John Dunlavy On "Cable Nonsense"

Waveform measurments are made all the time and no differences are foundusing the test as I suggested above. Your results are flawed because it is near impossible to gather accurate acoustic measuments in a standard reflective rool with a time averaged meter as the RS. You will have better measurments to use a dvm at the speaker terminals so all of the sound bouncing off the walls do not enter into your measurments. Good luck though!

leme

My suggestion is just to confirm your measurements. If there are differences with the RS acoustic meter you will also see differences with a voltage meter. A 2dB bass hump due to cabling is unexplainable and unreasonable. Are you using music as a source? You state the measuments we taken at the same time during each trial. I hope you can try with a test cd with tones.

thanks for the help

leme

You can invert the polarity of one channel and measure accross the positive leeds at the speaker, with a mono source you will then be measutring the difference between channels. Then with different cables on each channel, you will be measuring only the difference caused by the cable and since the differences will be very low you can add amplification to bring the signal above the noise floor of your sound card. An intersting variation of this descrived by Hafler allows you to listen to the difference signal directly.