I got a test record from Amazon US which is smooth black and has no grooves. It is used for setting the anti-skate for turntables. It worked very well. I just put up a video of it on my site.
Basically since the disc is smooth and grooveless, you play the disc and place the stylus on the disc in the middle somewhere, and then adjust your anti-skate till the tonearm stays near the centre of the playing area. If you have too much anti-skate force, the tonearm swings to one edge, and if too little, it swings to the other edge.
I found that this kind of calibration record is needed for many modern tonearms which do not have any clear calibrated adjustment dial, and also in case we want to actually verify whether recommended ASF settings are working correctly for us.
The blank record is available on Amazon US: https://www.amazon.com/Blank-Vinyl-Records-BLACK-VINYL/dp/B00HZ5T1NA/ No, I have no idea whether anyone in India sells a similar thing.
Basically since the disc is smooth and grooveless, you play the disc and place the stylus on the disc in the middle somewhere, and then adjust your anti-skate till the tonearm stays near the centre of the playing area. If you have too much anti-skate force, the tonearm swings to one edge, and if too little, it swings to the other edge.
I found that this kind of calibration record is needed for many modern tonearms which do not have any clear calibrated adjustment dial, and also in case we want to actually verify whether recommended ASF settings are working correctly for us.
The blank record is available on Amazon US: https://www.amazon.com/Blank-Vinyl-Records-BLACK-VINYL/dp/B00HZ5T1NA/ No, I have no idea whether anyone in India sells a similar thing.
