topic: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)  (Read 1380 times)

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PelPix

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Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« on: March 20, 2013, 11:06:17 PM »
I like my Brainwavz M2...well not exactly.  I like the driver.  The driver has good, even response and remarkably low distortion.  They are, however, a rather shallow IEM, and prone to odd resonance issues in my ears.  I did some SCIENCE and distilled these problems down to their essence and then wrote a little thing to correct it.  Those with M2s: how's it sound? Those with other shallow IEMs: how's it sound also?

Before:
http://snd.sc/ZxLrCO

After:
http://snd.sc/YpyZ95

Best genre to pinpoint resonance problems  :)p13
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AstralStorm

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #1 on: March 21, 2013, 10:09:51 AM »
What's the mod? Added some foam or wool behind the driver?

Never mind, I see it's a software mod. What is it, some equalization?
I used to fix these with a relatively large eq a long time ago - then they won vs GR07. I'm not convinced they would against RE-400. Alas, that pair is long gone to very rough handling.
(That being an accident involving car doors. Doors held, M2 got squashed and destroyed.)
« Last Edit: March 21, 2013, 11:10:50 AM by AstralStorm »
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For sale: Hifiman HE-500; Paradox; Brainwavz B2. PM me if you would like to buy them.

firev1

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #2 on: March 21, 2013, 06:57:16 PM »
With both the M3s and TF10s, things seem to get more mid recessed and for both, I did not hear it to be beneficial.
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AstralStorm

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #3 on: March 25, 2013, 05:31:20 PM »
Yes, it's interesting, anything hiding mids would break M2 a lot. What those need is mostly a bass cut and some lesser treble boost - their FR is "smooth deepening rolloff" shaped.
Also a bit of bass control, but can't fix that in software. I recall these didn't have any actual resonance bar the generally long decay and minor 4.5k shell ringing. (not a peak)

This sounds like a correction for a lack of seal, V-shaped. Get a seal instead.
« Last Edit: March 25, 2013, 05:38:49 PM by AstralStorm »
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For sale: Hifiman HE-500; Paradox; Brainwavz B2. PM me if you would like to buy them.

PelPix

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #4 on: March 25, 2013, 06:48:42 PM »
Quote from: AstralStorm on March 25, 2013, 05:31:20 PM
Yes, it's interesting, anything hiding mids would break M2 a lot. What those need is mostly a bass cut and some lesser treble boost - their FR is "smooth deepening rolloff" shaped.
Also a bit of bass control, but can't fix that in software. I recall these didn't have any actual resonance bar the generally long decay and minor 4.5k shell ringing. (not a peak)

This sounds like a correction for a lack of seal, V-shaped. Get a seal instead.


They're sealed so tight that when I pull them out, the silicone flips inside-out and there's a huge thunk and I can feel my eardrum bulging outwards, so a seal definitely isn't the problem.  I don't know what's up, but I definitely hear a peak at 7k that's easily 20dB, if not more.  It's so loud I can't hear ANYTHING ELSE AT ALL, and that's what I attempted to fix.

Perhaps they'll sealed too well?  Perhaps my small ear canal is not partial to them?
« Last Edit: March 25, 2013, 06:58:20 PM by PelPix »
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AstralStorm

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #5 on: April 03, 2013, 04:03:35 PM »
Insertion depth perhaps? They definitely did not have a huge 7k peak, but such peaks tend to move around depending on depth. I had a relatively deep fit for a shallow fit IEM with those and I used medium-small single flange tips back then.
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For sale: Hifiman HE-500; Paradox; Brainwavz B2. PM me if you would like to buy them.

PelPix

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Re: Brainwavz M2 (software) resonance fix WIP (Might work for other shallow IEMs?)
« Reply #6 on: April 11, 2013, 11:01:19 PM »
Quote from: AstralStorm on April 03, 2013, 04:03:35 PM
Insertion depth perhaps? They definitely did not have a huge 7k peak, but such peaks tend to move around depending on depth. I had a relatively deep fit for a shallow fit IEM with those and I used medium-small single flange tips back then.
They're in all the way to the back of my outer ear canal.
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