Shure M367 AC Operation, Battery Operation, Battery Life, Setting Levels, DIP Switches

AC OPERATION

Use the supplied power adapter to connect the M367 to a power outlet.

M367: 100-120 VAC, 50/60 Hz

M367E: 220-240 VAC, 50/60 Hz

The operating voltage can be switched internally (see Internal Modifiable Functions).

NOTE

Appliance inlet is the main disconnect device (to power off the

M367, you must unplug the power supply).

BATTERY OPERATION

Open the battery compartment by grasping the sides of the compartment, squeezing to release the locks, and pulling the com- partment outward. Insert two 9-volt batteries.

During battery operation, use the BATT CHECK button. Press and hold to show battery level on the VU meter. Press once to illu- minate the VU switch for 10 seconds, or set DIP switch 6 for con- tinuous illumination (see DIP Switches).

BATTERY LIFE

With two fresh 9-volt alkaline batteries, the M367 operates for about eight hours. Some mixer features decrease battery life, as il- lustrated in the following table.

NOTE

Momentary use of headphones or meter illumination will not appreciably affect battery life.

Mixer Operation	Battery	Battery
	Current	Life
	(mA)	(hours)*
No Signal	40	9
With +4 dBm continuous output	45	8
With six mics at 12 V phantom power	55	6.5
With six mics at 48 V phantom power	70	5
With output to headphones	50	7
With meter illumination continuously on	75	4.5

*until Power LED begins to flash, allowing approximately 30 minutes to replace batteries.

CONNECTING M367 OUTPUTS TO TELEPHONE LINES

Use the XLR outputs at line level to drive dc-biased, "dialed up" telephone lines. A slight increase in distortion may occur. Use the M367 limiter with the limiter threshold set to +4 dBm. Modify the M367 output impedance to 600 Ω for proper fidelity (see Internal Modifiable Functions). When connecting the M367 to a telephone line, you must use an FCC-Registered interface adapter between the mixer and telephone line.

SETTING LEVELS

1.Set the MASTER gain knob to the full off position.

2.Activate the 1 khz tone oscillator by setting the 1 KHZ TONE switch to ON. Adjust the MASTER gain until the VU meter needle indicates "0". Adjust the input levels on the equipment connected to the M367 outputs accordingly. Deactivate the tone by setting the 1 KHZ TONE switch to OFF.

3.Adjust the Input gain controls based on the incoming signal levels. The input PEAK LEDs should flicker red only on loud input peaks.

4.Observe the output on the VU meter and adjust the MASTER gain to obtain the desired levels. try to keep the average levels around "0 VU". The PEAK LED adjacent to the VU meter should illuminate only on loud output peaks.

DIP SWITCHES

1 2 3 4 5 6 7

S701

Access the DIP switches by removing the battery compartment and top cover. Use the following table to set the switches

(Bold = factory setting.)

Switch	Function	Up	Down
1	Meter 0 VU	0 VU = +4 dBm	0 VU = +8 dBm
2	Limiter	See Figure 4
	Threshold
3
4	Program to	Off	On (adds attenu-
	Monitor		ated program signal
			in headphones with
			Pull/Monitor switch
			on)
5	Monitor In	Normal	High
	Gain
6	VU Lamp (Batt	Timed (Turns off	Toggled (press on,
	Check button)	after 10 seconds)	press off)
7	Phantom	12 Vdc	48 Vdc
	Power

Limiter Threshold

= +16 dBm

= +8 dBm

= +4 dBm

= 0 dBm

23

LIMITER THRESHOLD SETTINGS

FIGURE 4

4