CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS

Lobby => Headphone Measurements => Topic started by: Marvey on May 16, 2012, 10:21:44 PM

Title: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Marvey on May 16, 2012, 10:21:44 PM

Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
80Hz

[I used a different FFT size for the HP1000 measurement, so the spike will look more narrow on the HP1000 compared to the other headphones]

All tones are at 90db SPL - so disregard the graph markings - or calibrate accordingly.

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Marvey on May 16, 2012, 10:23:04 PM

1000Hz

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Marvey on May 16, 2012, 10:23:13 PM

2000Hz

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Marvey on May 16, 2012, 10:23:22 PM

4000Hz.

Whoa. The STAX hit a sore spot. The 007 has a minor resonance at 8kHz (2nd fundamental of 4kHz).
See CSD:  http://www.changstar.com/index.php?action=dlattach;topic=297.0;attach=1004;image (http://www.changstar.com/index.php?action=dlattach;topic=297.0;attach=1004;image)

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: maverickronin on May 17, 2012, 12:15:04 AM

Interesting peak on the 007.  I guess it's good that it's so narrow so it doesn't get excited as much.

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Maxvla on May 17, 2012, 12:42:13 AM

Looks like a sweep by the HP1000.

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Marvey on May 17, 2012, 12:52:59 AM

Except in the bass. The HP1000 has a good amount of 2nd order at 80Hz. I should take another at 150Hz.

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: Anaxilus. on May 17, 2012, 02:31:47 AM

I wonder how my HP2's will compare.  Maybe do a pre and post-mod measure.  Bring over the HD800 as well.

Title: Re: Full Spectrum Distortion Measurements for W3000, HP1000, and SR007
Post by: anetode on May 17, 2012, 11:48:49 PM

I'm pretty impressed by the Grados, even at 80hz. Highest harmonic is 40db down and the THD is dominated by the 2nd. Not bad at all.

Likewise, I expected the 007 to make a stronger showing. Guessing that the resonance responsible is an inescapable consequence of the large-diameter metal cups