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Helpful Audio Terms Used Within This Website |
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Here are some simple definitions that you may find useful. |
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Belt Drive: |
The turntable motor is connected to the platter |
| via a pulley driven rubber belt. This results in | |
| lower motor noise transmission to the platter. | |
Cue Control: |
This is a device that raises and lowers the |
| tonearm for accurate positioning of the cartridge | |
| for accurate record track selection. | |
| Decibel (dB): | Unit Of Volume. The higher the value the louder |
| the sound. | |
Direct Drive: |
In Direct Drive turntables, the motor is coupled |
| directly to the platter. This results in a high | |
| torque platter and some claim more accurate | |
| speed. | |
| Fully Automatic Operation: | You put the record on the turntable and |
| press the "start" button and the rest of the | |
| operation is automatic with the unit turning | |
| off when the record has completed play. | |
Pitch Control: |
A knob that alters the speed of the platter |
| used in conjunction with the strobe light | |
| for setting an accurate platter speed. | |
| Usually the range is 6-10% of selected speed. | |
Rumble: |
Turntable rumble is a very low frequency |
| noise usually caused by the main bearing. | |
| Measured in dB (decibels). The higher the | |
| better. The weighted measurement of | |
| rumble is also known as "Signal To Noise | |
| Ratio", The higher the better. | |
| Semi-Automatic Operation: | When "start" is pressed the turntable will startup, |
| position the tonearm and the rest is a manual | |
| operation. The user will have to return the | |
| tonearm to the tonearm rest when record play | |
| is complete. | |
Stobe Light: |
A 60hz light that when shined on special markings |
| on a turntable platter will appear to "stop moving" | |
| indicating that the correct (selected) speed is | |
| being maintained by the unit. Some models do | |
| not have the light, but have the markings so with | |
| these units you supply your own 60hz light, usually | |
| a portable flourescent light will work. | |
ULM: |
Ultra Low Mass |
Wow & Flutter: |
Measures of speed instability, typically |
| of turntables and cassette decks. The | |
| lower the better. Measured in percent (%). | |
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