1.Input Pad switch applies a 14dB pad across the input jack when depressed.
2.Gain control varies the signal level at the output jacks. The gain markings around the knob indicate the amount of gain or attenuation being applied to the signal. The bold mark designates the normal position for +4dB to
3.Output Mute switch turns off the output signal when activated. It also illuminates the clip LED in a steady state to indicate that the channel is muted.
4.LED Indicators show the level of the signal at the output jacks. Green is set to light when the output signal is at
5.Power switch applies power to the unit and the Power LED indicates that the unit is turned on. There is an internal fuse, which if blown, prevents the power LED from lighting.
6.Female XLR input jacks on inputs 1, 2, 5, and 6 take balanced line level inputs to the respective channel's preamp section. The output of each preamp can be assigned (via internal jumpers) to other output channels in addition to the normal output.
7.RCA output jacks on outputs 1, 2, 5 and 6 deliver unbalanced signals from the line drivers and are controlled by the output gain pots. The RCA outputs may be used simultaneously with the balanced outputs (see 10) because they have separate driver circuits.
8.RCA input jacks on inputs 3, 4, 7 and 8 take unbalanced input signals to the respective channel's preamp section. These jacks are ground floated unbalanced inputs, which parallel the available balanced inputs (see 10) and can be grounded by connecting a jumper from "G" to
9.Male XLR output jacks on outputs 3, 4, 7 and 8 deliver balanced line level signals from the line drivers and are controlled by the output gain controls.
10.Screw terminal connections provide balanced signal connections for the channels with RCA jacks. The RCA jacks on inputs 3, 4, 7 and 8 are connected in parallel across the plus and minus terminals and can be grounded by connecting a jumper from "G" to
11.Ground lift switch - when depressed, disconnects audio common from earth ground.
12.Internal signal routing jumpers (not shown) allow flexible signal routing from input preamps to the line driver outputs. Each output is configured at the factory to deliver the signal from the corresponding input. Changing the jumpers sets up distribution amps, allowing multiple outputs to deliver the same input signal. (See “Description of Block Diagram”.)