Samson PL2404 User Manual download pdf (Page 6)

Guided Tour - Channels

1: Equalizer (violet) - These knobs determine the amount of boost or attenuation in each

of three frequency areas (up to 15 dB for each area). The mid frequency control (centered

at 1 kHz) utilizes a resonant (“bell”) peaking curve, while the high and low frequency

controls (centered at 10 kHz and 80 Hz, respectively) utilize shelving curves. The EQ

setting affects both the odd- and even-numbered channel inputs, although the signals

remain separate. A center detent in each knob (at the “0” position) indicates no boost or

attenuation (that is, flat response). As each knob is turned clockwise from the “0” position,

the frequency area is boosted; as it is turned counterclockwise from the “0” position, the

frequency area is attenuated. For more information on the application of EQ, see the

“Using Equalization” section on page 19.

2: Auxiliary sends (blue) - These knobs (labeled “Aux 1L-2R,” “Aux 3L,” and “Aux 4R”)

allow you to route signal to any of the PL 2404’s four Auxiliary outputs. These are typically

used to route signal to outboard effects devices. When a pair of channel inputs (that is,

both odd-numbered and even-numbered) are connected, the odd-numbered (left) input

signal can only be routed to Aux 1L and Aux 3L, while the even-numbered (right) input can

only be routed to Aux 2R and Aux 4R. In this case, the Aux 1L-2R send acts as a stereo

auxiliary send, with the left side of the input signal routed to Aux 1L and the right side rout-

ed (at equal level) to Aux 2R. When only the even-numbered (right) input is connected, the

signal can only be routed to Aux 2R or Aux 4R. When only the odd-numbered (left) input is

connected, the signal can be routed to any of the four Aux sends. When an Aux send knob

is at the “0” (2 o’clock) position, the signal is routed with unity gain (that is, no boost or

attenuation). As each Aux send knob is turned clockwise towards the “+10” position, the

signal is boosted (by a maximum of 10 dB); as it is turned counterclockwise towards the

“∞” position, it is attenuated (at the very bottom, it is attenuated infinitely—in other words,

no signal is routed). All four Aux sends are post-fade; that is, the level of the signal is

determined by the position of the channel’s Level control, its EQ settings, the position of

the main Level control, and (in the case of channels 1 and 3) Trim control. For more

information, see the “Using Auxiliary Sends and Returns” section on page 20.

3: Solo On/Off switch - When pressed in, the channel is soloed (in headphones only, and

only when the Solo/Main switch in the PL 2404 main section is in the Solo position).

Soloing will be in either PFL (Pre Fade Listen) or AFL (After Fade Listen) mode, depending

upon the setting of the PFL/AFL switch in the PL 2404 main section. See #7 and #8 on

page 7 and the “Using PFL/AFL” section on page 22 for more information.

4: Mute 3/4 switch - When up, the channel’s signal is routed to the Bus 1/2 faders and

then on to the Bus 1/2 and, optionally, Main and Control Room output jacks (if, as

described in #10 on page 7, the Bus “L/R” switches for those buses is pressed in). When

pressed in, the channel’s signal is instead routed to the Bus 3/4 faders and then on to the

Bus 3/4 and, optionally, Main and Control Room output jacks (if, as described in #10 on

page 7, the Bus “L/R” switches for those buses is pressed in). If you set the Bus 3/4 faders

all the way down (to their “∞” position), this switch can be used for channel muting. See

the “Busing, Submixing and Channel Muting” section on page 17 for more information.

5: Balance (brown) - When a pair of channel inputs (that is, both odd-numbered and

even-numbered) are connected, the odd-numbered (left) input signal is automatically

panned hard left and the even-numbered (right) input signal is automatically panned hard

right. In this case, the “Balance” knob controls the relative levels of the paired input

signals. When the knob is placed at its center detented position, both signals are at equal

strength. When moved left of center, the odd-numbered (left) input signal remains at the

same strength but the even-numbered (right) input signal is attenuated; when the knob is

moved right of center, the even-numbered (left) input signal remains at the same strength

but the odd-numbered (right) input signal is attenuated. When placed fully counterclock-

wise, only the odd-numbered (left) input signal is heard (panned hard left); when placed

-15

+15

MID

LOW

∞

BALANCE

-15

+15

AUX

+10

∞

AUX

+10

MUTE

3/4

∞

+10

LEVEL

CH 1/2

-15

+15

HIGH

∞

AUX

+10

1L-2R

SOLO

ON OFF

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Samson PL2404 User Manual Page 6

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