Samson PL2404 manual Using Aux Sends and Returns

Using Aux Sends and Returns

AUX1L-2R

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AUX 3L 0

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AUX4R 0

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AUX RET.1

The PL 2404’s four Auxiliary sends allow you to combine the signal from multiple channels and send the resulting mix to external devices such as effects proces- sors. When an Aux send knob is at its 2 o’clock “0” position, the signal is routed with unity gain (that is, no boost or attenuation). As it is turned clockwise from the 0 position, the signal is boosted; as it is turned counterclockwise from the 0 position, it is attenuated. All Aux sends are post-fade; that is, the level of the signal is affected by the channel Level control and equalizer settings, as well as (in the case of channels 1 and 3), the mic Trim control.

The PL 2404 can accommodate up to twenty-four stereo channels, so we’ve designed the Aux sends so that, when a “matched” pair of consecutive 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 control acts as a true stereo Aux send, simultaneously setting the level of both sends equally. When only the even-numbered (right) input is connected to a channel, the signal can only be routed to Aux 2R and 4R. When only the odd-numbered (left) input is connected to a channel (the recom- mended way to connect monophonic devices to the PL 2404), the signal can be routed to any of the Aux sends.

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AUX RET.2

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AUX RET.3

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AUX RET.4

The PL 2404 also provides four stereo Auxiliary returns. These allow you to return signal from outboard devices in stereo pairs. In practice, you’ll probably want to use the Auxiliary returns to bring in signal from connected effects processors. Signal arriving at the left input is automatically panned hard left and signal arriving at the right input is automatically panned hard right. The PL 2404 Aux return jacks are unbalanced stereo inputs, with the tip carrying the left input signal and the ring carrying the right input signal (the sleeve carries common ground), as shown in the wiring diagram on page 11 of this manual. Insertion of a monophonic 1/4" jack into an Aux return will result in the incoming signal being automatically routed to the left input only (and therefore panned hard left). Each of the stereo Auxiliary returns is somewhat similar to a stereo channel, except that a signal being brought into to a channel can be equalized if necessary and optionally sent on to other outboard devices (via Aux sends or channel inserts).

The signal arriving at each of the four stereo Aux returns can be routed to either of the two bus pairs (1/2 or 3/4) with the use of the associated Aux Return bus switch (as described in #2 on page 6). The signal can then be routed to the Master and Control Room outputs by pressing in the associated bus L/R switch (as described in #10 on page 7). Note that signal arriving via the PL2404 Aux returns can be monitored over headphones only when the Solo/Main switch is set to “Main” (Aux Returns cannot be soloed). See the “Using PFL/AFL” section on page 22 in this manual for more details.

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