Dan Clark Stealth Review (State of the Art Headphone)

[MRC01]

We are talking about the driver.
You are talking about your room.

With headphones, we should also be talking about resonances/ringing in the cup. One of the members here measures headphones and provides on his web site CSD waterfall plots with a 5ms window. Here, FR and CSD are closer in most of the plots, as expected with a shorter time window, but still don't always move together in lock step as you imply. Some do, some do not. For example, the Dan Clark Aeon Closed:

ÆON Closed

back to MrSpeakers back to measurements home Published: Nov-2-2017 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and …

diyaudioheaven.wordpress.com

Here's a better example: the Pioneer SE-300 has a big CSD ringing spike at 6k but FR through that region is flat.

SE-300

back to Pioneer back to measurements home published: Aug-25-2018 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘w…

diyaudioheaven.wordpress.com

 

[DualTriode]

Since EQ cannot add damping, you're mostly stuck with this attribute, similar to a loudspeaker's radiation pattern.

This is in error, I am not sure if it is intentional misinformation or just excited arm waving.

For the very headphone this thread named for, engineered meta material is included to provide frequency specific damping to equalize the headphone Frequency Response.

Thanks DT

 

[staticV3]

This is in error, I am not sure if it is intentional misinformation or just excited arm waving.

For the very headphone this thread named for, engineered meta material is included to provide frequency specific damping to equalize the headphone Frequency Response.

Thanks DT

That's gotta be an interesting headspace that you're in to twist and misinterpret my words like that.
Ridiculous.

 

[MRC01]

For the very headphone this thread named for, engineered meta material is included to provide frequency specific damping to equalize the headphone Frequency Response.

Yep, Dan Clark's meta-material does for the earcup what tube traps, bass traps, resonators, etc. do to a listening room. And you can see the effect in the measurements, one of the cleanest group delay curves we've seen in Amir's measurements with none of the hashy reflections seen even in some well engineered headphones. This is also seen in other Dan Clark headphones using meta-material.

Dan Clark's meta-material is like correcting a room with room treatments instead of with EQ. It kills reflections at the source instead of putting a Band-Aid over them.

 

[DualTriode]

With headphones, we should also be talking about resonances/ringing in the cup. One of the members here measures headphones and provides on his web site CSD waterfall plots with a 5ms window. Here, FR and CSD are closer in most of the plots, as expected with a shorter time window, but still don't always move together in lock step as you imply. Some do, some do not. For example, the Dan Clark

I hope that you can formulate a coherent message.

If you continue to focus on long Reverberation Times and looking deep into the noise floor you will continue to to find reflections and cognitively tangent ideas. The colorful room measurement plots do not help, they are only a distracting shinny object. You cannot hear the shine.

If you gate your measurements and not set the floor of your measurements down so far you will find that there is a very direct relationship between measured FR and what your hear.

If you continue trying to correct RT60 with EQ you will be an unhappy camper.

You were speaking about the Member that measures headphones on his site. He means well and I leave him alone. He uses a Flat Plane measurement jig (no rubber fake ears) with $0.69 egret measurement microphones. Any measurements are very unlikely to repeat if you happen to put the same headphones on your real head with real ears.

see all next year.

 

[isostasy]

With headphones, we should also be talking about resonances/ringing in the cup. One of the members here measures headphones and provides on his web site CSD waterfall plots with a 5ms window. Here, FR and CSD are closer in most of the plots, as expected with a shorter time window, but still don't always move together in lock step as you imply. Some do, some do not. For example, the Dan Clark Aeon Closed:

ÆON Closed

back to MrSpeakers back to measurements home Published: Nov-2-2017 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and …

diyaudioheaven.wordpress.com

Here's a better example: the Pioneer SE-300 has a big CSD ringing spike at 6k but FR through that region is flat.

SE-300

back to Pioneer back to measurements home published: Aug-25-2018 NO SMOOTHING is applied to the shown plots. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘w…

diyaudioheaven.wordpress.com

If I understand how to read these graphs correctly, it looks like what you're referring to is happening at -30dB and below the initial measured response so likely isn't impacting on the audible signal much (if at all)?

Also wondering what is relevant in a 5ms window?

 

[MRC01]

If I understand how to read these graphs correctly, it looks like what you're referring to is happening at -30dB and below the initial measured response so likely isn't impacting on the audible signal much (if at all)?

With the SE-300, yes that spike is low enough it may not be audible. My point is how starkly different it is from the FR. With the Dan Clark Aeon Closed, look at the FR dip at 3k. Initially the CSD decays quickly, then rises to what looks like within 10-15 dB of the original amplitude, then drops, then rises again. This might be loud enough to be audible.

I don't claim anything about audibility; that would require ABX testing to determine. My point is to show that while ringing/CSD usually follows the FR curve, especially with headphones and short time windows, FR and CSD don't always follow each other.

 

[Jimbob54]

I hope that you can formulate a coherent message.

If you continue to focus on long Reverberation Times and looking deep into the noise floor you will continue to to find reflections and cognitively tangent ideas. The colorful room measurement plots do not help, they are only a distracting shinny object. You cannot hear the shine.

If you gate your measurements and not set the floor of your measurements down so far you will find that there is a very direct relationship between measured FR and what your hear.

If you continue trying to correct RT60 with EQ you will be an unhappy camper.

You were speaking about the Member that measures headphones on his site. He means well and I leave him alone. He uses a Flat Plane measurement jig (no rubber fake ears) with $0.69 egret measurement microphones. Any measurements are very unlikely to repeat if you happen to put the same headphones on your real head with real ears.

see all next year.

Dial back the high levels of condescension in your posts please .

 

[Benesyed]

Me reading these posts