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Old 14th December 2011, 05:29 PM   #31
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Quote:
Originally Posted by AndrewT View Post
the electronics at each end of the cable should already be designed and built to suit typical cable types.
If it's not, then it's incompetently designed/developed/productionised/retailed.
You were proposing Twisted Pair cables, Andrew. That would be a major rebuild in most devices which are supplied only with simple shielded leads terminated in RCA/CINCH connections.
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Old 14th December 2011, 06:08 PM   #32
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Quote:
Originally Posted by AndrewT View Post
As a follow up:

I built and tried a DCB1, Hypnotize (2 versions) and Mezmerize (1 version) in my system.

So many Members, that have built a DCB1, claim extraordinary improvements in the sound quality coming from their systems, that I cannot possibly go wrong by investing some time and some money in trying it for myself.

I was disappointed.

I could not hear any change in the sound quality between any of the 4 setups.
Admittedly this was/is with just two source components. A DVD player replaying genuine CDs and an FM only tuner replaying a wide variety of Radio music.

I guess that the reason for not hearing a change is because I don't have a misbehaving source/s. The Source component/s is/are designed to interface with the normal range of typical interconnects and receivers.

Inserting the buffer cannot correct misbehaviour, if it is not there to be corrected.

The cables did not cause the system to misbehave. The cables did not have a sound of their own. The buffer could not improve on the equipment to cable interface. I could not hear the resultant change in sound quality performance.
I support your observations 100%. It is placebo effecting those who hear magical improvements in their systems by changing the wire. Unless the previous wire was a string between two canned fruit tins.
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Old 14th December 2011, 06:47 PM   #33
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here is the Belden point of view



For unbalanced analog audio, realistically the cable impedance doesn't
matter unless the cable is many miles long (based on the wavelength of a
22kHz signal). Coax is quite convenient because RCA connectors match
nicely.

For balanced analog audio, coax should not be used, but only because you
would lose the noise rejection properties that are an integral part of
balanced audio systems.

Another way to look at this is that output impedance of an analog audio
amplifier is designed to be many orders of magnitude larger than that of a
speaker. That huge disparity alone makes any impedance mismatch with the
cable inconsequential. Calculable difference of course, but
inconsequential by magnitude.

For the audiophile community, yes, on paper there is a calculable
difference. The question at that point is does it make a realistic
difference to the listener. To some yes, to some no. With exceptions only
amongst those that cater specifically to the audiophile community, the
overall professional broadcast industry tends to lean toward the latter
position.

Thanks,

David



From: Marilyn Field/Richmond/BeldenCDT

To: David Desmidt/Richmond/BeldenCDT@BeldenCDT

Date: 12/14/2011 12:56 PM

Subject: Fw: Belden.com Question/Comment Submitted
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Old 14th December 2011, 06:58 PM   #34
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by sakis View Post
here is the Belden point of view .............
............Another way to look at this is that output impedance of an analog audio amplifier is designed to be many orders of magnitude larger than that of a speaker. ..........
I hope that is a misquote.
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Old 14th December 2011, 07:02 PM   #35
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what ever ...its just a copy paste of the email they sent to me
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