Helpful Audio Terms Used Within This Website

Here are some simple definitions that you may find useful.

 

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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