[Brooko]

I'm not to worried about it - most of the variances were well under 0.5 dB, and the stuff at the extremes is beyond my hearing anyway 

 

[alan_g]

Just got my hands on the x5 and wondered if anyone had used it withe the ibasso d10?

 

[JaZZ]

  I'm not to worried about it - most of the variances were well under 0.5 dB, and the stuff at the extremes is beyond my hearing anyway 

 
Well, above scenario just applies to Theo's example anyway, not an everyday equalization. You could even get an increase below 60 Hz and above 8 kHz if you happen to have headphones with e.g. a 31 Hz and a 16 kHz hump which need to be equalized by shifting the corresponding sliders downward.
 
Personally I use the X5 almost exclusively as data provider for the Chord Hugo. Otherwise I'd probably care for the possibly useless and sonically harmfull output capacitors – although I don't hear any bass drop-off, not even with the low-impedance SE846.

 

[TheoS53]

Gents,
 
maybe someone can help me figure something out. I've been running some tests with copper vs silver cables, and I have found a consistant and repeatable difference in the Group Delay within the 45-51Hz region
 
Pink is silver, black is copper

 
what is this group delay and how would it affect the audio? the fact that it is only (afaict) in the low bass region, seems to contradict the usual "silver is brighter" idea

 

[x RELIC x]

Gents,

maybe someone can help me figure something out. I've been running some tests with copper vs silver cables, and I have found a consistant and repeatable difference in the Group Delay within the 45-51Hz region

Pink is silver, black is copper



what is this group delay and how would it affect the audio? the fact that it is only (afaict) in the low bass region, seems to contradict the usual "silver is brighter" idea

Not the answer your looking for, but I would say that this is an indication that nature is far more complex than we can replicate or measure with our technology.

 

[TheoS53]

Not the answer your looking for, but I would say that this is an indication that nature is far more complex than we can replicate or measure with our technology.

agreed, but as technology advances, that complexity is an ever receding pocket 

 

[TheoS53]

To avoid going off topic and mucking up this thread..I've created a new thread for the results I found
 
http://www.head-fi.org/t/755418/copper-vs-silver-measured-surprising

 

[JaZZ]

  Gents,
 
maybe someone can help me figure something out. I've been running some tests with copper vs silver cables, and I have found a consistant and repeatable difference in the Group Delay within the 45-51Hz region
 
Pink is silver, black is copper

 
what is this group delay and how would it affect the audio? the fact that it is only (afaict) in the low bass region, seems to contradict the usual "silver is brighter" idea

 
Group delay is phase distortion (see also Wikipedia). Best is none. So the silver cable in the graph is less accurate in this area and in this respect than the copper cable. I'm puzzled that there can be such a strong measurable effect in cables. Is it repeatable? Have you also measured other (copper, silver...) cables?

 

[FlatulentDonkey]

All these charts are going way over my head 

 
I have my X5, my E12 and my AKG K550s that sound good and that's all I need to know 

 

[Kerouac]

  All these charts are going way over my head 

 
I have my X5, my E12 and my AKG K550s that sound good and that's all I need to know 

Oh well, in that case here's a very simplicated chart of X5+E12+AKG K550:
 

Enjoy

 

[Dobrescu George]

why is it such a low resolution?...

 

[Kerouac]

  why is it such a low resolution?...

Hmmmm, good question!
Maybe they used very low resolution files (mp3 @ 96 kbps) for this test chart...

 

[djselbeck]

  Hmmmm, good question!
Maybe they used very low resolution files (mp3 @ 96 kbps) for this test chart...

lol, good one

 

[FlatulentDonkey]

  Oh well, in that case here's a very simplicated chart of X5+E12+AKG K550:
 

Enjoy

 
Cheeky bugger 

 

[Chris J]

No, you're screwing it up. Here's Theo's initial statement:

If you select the custom EQ or one of the preset EQs and set the sliders to flat (as a starting point), you get a flat curve identical to EQ off, but have to live with a 6 dB volume decrease. The drop-off at the extremes in Theo's example is the result of the outer bands being 31 Hz and 16 kHz instead of say 12 Hz and 36 kHz. This while trying to compensate for the 6 dB volume drop-off by increasing all frequency bands accordingly.

And while I'm at it: Theo, how is the resolution of your graphs? Are they smoothed in any way? They seem to consist of assembled straight lines of the length of one octave, with hinted corners at the joints. That's not what I would expect from a measuring graph.

Or you could say that the EQ (when flat, i.e. all faders set to 0 dB) adds -6dB of gain.
Which may be useful if you are using IEMs.