the lines of dots that spin as the turntable does, what are those for?
2006-12-19 14:34:34 · 4 answers · asked by alexschmitt03 1 in Entertainment & Music ➔ Music
speed control
2006-12-19 14:37:13 · answer #1 · answered by guru 2 · 0⤊ 0⤋
They act as strobe lites, and allow you to adjust the speed of the turntable. When the turntable is set at 33 1/3 rpm, one line of those dots is going to look like it's standing still or close to it. If there is a + or - adjustment knob you can turn it until it looks like the dots aren't moving. This allows you to calibrate the turntable to the right speed for the best tone and sound reproduction. Changing the speed will change the tone of the recording... try it and see.
2006-12-19 14:42:22 · answer #2 · answered by dathinman8 5 · 1⤊ 0⤋
They are part of a stroboscope which is a device for measuring small changes in speed. There should be an orange light on the turntable that shines on them. Each row corresponds to a speed setting.
One of the rows near the orange light will appear to stand still or move slowly. There should be a knob on the turntable that is labeled "pitch." Rotate that knob to adjust the speed of the platter. When the dots appear to stand still, the pitch is adjusted correctly.
Adjusting the pitch will change the way the music sounds.
2006-12-19 14:41:48 · answer #3 · answered by Jimbo 3 · 0⤊ 0⤋
wow.... turntables. how old are you?
they are like the prev guy said - when you look at them as the turntable is turning, one of the lines is "right" so you know what speed you're on.
2006-12-19 14:42:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋