Wide bandwidth amplifier and AES cable

[Kimo]

My amplifier goes to 11.  Actually, it goes to 400k via internal limitation and 1.2 without.  I am wondering if I would be best served by using AES cables for the analog input, vs plain old XLR cables, due to the former's technically superior handling of higher frequencies?  Also, might an unshielded XLR cable work better, due to its reduction in stray capacitance?  The set up is fully balanced without a transformer in sight.

 

Perhaps, there are some Spectral owners in the house.

[The Computer Audiophile]

I used to have Spectral gear. Loved it and still sometimes wish I had it. Very hard to get it to not hum, like a ground loop, and stay working. 
 

Sorry, I don’t have an answer for your question though. 

[botrytis]

I don't not know this equipment, but if it has an unbuffered line attenuation (like a passive pre-amp), the resistance/capacitance changes based on volume - I had this on a Bow Technologies Wazoo. The sound changed based on how high the volume was. This would be impossible to deal with using cables.

[botrytis]

I forgot to add the change in volume will change how the speaker sounds, also. With the Bow Tech Wazoo it was NOT subtle at all.

[Kimo]

Well, I called around.  Talked with some amplifier makers.  The definitive answer is could be something to it, with respect to using the AES cable.

[Speedskater]

Hopefully there is no analog signal above about 40 kilohertz! Anything higher is distortion, ringing or interference. Sometimes these high frequency problems can cause IM distortion in the audible range.

But the higher frequencies carried by an AES digital interconnect cable are in the 10 to 20 megahertz range.

[Kimo]

I found this little comparison of cables at 60'.  3' is a lot less, but I wonder how things look at 40 khz.

 

 

 

[Speedskater]

That chart looks way, way wrong!

[botrytis]

[Kimo]

39 minutes ago, Speedskater said:

That chart looks way, way wrong!

Got it off Gear Space.

 

Tougher to finds these things on the Internet than I thought.  Perhaps, one of the Subjectivists here nefariously downloaded something to my computer.

[The Computer Audiophile]

4 minutes ago, Kimo said:

Got it off Gear Space.

As Abe Lincoln said, "I saw it on the internet, it must be true." :~)

[Kimo]

Just now, The Computer Audiophile said:

As Abe Lincoln said, "I saw it on the internet, it must be true." :~)

Where else would I get something like that.  I have to buy fuses from Amazon these days.

[Kimo]

Well, here is the link anyway.

 

https://gearspace.com/board/so-much-gear-so-little-time/372978-quad-mic-cable-mogami-vs-canare-2.html

 

Attribution is very important.

[Speedskater]

I couldn't find the post that describes the test setup, but the chart still looks wrong.

Heck in pro concert hall recording, 300 to 500 foot cables are common.

In a modern interconnect system with a 200 Ohm output impedance an a 20 kOhm load.

The chart looks more like 1000 to 2000 foot cables.