Insert jacks can be used as channel direct outputs; post-gain, and pre-EQ. See the connector section on page 30 (figure G) showing three ways to use insert cables.

10. MONO LINE INPUTS (Ch. 1 and 2)

These 1/4" jacks share circuitry (but not phantom power) with the mic preamps, and can be driven by balanced or unbalanced sources.

To connect balanced lines to these inputs, use a 1⁄4" Tip-Ring-Sleeve (TRS) plug, wired as follows:

Tip = Positive (+ or hot) Ring = Negative (– or cold) Sleeve = Shield or ground

To connect unbalanced lines to these inputs, use a 1⁄4" mono (TS) phone plug, wired as follows:

Tip = Positive (+ or hot) Sleeve = Shield or ground

These line-level inputs can also accept instrument- level signals if the hi-z switches [18] are pressed in. This allows you to connect guitars directly to channels 1 and 2, without the need for a DI box. The input impedance is optimized for direct connection, and high-frequency fidelity is assured.

11. STEREO LINE INPUTS (Ch. 3-8)

These 1/4" jacks can be driven by balanced or unbalanced sources.

To connect balanced lines to these inputs, use a 1⁄4" Tip-Ring-Sleeve (TRS) plug, wired as follows:

Tip = Positive (+ or hot) Ring = Negative (– or cold) Sleeve = Shield or ground

To connect unbalanced lines to these inputs, use a 1⁄4" mono (TS) phone plug, wired as follows:

Tip = Positive (+ or hot) Sleeve = Shield or ground

If you just have a mono source, plug it into the left input (labeled left/mono), and the signal will appear (as if by magic) equally on the left and right of the main mix.

12. AUX SEND 1 and 2

These 1/4" TRS connectors allow you to send balanced or unbalanced line-level outputs to external effects devices, headphone amplifiers, or stage monitors. These could either be passive stage monitors powered by an external amplifier, or powered stage monitors with built-in power amplifiers.

Aux send 1 and aux send 2 are independent of each other, so you can set up two separate aux mixes.

The aux 1 send signal is the sum (mix) of all the channels whose aux 1 send control [32] is set to more than minimum. The aux 2 send is the sum of all the channels whose aux 2 send control is set to more than minimum. The overall aux output level can be adjusted with the aux send master controls [45].

The aux sends can either be pre or post fader, depending on the position of the pre/post switches [46]. For stage monitor work, use pre, so the stage monitors do not increase in volume when the channel level is adjusted. Imagine how upsetting that can be to big hairy drummers. This allows you to set up the monitor mix and levels just right, and not have it change every time a channel level is adjusted.

For external processors, use post. In this way, the feed to external processors will vary with the channel level, so the level of any returned effect (like an echo) will also change if the channel level is changed, keeping them in the same ratio (wet/dry).

13. AUX RETURN 1 and 2

These 1/4" TRS stereo input connectors allow you to add the stereo processed output from external effects processors or other devices to the main mix.

Level adjustment of the incoming signals is made with the aux return controls [47].

The signals going into aux return 2 can also be added to aux send 1 by engaging the return to aux 1 switch

[48].For example, you could add effects from an external effects processor to your stage monitors.

You can also use these inputs to add any stereo line- level signals to your main mix, so it could be another line-level source, not just an effects processor.

If you are connecting a mono source, use the left (mono) aux return input, and the mono signals will appear on both sides of the main mix.

14. LEFT/RIGHT 1/4" MAIN OUTPUTS

These 1/4" TRS output connectors provide the balanced or unbalanced line-level output of the main mix to an anxiously-waiting world. This is the same signal that appears at the XLR main outputs [4] on the rear panel, except it is not affected by the main output level switch [5].

Connect these outputs to the next device in the signal chain, such as an external processor (graphic equalizer or compressor/limiter), external power amplifiers running passive loudspeakers, or to the inputs of powered loudspeakers. They could also be connected to the inputs of a balanced 2-track recorder, when doing a "live to 2-track" type recording.

Owner's Manual 15