Input impedance of PRE vs sensitivity to disturbance

Status
Not open for further replies.
What I try to say is that the connectors at the edge of the cables are really of few important in the audio quality of the signal transported, more important are the electrical characteristics of the cable itself, usually the length is far bigger, and the low pass effect (loss of treble notes) in a long or high capacitance cable) is responsability of the cable, nor the connectors.
 
And, both together with the Thevenin´s theorem gives an resistance in the circuit. The capacitance in the cable shunts this resistance giving a susceptance in // to the input conductance (inverse of the input resistance), forming a frequency sensible voltage divider, creating a low pass filter and a phase delay in the wire,

This was the difficult part ... I realise the cable itself has more influence on the interlink behaviour.
 
If you mean 'high-end' to mean expensive but poorly designed then yes.

Well-designed equipment is not sensitive to cable details.

I believe that cable influence is sensitive about of the design of a chain of electronic sets. Try the best audio chain using a twisted power cord a cable for interconnect them. Or a TV lined to a camera using 300R unshielded cables. The well designer must take into account all details.
 
Of course a cable has to be appropriate. I didn't mean proper engineering details such as digital interconnect characteristic impedance, but the silly things which some audiophiles get excited about. To make a relatively short connection from a competently-designed preamp to a competently-designed power amp you can use any competently-built appropriate interconnect cable. If you want extra distortion or interference then you need to buy an expensive cable or make your own.
 
Sorry, I was referring to those who make their own because they fondly believe that the companies who make them on advanced machinery are somehow incompetent. If you can't obtain cables then I guess you have to make your own - and I assume you know what you are doing, anyway.

I note that very few audiophiles make their own resistors or valves/BJTs, yet these can have a far greater audio effect than cables.
 

Attachments

  • Audio 02.JPG
    Audio 02.JPG
    152.7 KB · Views: 86
  • Audio 03.JPG
    Audio 03.JPG
    143.4 KB · Views: 80
  • Audio 04.JPG
    Audio 04.JPG
    135.9 KB · Views: 76
  • Master SCSI 02.JPG
    Master SCSI 02.JPG
    158.3 KB · Views: 88
  • Master SCSI 01.JPG
    Master SCSI 01.JPG
    147.1 KB · Views: 80
Last edited:
Status
Not open for further replies.