CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS

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Author Topic: Preliminary Headphone Measurements - WIP, Your Thoughts?  (Read 864 times)

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spoony

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Re: Preliminary Headphone Measurements - WIP, Your Thoughts?
« Reply #40 on: June 07, 2014, 04:43:59 PM »

Yeah, the treble response being so dependent on position and earpads is a real caveat, I can notice the peaks shifting in frequency as I shuffle the headphones around my ears. I was hoping that averaging many tries would diminish this effect somewhat. What about pad-less measurements then?, they would fail to show the effects of over-damping, I reckon, but maybe the treble response would in turn become more consistent.
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Solderdude

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Re: Preliminary Headphone Measurements - WIP, Your Thoughts?
« Reply #41 on: June 07, 2014, 07:45:44 PM »

Pads are just as important as the driver is and can make or break the sound.
They provide seal needed for the bass and also absorb mids/highs or reflect them.

I see no way to exclude pads and still get meaningful measurements.

A 'free air' measurement without pads will (most likely) not be telling something about the drivers properties.
Don't have any experience with this method though and is just my opinion.
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firev1

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Re: Preliminary Headphone Measurements - WIP, Your Thoughts?
« Reply #42 on: August 25, 2014, 06:05:52 AM »

So its my turn for a WIP too, need foam for mounting and to cut some woodboard to mount the artificial ear, very limited capability but hopefully I will be able to get some reliable results sometime with my approach. WM-61a mics in a silicone acupunture ear model(it provides some ear gain)with the mic mounted in heatshrink rubber to simulate a 2.5cm ear canal. Also did a single side measurement of the X10 with the mic approximately 13mm from the end of the rubber tip. Compensations will come in later when I'm able to mount my HD800s on the rig. Plan to get another mic and level meter as well for reference to cal the rig. Note: Source of mics are a ebay seller from japan so yeah, might be counterfeits. Mine are etched 61031 on the sides if it means anything.

Graph of the stock Yamaha HP-1 raw response.



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Re: Preliminary Headphone Measurements - WIP, Your Thoughts?
« Reply #43 on: August 25, 2014, 07:11:08 PM »

Cool, keep us posted! Good idea on reusing the thread. These early results remind me of something you'd see from Tyll or Golden Ears, with the large 1-5KHz peak that is compensated for. I'm curious how that would look if you moved the mic closer and didn't try to simulate an ear canal.

Unless that headphone actually sounds like that?
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