Ashly manual Physical Description, MX-406 Front Panel

Page - 6 Operator Manual – MX-406 Mixer

Safety Instructions – 3

Introduction - 4

MX-406 Mixer – 5

Connectors & Cables – 5

Physical Description - 6

Front Panel

Rear Panel

Installation – 7

Typical Applications - 8

Factory Configs - 8

Troubleshooting - 9

Dimensions - 9

Specifications - 10

Warranty - 11

Physical Description

The MX-406 is 2RU, and weighs 13 pounds.

MX-406 Front Panel

1.Input Gain - This three position switch sets the operating level of the microphone and line input preamp. The corresponding switch values - 20db, -40dB, and -60dB refer not to the actual gain, but rather to the expected nominal input signal strength. Line level inputs (1/4" jack) will likely use a setting of -20dB, while mic inputs generally require a setting of -40dB for close mic applications, and -60dB for quieter signals. If a channel's clip LED is blinking, first turn down that channel's level control. If the clip LED is still flashing, turn down the input gain.

2.Clip - Input Clip LEDs monitor critical points within the input channel. The clip LED turns on whenever any portion of the audio path reaches dB below actual clipping.

3.Treble/Bass - This concentric knob is used for broad EQ changes to each input channel. Channel EQ consists of a high shelf control (treble) at 4KHz, and a 250Hz low shelf control (bass). EQ boost or cut is ±12dB.

4.Aux - The aux send is an additional level control used to send signal from each input channel to monitors or an effect unit. The aux master output combines all channel aux level signals. The aux control is factory set to pre- fader, pre-EQ, but can be internally switched to post-fader, post EQ. To make this change, refer to the procedure on page 8.

5.Level and Pan - This concentric knob adjusts the level and stereo position of each channel. If a channel's level control is always turned up to 9 or more, try increasing the gain first. Conversely, if the level control is consistently turned down to 1 or less, decrease the gain setting first.

6.Stereo Line Input - This control adjusts the level of the RCA jack stereo line input. It can be used for tape, CD, or DVD audio inputs, and can also be used for a stereo effect return. The stereo line input can be used as stacking inputs for supplementing the MX-406 with another mixer.

7.Aux Master Output - This control adjust the level of the aux master 1/4" jack output, which gets its signal from the six aux level controls on the input channels. It is used for an effects unit send, or can drive a power amplifier for monitors or an extra loudspeaker zone.

8.Stereo Output Level - These two controls determine the signal level to the 1/4" jack left and right outputs. They are used to drive power amplifiers for the main loudspeakers, or to connect to a stereo recording device.

9.Mono Output Level - This control adjusts the level of the summed mono output. It is completely independent of the main left and right master controls. In other words, changes to either left or right output level will not affect the mono output level.

10.Headphones Level - This control adjusts the level of the stereo signal to the headphone jack. Headphones should have an impedance of 600 ohms or greater.

11.Output Meters - A pair of peak reading 10 segment LED meters are used to indicate stereo output level in VU. 0 VU is equivalent to +4 dBu (1.228Vrms). Green LED's are used below 0 VU, yellow above 0 VU and two red LED's indicate clipping. The clip LED's turn on 3dB below actual clipping, detecting excessive signal level on any critical audio path within the master section. If all outputs are turned down and there is still clipping, then one or more inputs must be turned down.

12.Phantom Power LED - The phantom power switch is on the back panel. When the switch is pressed in, the LED is lit and +48VDC is applied to all six mic inputs for use with condenser microphones. If there is a mix of both condenser and dynamic microphones, the phantom power will not affect the operation of most dynamic mics.

Copyright© 2007 – Ashly Audio Inc.