I N S T R U C T I O N M A N U A L
9
A500 AMPLIFIER
C O N N E C T I O N & S E T T I N G S (continued)
P R E C I S I O N - C A L I B R A T E D C O N T R O L P A N E L
Subwoofer Options
both
subwoofer options below are valid. The
OPTION 1
(Left-Right Stereo)
If an LFE (Low Frequency Effect) or Subwoofer output is available then use Option 2.
If no LFE o
then this (Option 1) is the preferred method of connection.
Per Option 1 in the drawing on the adjacent page, connect the left and right line level front channel outputs of
OPTION 2
(LFE)
Subwoofer output then this option will likely produce the best results. If no LFE or Subwoofer output is available
Per Option 2 in the drawing on the adjacent page, connect the line level LFE or Subwoofer output of your
Full Range Input Connection
left and right Full Range Inputs.
the LEFT channel input only.
Using the A500 Controls
subwoofer’s output to the room and to the primary speakers. These controls are titled Level, boost, Subsonic
Filter, Phase, Power Range, and Crossover Frequency. generally, the control with the most audible effect is the
Subwoofer Input Level, followed by the Crossover Frequency, boost, Subsonic Filter, Phase, and then Power
Range.
NOTE:
you may notice that the numeric values on the Precision-calibrated Control Panel are not evenly spaced.
represent the actual response of the controls. This allows you to more precisely tune your system.
A Word about the Numbers (Technical Stuff Explained)
Each of the A500 precision-calibrated controls uses one of 3 different scales, db (decibel), Hz (hertz), and
Degrees. What do these scales represent?
dB (decibel)
, as used on the A500, is a unit used to describe relative volume. The most important thing to
know here is that a 1db difference in sound level is just barely noticeable and that 3db is only a modest change
in perceived sound level. It is also important to note that each 3db increase in sound level requires a doubling
of power. As an example, an increase in output power from 1W to 2W and 200W to 400W each creates an
increase of 3db in sound level. Conversely, reducing power by 50% produces a 3db decrease.
A500.
A500.
A500
The
A500 has been fine-tuned so that these markings
