Free turntable speed check strobe

Not to knock anyone or anything that goes out of the way to make system set up easier ( especially for free ), i would be curious as to how these stack up against a "high tech" method of setting speed ? Anyone tried doing a comparison ?

My main concern is that most printers are not very accurate. If you happen to have one that plays games with the spacing, you might actually be DETUNING the speed if using this as a method of setting speed. I guess we'll have to wait and see if someone can test it. I have a KAB disc on the way ( won't ship till Monday ) and i can try it out against that. In the meantime, i'll fire it up against a table that has digital speed readout and see how they compare. Probably report back with results tomorrow ( Monday ) night. Sean
>

I just measured the accuracy of the downloadable disc to see how it checked out. I first verified the digital speed read out of this table by using the KAB Electro Acoustics strobe disc. I could leave the table in the preset 33.33 rpm mode and it did not vary from being perfectly strobed and showing the correct speed. As such, the KAB strobe disc and the internal clock of the TT show perfect sync. When i put on the downloaded strobe disc and used the KAB strobe light, i had to vary speed ever so slightly to get it to stand still. When all was said and done, the digital read-out on the TT registered 33.20 rpm.

While this is pretty close ( off by .13 revolutions per minute ), i don't know if it was caused by printer error or is a design error on the disc itself. As we all know, most consumer grade printers are NOT "precision" instruments. While the one that i'm using used to be Hewlett Packard's top of the line model, i've seen it do plenty of strange things. It would be nice if someone else could post their findings and state what they used as points of reference. Sean
>

PS... In case you're wondering, the table in question is a ReVox B-791.