SX-36 Mixer and Block Diagram

Antex electronic SX-5e, SX-6, SX-34 user manual SX-36 Mixer and Block Diagram

and right channels of a stereo signal. Also, only one record device is shown. The small circles with a letter inside correspond be- tween the Mixer Diagram and the Block Diagram. For example, referring to the SX-36 diagrams, the Line In On/Off control, la- beled “G” in the Mixer Diagram, is showing that when this control is “On”, the selector switch in the Block Diagram is in the “G” po- sition. In case you are not familiar with some of the symbols used, the triangles with the + and – inside are amplifiers. It is only important to understand that the Trim controls change the gain of the amplifier circuits. The circles with the Greek “E” inside are summing nodes. This means that all signals pointing with arrows to the circle are combined at this point into one signal.

Input Trim Control A determines the level of input signal at which clipping occurs. If set to +8, the maximum signal which can be input is +8 dBu, without being clipped by the A/D converter. This applies to having the record source set to G or I. If the record source is set to J, Line Out, a hotter signal may be input into the card and then attenuated with sliders C or E. This will be dis- cussed in more detail below.

Output Trim Control B determines the level of the output signal on Line Out which corresponds to digital clipping. If the control is set to +8, the maximum output signal level is +8 dBu. If the control is set to +20, the maximum output signal level is +20dBu. Note that these signal levels correspond to balanced outputs. If the outputs are wired as unbalanced, see the table in the section on “Bal- anced and Unbalanced Signals” to determine the actual output signal level.

Attenuators C, D, and E control analog feed-through levels. Slider C controls the level of the signal on Line In which is fed-through to the Line Out. Slider D controls the level of the Mic Input which is fed-through to Line Out. Slider E controls the level of the Aux In- put which is fed-through to the Line Out.