Propeller Head Plaza

Technical and scientific discussion of amps, cables and other topics.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: Cable shootout... Are all audio cables the same?

Posted by tomservo on June 23, 2014 at 19:26:26:
What electromagnetic wave are you talking about, cables at audio frequencies are FAR FAR too short to have any transmission line or wave behavior and there is no standing wave in audio cables.

To be clear too, the audio signal isn’t an electromagnetic wave, it’s a Voltage referenced signal, it is so starting at a microphone and ending with a loudspeaker and there isn’t anything about cables that make them “signal directional” with an AC signal.

If you don’t believe it’s ac, get an oscilloscope, set it to a DC or ground reference and look at any analogue signal you choose, or if you do digital, get a wave editor like cool edit and zoom in on the wave form, what do you see? Ans, a signal that goes positive and negative, just like the air pressure than we hear as sound.

Now I don’t doubt you can hear a difference, but it isn’t related to the signal passing through it and if this effect were actually present, it would be part of RF engineering where everything becomes more of an issue. Hell-ooo the effect is because you know which way the arrow points and when it’s “right’.