Strobe question


Maybe this is obvious, but I have a speed disk to put on my TT for use with the VPI SDS, but what light source do you use to check accuracy? Do I go to Radio Shack or someplace and get a strobe light? Are their choices?
sonicthedog
I use a cheap GE light stick, an under-counter flourescent fixture that's small enough to hand-hold. Cost me $10 (at most) from Home Depot.

I emphasize cheap because, as others have noted, the light must flicker with the mains frequency (60 Hz in the USA) or the strobe effect won't happen. Some costly fixtures include capacitors or other devices to reduce flicker. That makes for nicer lighting (some people CAN see 60 Hz flicker) but it also makes them useless for strobe testing.
Thanks, All.

I have CFL lighting in my room, so that explains why I don't see any strobe effect. I'll try it with a plain incandescent and/or a strobe I have already!

Appreciate the help!
IF you can find a light which runs on battery power, it will not be effected by the fluctuating AC line and should provide a more accurate reading. Also if your strobe disk is small enough, you should try to play a dynamic LP as you are checking for speed by placing the stylus in the outer grooves. This will allow you to account for stylus drag.

I use the KAB strobe which works as described above, but it is expensive and some report not quite as accurate as the Timeline.
I had the same problem when I first got the SDS. I found the VPI supplied strobe disc useless. It was not flat, not round, and fluorescent light hardly worked with it. I got a KAB SpeedStrobe and problem solved. It's $100, but hassle free and simply an essential accessory with the SDS.