Samson S4000, Owner'S Manual, Page: 18 / 32

18
Controls and Functions
When the POST switch is in the down (POST) position, the signal feeding Aux 2 is sent after
the fader, so the channel Fader has an effect on that level, meaning the Aux level tracks up
and down with the channel Fader. This is the normal setting for using Aux 2 as an effects send,
since when you set the channel louder you normally want the effect to get louder.
21. AUX 3/EFX 1 (Post Effects Fader Send) - The S4000 provides high quality, 24 Bit digital effects,
and the level of effects can be set independently on each channel. The channel’s EFX knob
controls the amount of signal that is sent to the EFX bus. The signal of the EFX bus is routed to
the DSP EFX section for on-board signal processing. On the S4000 the EFX1 signal can also be
sent to an external effect device connected to the EFX 1 SEND jack located on the front panel
jack field.
22. AUX 4/EFX 2 (Post Effects Fader Send) - The channel’s EFX (Effects) knob controls the amount of
signal that is sent to the EFX bus. The signal of the EFX bus is routed to the DSP EFX section
for on-board signal processing. The EFX2 signal can also be sent to an external effect device
connected to the EFX 2 SEND jack located on the front panel jack field.
NOTE: The signal feeding EFX1 and EFX2 is sent after the channel Fader, so the channel Fader
has an effect on that level, meaning the Aux level tracks up and down with the channel Fader
23. BALANCE Control - This control is used to place, or position, the stereo signal into the main Left
and Right stereo mix field. You can create a stereo image by panning some input signals to the
left and others to the right.
24. MUTE switch - The stereo Input channels feature a large, backlit MUTE switch allowing you to
easily turn the channel's audio on or off. When MUTE switch is illuminated, the channel is off,
conversely, when the back-light is off, the channel is on.
25. PFL (Pre Fader Listen) switch - The channel’s PFL, or Pre Fader Listen switch allows you to listen,
or “solo” a channel or group of channels in the headphones. When the PFL switch is pressed
down, the channel is assigned to the solo bus and can be heard in headphones plugged in to
the PHONES connector located in the front panel jack field. Since the signal is sent
pre fader ,
you can hear the signal regardless of the position of the channel volume Fader. This allows you
to listen to a channel by itself without having to play it through the main PA speakers.
26. PEAK LED - The preamp includes a PEAK LED which when illuminated, indicates that the signal
is peaking or overloading. To reduce distortion, lower the GAIN control to keep this LED from
staying on.
27. VOLUME Fader - The VOLUME Fader control adjusts the level of each mono input channel.