Voice-Matic Setup Procedure (AM-4080, DE-4080, VM-4083, etc.)

1. Connect all input sources to the MIC/LINE inputs. Connect MAIN and AUX outputs to their designated inputs.

2. Set all channel switches in the desired configuration. When using dynamic microphones, the phantom power switch should be set to the (OFF) position. When using condenser microphones the phantom power switch should be set to the (ON) position and the 20 dB pad may have to be enabled. If a wireless receiver is connected to one of the MIC/LINE inputs the MIC/LINE switch should be depressed and the phantom power switch set to the (OFF) position. Some wireless microphone receivers have a mic level output, therefore the MIC/LINE switch should be in the (MIC) position and the phantom power switch set to the (OFF) position.

3. Rotate the MAIN OUTPUT control fully counter-clockwise.

4. Rotate the L, M, and H TEQ controls to the center position.

5. Turn (ON) the LEVEL-MATIC so that the indicators can be used during the set up procedure. This switch is located on the rear panel of the unit.

6. Turn (OFF) the LAST MIC HOLD feature to insure the gating of the MIC/LINE input channels is working properly. This switch is located on the rear panel of the unit.

7. Set the main MODE switch (not the MODE switch located on each channel) in the AUTO position. This switch is located on the rear panel of the unit.

8. Set the CHANNEL INPUT SENSITIVITY control for each microphone by using normal speech level (conversation level, 60-70 dB) about one foot from the microphone or a calibrated signal source so that the -2.5 dB indicator of the LEVEL-MATIC is activated. Rotate all unused CHANNEL INPUT SENSITIVITY controls fully counter clockwise. A practical assessment of proper CHANNEL INPUT SENSITIVITY control settings can be made by monitoring the Status LED activity. Constant flickering of the Status LEDs without talker activity indicates that the CHANNEL INPUT SENSITIVITY control setting is too high for the background noise condition (decrease CHANNEL INPUT SENSITIVITY). An extremely low CHANNEL INPUT SENSITIVITY control setting could cause discrimination against a weak talker. Note that occasional flickering of status LED's is normal and desirable, unless the room is extremely quiet, such as a recording studio.

9. If a CHANNEL INPUT SENSITIVITY control for a microphone has to be operated in the lower end of the control range, the 20 dB pad should be enabled so the CHANNEL INPUT SENSITIVITY control can operate in the middle to upper range of the control.

10. Turn the LEVEL-MATIC (OFF) and bring up the MAIN OUTPUT control to a few dB below feedback then turn the LEVEL-MATIC (ON), if the LEVEL-MATIC function is desired.

11. The TEQ tone controls can be adjusted by simply listening to the MAIN output with a talker speaking into each microphone. This procedure can also be done by listening to each microphone output separately by connecting the PRE-AMP output of each channel to a headphone amplifier and listening to the channel through a set of headphones. Remember when the L, M, and H controls are increased the gain of the channel is increased, thereby increasing the gain of the system. So, the MAIN OUTPUT control or the INPUT SENSITIVITY controls may need to be readjusted, if the TEQ controls are increased and feedback occurs.

12. The unit can be set for LAST MIC HOLD operation if desired.

13. Connect any line level sources to the AUX 1 and 2 inputs and adjust the levels accordingly into the main mix.

14. When the inputs and the MAIN output have been adjusted along with the switch settings for the AUX 1 and 2 inputs, the AUX 1 and 2 outputs may be adjusted using the AUX OUT LEVEL controls located on the rear panel of the unit. 15. With the mixer configured and all the necessary adjustments made, the remote control may now be interfaced to the REMOTE CONTROL connector, located on the rear panel of the unit, if remote control of the AM-4080/4040 is desired.

16. The STATUS OUT may be connected and tested if the use of this function is desired.

17. If you have successfully made it to this step you should have a properly performing AM-4080/4040 in the system that will continue to perform for years to come!