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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: Adjusting Azimuth by ear posted by Aristides on May 7, 2007 at 02:48:35:
Hi Aristides,Your findings are interesting but IMO, you have a basic flaw in your experimental method? :-))
1. I think you need to use a sine wave tone, not pink noise - 300Hz, 1KHz ... whatever you have on a test record.
2. You need to put a sharp filter, centred around the frequency you are using, to stop extraneous surface noise interfering with the measurement. I use a 1KHz tone from the LP and a 24dB, 1-octave bandpass filter centred on 1Khz. This stabilises the sine wave on the CRO screen (or volt meter).
3. When you "measure" the crosstalk, you need to be aware that the two channels of your cartridge may not give the same output. If you adjust the crosstalk to be at the minimum, I suggest this will result in a slightly tilted stylus, to compensate for this channel imbalance. There were several subsequent posts to Brian's original article which suggested that the ratio of crosstalk:signal from one channel to the other was the best comparison.
I used to be obsessed by "scientifically" measuring crosstalk and being able to optimise azimuth by minimising this but, subsequently, I think that:
a) doing it approximately by looking at the cantilever and its reflection in a shiny surface (like a CD) - from the front, and then
b) adjusting azimuth by ear so that the image height from both speakers is the same,is the best method for optimising azimuth.
Regards,
Andy
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Follow Ups
- Re: Adjusting Azimuth by ear - andyr 05:50:46 05/07/07 (0)
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