Peavey SMRTM 821a user manual Input Connectors

Figure 10.	The next step is to configure the many rear panel switches for your applications.
Input Channel Bus Assign Switches and	Although the unit is shipped from the factory with default switch values‚ you should
	make sure that these settings are correct for your application. Let’s take a look at
Input Connectors
	each one and describe how it works.
	First there are the Channels 1–6 Bus Assign Switches (See Figure 10). These
	switches provide the ability to assign each input to the Left‚ Right or Aux output
	buses. In addition‚ you can turn on or off the phantom power on each channel. There
	is a single 8-position DIP switch for each TWO input channels. Take care you are
	adjusting the correct switch for each channel. It is recommended that you use a
	small screwdriver or other instrument to set the switches. Do not force the switches.
	Also‚ keep in mind that the ON position is UP. Figure 10 shows the DIP switches with
	all functions in the ON position. Note: The factory setting is all bus assign switches
	ON and phantom OFF.

Figure 11.	In approximately the middle of the rear panel‚ you will find a group of three switches. They
Mic Mix‚ Rt Out Mute and Low	include the Mic Mix‚ Rt Out Mute and Low Cut switches (Figure 11). The Mic Mix switch allows
	the summed signal of Channels 1–6 to be routed before or after the remote Left/Right volume
Cut Switches
	control. In the Pre Remote position‚ the signals from Channels 1–6 are affected by the remote
	volume control along with the stereo input from either Channel 7 or 8. In the Post Remote
	position‚ only the stereo input from either Channel 7 or 8 is affected by the remote volume
	control. The factory default setting is Pre Remote.

The Rt Out Mute switch controls the muting of the right bus mix. The factory setting of this switch is Enable. When enabled‚ the Left and Right mix buses are affected by the activity of the Channel 1 muting circuit. When this switch is defeated‚ only the Left bus is affected by the muting circuit. Use the Channel 1 Mute Threshold control to set the trigger point to activate the muting.

The Low Cut switch enables a filter with a corner frequency of 100 Hz and is helpful to filter out rumble‚ wind noise‚ breath thumps and other low-frequency signals that rob amplifier power and muddy the mix. Enabling this switch will affect Channels 1–6 only. The factory default setting for the Low Cut switch is Defeat or Flat.

Figure 12.

Channel 7 & 8 Mode Switches

The Mode switch (Figure 12) selects either Stereo mode or Mono mode for Channel 7 or 8. In the Stereo mode‚ the Left input signal feeds the Left mix bus and the Right input signal feeds the Right mix bus via the front panel Level control. In the Mono mode‚ the summed Left and Right input signals feed Left and Right mix buses. This allows for a mono source to be used to feed the stereo mix buses. Additionally‚ it allows for Left and Right outputs of the source to be summed without a Y-cable. In either mode‚ a summed mono signal feeds the Aux mix bus. The factory default is Stereo.

Figure 13.

EQ and Bus Link Switches

The EQ switch (Figure 13) places the 4-band stereo equalizer in or out of the Left and Right signal paths. In the OUT position the equalizer is completely bypassed. The factory default is IN. The Bus Link switch is used to place the mixer in the master or slave mode of operation. A stand-alone unit should always be in the master mode and the factory default is Master. See the Connections section of this manual for details on Bus Linking and using multiple units.

That completes the configuration. As you can see‚ the SMR™821a provides many powerful features for better‚ more cost-effective systems. The multiple combinations of routing‚ control and input assignment facilitate a wide range of applications.

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