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Author Topic: SR-307 Measurements  (Read 2077 times)

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ultrabike

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SR-307 Measurements
« on: October 11, 2014, 04:54:16 AM »
Some impressions here:

http://www.changstar.com/index.php/topic,1819.0.html

Some measurements:

Frequency Response



Distortion Right



Distortion Left



CSD Right



CSD Left



vs HD600 (Stax in red, Senns in yellow)

« Last Edit: October 11, 2014, 05:30:29 PM by marvey »
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ultrabike

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Re: SR-307 Measurements
« Reply #1 on: October 11, 2014, 05:06:59 AM »
Throwing SR-307 (red) vs SR-009 (yellow) fr comparo...



... and adding HD600 (green) to the fr overlay...

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Anaxilus

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Re: SR-307 Measurements
« Reply #2 on: October 11, 2014, 05:37:05 AM »
Yeah, I was getting a rather painful shoutiness with female vocals (Stevie Nicks).  I presume it's from the 8k peak preceded by the massive recessed trough.
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"If you do not change direction, you may end up where you are heading." - Lao Tzu

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ultrabike

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Re: SR-307 Measurements
« Reply #3 on: October 11, 2014, 05:43:28 AM »
That's my best guess as well. It can sound a bit bright with some material.
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donunus

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Re: SR-307 Measurements
« Reply #4 on: October 11, 2014, 05:43:50 AM »
That dip looks crazy
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ultrabike

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Re: SR-307 Measurements
« Reply #5 on: October 11, 2014, 05:50:20 AM »
LOL! could be a measurement artifact to some extent, but recession does seem to exist in the upper mids relative to other cans, also going by what we are hearing.
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DefQon

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Re: SR-307 Measurements
« Reply #6 on: October 11, 2014, 05:53:41 AM »
The 600's look pretty smooth in comparison to the other two.
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ultrabike

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Re: SR-307 Measurements
« Reply #7 on: October 11, 2014, 05:56:57 AM »
It's all relative... but yeah. Trade offs...
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ultrabike

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Re: SR-307 Measurements
« Reply #8 on: October 11, 2014, 06:27:54 AM »
Something to point out about these cans... or maybe the SRM-323S amp.
 
At 100 dB the SRM-323S + SR-307 combo seem to struggle in the treble area. Distortion increases to about 1% for the right channel and about .6% in the highs, but it's all kinds of high order harmonics:



Note also the distortion measurements don't go too high in frequency, but they seem to be increasing for the Stax combo as frequency increases...

HD600 struggles in the bass area at high SPL (100 dB), but the highs seem relatively clean of high order harmonics:


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Anaxilus

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Re: SR-307 Measurements
« Reply #9 on: October 11, 2014, 06:33:20 AM »
It's the amp, they did the same treble nastiness to my ESP950s as I increased SPL.  I think it would be wise if Stax could replace this loaner 323S with a proper functioning one.
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"If you do not change direction, you may end up where you are heading." - Lao Tzu

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