Meyer Sound M SERIES 10

CHAPTER 1

Figure 1.4 shows a sample three-phase AC distribution system, with the load between loudspeakers distributed among the three phases and all of the loudspeakers connected to common neutral and earth ground points.

Figure 1.4. A sample AC power distribution block diagram

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CAUTION: Continuous voltages higher than 265 volts can damage the unit.

TIP: Since M2D and M2D-Sub loudspeakers do not require a dedicated Neutral, and can

tolerate elevated voltages from ground, they can be connected between line-line terminals in a 120 volts 3-phase Wye system. This results in 208 volts AC betweens lines (nominal) and will therefore draw less current for the same output power compared to operating the loudspeaker from 120 volts AC (line- neutral). Make sure that the voltage remains within the recommend operating window. The ground terminal must always be used for safety and the line-to-ground voltage should never exceed 250 volts AC (typically there will be 120 volts AC from line to ground in the above example).

Power Connector Wiring

The M2D and M2D-Sub loudspeakers require a grounded outlet. It is very important that the system be properly grounded in order to operate safely and properly.

If your M2D or M2D-Sub loudspeaker is fitted with the VEAM multipin connector, see the Meyer Sound document VEAM Cable Wiring Reference (part number 06.033.113) for the wiring conventions and pin-outs for AC, audio, and RMS connections.

Meyer Sound offers two VIMs (VEAM interface module) for simple, all-in-one RMS, audio and power distribution using VEAM multi-conductor cables. As shown in Figure 1.5, the VIM-4 module consists of four VEAM connectors and 8-amp breakers for the M2D loudspeaker; the VIM- 3 consists of three VEAM connectors and 10-amp breakers for the higher-current M2D-Sub loudspeaker. Both modules feature a single-phase IEC309 32-amp rear connector.

Figure 1.5. VIM-3 (top) and VIM-4 (bottom) modules

Use the AC cable wiring diagram below (Figure 1.6) to create international or special-purpose power connectors:

Figure 1.6. AC cable color code

If the colors referred to in the diagrams don’t correspond to the terminals in your plug, use the following guidelines:

Connect the blue wire to the terminal marked with an N or colored black.

Connect the brown wire to the terminal marked with an L or colored red.

Connect the green and yellow wire to the terminal marked with an E or colored green or green and yellow.

The M2D and M2D-Sub loudspeakers use different amplifiers to accommodate power requirements for their drivers, hence they have different voltage and current requirements. The M2D uses a UX-M2D amplifier while the M2D-Sub uses an HP-2/M2D-Sub amplifier.