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Author Topic: HD800 Variability Measurements Starting with Jason's HD800  (Read 15568 times)

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Marvey

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #10 on: September 03, 2012, 03:39:30 AM »
They are not that much different. They all sound like HD800s. Just normal variability with production. Amazing that Senn matches the drivers so well. In contrast, my super LCD3 (which lasted less than 24 hours) and my veiled LCD3 were completely different headphones.

My HD800 (not shown) is actually similar to Anax's, but they are within 500 s/n.

Interesting to note that the HeadRoom unit was s/n 500 and Jason's was a very recent production. I highly doubt Sennheiser has changed the formula for the HD800.

Note the curves for Max's HD800 decay are the smoothest.
« Last Edit: September 03, 2012, 03:44:38 AM by purrin »
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schiit

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #11 on: September 03, 2012, 07:44:57 PM »
Interesting! Seems the extra 7.5k/8kish resonance might be the culprit here. Feel free to pull the foam out if you want to see how that affects things.

Also, those headphones are a bit green. We bought them after our long-term loaner went back to their owner, so they probably only have 60-80 hours on them. I thought these sounded brighter, but I put it down to mods/no mods/ears playing tricks on me.
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Marvey

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #12 on: September 03, 2012, 07:50:59 PM »
I'll take the mods out and re-measure. Then burn them in with white noise at 80db with a 1 minute cool-off every five minutes for the next day or two.
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Anaxilus.

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #13 on: September 04, 2012, 07:09:05 AM »
Quote from: olor1n on September 03, 2012, 03:33:51 AM
Quote from: purrin on September 03, 2012, 03:29:44 AM
Max's HD800 does sound the best - the smoothest.

Why? What's missing from the others? Is Max's HD800 an anomaly amongst the various HD800 samples you've heard?


Max's has a 1-1.5dB rise along 1Khz to 4khz.  In other words, his mids are less recessed.
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Questhate

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #14 on: September 04, 2012, 05:44:16 PM »
Man, this thread makes me curious to hear the Mjolnir with another set of HD800s now.
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Marvey

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #15 on: September 05, 2012, 07:38:09 PM »
Took out the Anax mods*. This mod was from the Tyll cutout pattern with the skinnier rings. Only one layer of 2mm foam was used. Note that the official Anax mod uses thicker rings which extends the size of the "baffle" somewhat.

Interesting. So WTF...


« Last Edit: September 05, 2012, 07:44:04 PM by purrin »
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Questhate

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #16 on: September 05, 2012, 07:41:58 PM »
Interesting. Does it sound better without the mods?
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Marvey

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #17 on: September 05, 2012, 07:44:34 PM »
It does look like the resonance got shifted to 10kHz. I can't say for sure it sounds better this way. I do think it sounds better... Was playing the same tracks before I tore out the mods.


I need to work in the official Anax mods on this pair.
« Last Edit: September 05, 2012, 08:26:23 PM by purrin »
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Marvey

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #18 on: September 14, 2012, 09:55:17 PM »
FYI - we eventually turned Jason's HD800 into this:  http://www.changstar.com/index.php/topic,497.msg9368.html#msg9368
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extrabigmehdi

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Re: HD800 Variability Measurements Starting with Jason's HD800
« Reply #19 on: October 01, 2012, 12:27:53 AM »
I don't understand why the measurements from goldenears website, look
much worse. There must be a problem with their setup ?

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