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Old 30th January 2014, 10:21 AM   #21
Mooly is online now Mooly  United Kingdom
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Quote:
Originally Posted by wintermute View Post
I've just had a listen with my cheap logitech usb headphones on my laptop (which are the best I have), and I definitely at this stage wouldn't try an ABX with foobar because I can't pick up on anything that I could use as a differentiator. I might try with a different set of (equally cheap) analogue headphones with my focusrite 2i2 and see if that makes any difference

Tony.
That would be great Tony. Mabe try the "active test" too
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Old 30th January 2014, 10:25 AM   #22
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Quote:
Originally Posted by PMA View Post
I have not concentrated on any detail. Just the overall tonality of the introductory bow part, that was all. But I have not tried headphones, I have one of my Quadral floor standing speakers 50cm next to my left ear
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Originally Posted by Max Headroom View Post
On Stax ES phones, I hear the same.

Dan.
Thats brilliant, and this really is the perfect opportunity to carry this kind of test forward.

Max, your Stax ES's should be very revealing. If you can choose one reference file and ABX that with a selection of the random ones... now that would move this kind of test into new territory.
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Old 30th January 2014, 10:33 AM   #23
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This is the component line up. The IC is for scale reference.

Click the image to open in full size.

The two 4.7uf's were strung between another set of identical RCA sockets with the appropriate termination resistance. (Only reason I disassembled them was to string in another network for my own amusement for something different). You can see the electros are matched types between channels, and that some of them are the "cheap of the cheap" ultra miniature types of "generic" branding with no pretension to audiophile use at all.
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Old 30th January 2014, 10:48 AM   #24
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Did you experimentally confirm that the frequency responses were the same?
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Old 30th January 2014, 11:01 AM   #25
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Did you experimentally confirm that the frequency responses were the same?
Only with a scope and only at the lower frequency end. I used a Philips test CD as a signal source that goes down to 2Hz.
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Old 30th January 2014, 11:02 AM   #26
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Really struggling Mooly!! I thought I could hear a difference (with the focusrite and non usb headphones), then I started up the abx in foobar, first three attempts I got wrong! Now very much doubting that what I thought I could hear I actually could.

I can have a listen on my main system but probably not tonight. I found with pano's original interconnect test that I could pick up differences on my speakers that I couldn't on the headphones, only problem is I can't run foobar on my main system, as it is linux based...

Tony.
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Old 30th January 2014, 11:16 AM   #27
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Hi Tony,
listening on a really good set up is what this test demands really. Foobar with good headphones should be revealing though. See what you think on your main system
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Old 30th January 2014, 11:41 AM   #28
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Quote:
Originally Posted by wintermute View Post
Really struggling Mooly!! I thought I could hear a difference (with the focusrite and non usb headphones), then I started up the abx in foobar, first three attempts I got wrong! Now very much doubting that what I thought I could hear I actually could.
It may be worth considering that the Foobar ABX software itself is veiling the differences - personally, I find there is too much loss of clarity using this processing, on my setup ...
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Old 30th January 2014, 12:10 PM   #29
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Originally Posted by fas42 View Post
It may be worth considering that the Foobar ABX software itself is veiling the differences - personally, I find there is too much loss of clarity using this processing, on my setup ...
With all respect, Frank, NO. Only in case of wrong settings or rather poor hardware used. I have it proven with numerous real tests and measurements.
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Old 30th January 2014, 12:16 PM   #30
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Originally Posted by Mooly View Post
at the lower frequency end.
Cool, that was the part I was concerned about. Really nice job here- it's great to see someone take the trouble to try to actually do this right.
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