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Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
Model M267 User Guide
GENERAL
• All connections phased. Line output terminals phase-in-
dicated
The Shure Model M267 is a microphone mixer-remote am-
• Compact and lightweight, with rugged, abrasion-resis-
plifier specifically designed for professional applications. The
tant case
excellent performance, versatility and features of this com-
plete, compact console make it an ideal choice for studio, re- • Internally se
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Outputs Headphone Output Clipping Level IMPEDANCE 3.16V (+10 dBV) into 200 Designed for Actual Output Tone Oscillator Use With (Internal) Output Clipping Level Microphone Any low imped- 0.5 –34 dB 1,000 Hz, 1.5% or less THD ance microphone (20 mV) input Phantom Power Mix Bus 3.5 k 3.5 k –8 dBV (400 mV) 30 Vdc open-circuit, 3.3 k series resistance, input Head- 8 - 2000 400 +10 dBV switches in MIC position only phones 200 3 k ** (3.3 V) recommended Operating Voltage Line 600
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CONTROLS AND CONNECTORS Input control 1 serves an additional function as the level control for the tone oscillator when the INPUT 1/OCS 1 WARNING switch is in the OSC 1 position. IMPORTANT: For optimum signal-to-noise ratio, the indi- This apparatus must be earthed (grounded)! The vidual input controls should be operated at as high a set- M267 power supply is energized when the unit is ting as possible, consistent with maintaining adequate connected to an ac source; disconnect mains control ra
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Mix Bus The oscillator should be switched off (INPUT 1 position) when not in use. Direct access to the mixing bus is provided through the Phantom Power rear-panel MIX BUS phono pin jack. This provision is made primarily to facilitate stacking or “multing” M267s to The rear-panel PHANTOM OFF/ON switch controls the achieve additional input capacity without losing any in- application of phantom power for condenser micro- puts. With two M267s, for example, the two mixing buses phones, such as the S
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telephone line. If a coupler is required, make certain the 240 Vac, follow these steps: coupler selected and the wiring arrangement are in com- 1. Disconnect the M267 from the ac line. pliance with the telephone company regulations. 2. Remove the end caps and cover. When direct connection to a telephone line is not pos- 3. Locate the voltage selector switch (S201) at the right sible, acoustic coupling to a telephone handset may be rear of the main printed circuit board (Figure 3). Move used.
