Antex Electronics SX-5e - Manual (Page 44)

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SX-5e MIXER AND BLOCK DIAGRAM
Due to the simplicity of the SX-5e, the Antex Mixer does not add
control of any features that are not accessible through the Antex
Demo. The Play 1 and Play 2 Sliders duplicate the function of the
sliders in the Antex Demo program.
K L
Figure 15. SX-5e Mixer
Play 1 and Play 2 Sliders, K, and L control the level of the files
being played back. Note that these sliders operate in the digital
domain. They amount to multiplication routines in the DSP which
take the signal level and multiply it by a scaling factor between 0
and 1. This is important to note because using these sliders as a
master volume control will degrade the signal to noise ratio. This
is because using these controls lowers the signal levels while
leaving the noise floor unchanged. These controls are intended to
mix 2 playback files together, or to fade a file up or down at the
beginning or end, not as a master volume control. Best signal to
noise ratio will be achieved by setting Sliders K or L to maximum