Meyer Sound CQ-2 operating instructions AC Power, Power Requirements

AC Power

The AC voltage operating ranges for the CQ Series are 85–134 V and 165–264 V, at 50 or 60 Hz. The CQ Series performs surge suppression for high voltage transients and can safely withstand voltages up to 275 VAC.

Continuous voltages above 275 VAC may damage the unit!

The Intelligent AC power supply protects the drivers and amplifier components when an AC source is applied to the CQ by

•auto-selecting the voltage;

•performing surge suppression and minimizing inrush current;

•filtering EMI.

After three seconds, the main power supply is slowly ramped on. The CQ Series uses a NEMA L6-20P or IEC 309 male power inlet and satisfies UL, CSA, and EC safety standards.

Use the following AC cable wiring diagram to create international or special-purpose power connectors:

blue =	brown = hot
neutral

yellow/green = earth ground (chassis)

AC cable color code

If the colors referred to in the diagram 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 ) or colored green (or green and yellow).

Power Requirements

The CQ presents a dynamic load to the AC mains which causes the amount of current to fluctuate between quiet and loud operating levels. Since different types of cables and circuit breakers heat up at varying rates, it is essential to understand the types of current ratings and how they correspond to circuit breaker and cable specifications.

The maximum continuous RMS current is the maximum RMS current in a period of at least 10 seconds. It is used to calculate the temperature increase in cables, which is used to select cables that conform to electrical code standards. It is also used to select the rating for slow-reacting thermal breakers.

The maximum burst RMS current is the maximum RMS current in a period of approximately 1 second. It is used to select the rating for most magnetic breakers.

The maximum peak current during burst is used to select the rating for fast-reacting magnetic breakers and to calculate the peak voltage drop in long AC cables according to the formula

Vpkdrop = Ipk x Total Cable Resistance

Use the table below as a guide to select cables and circuit breakers with appropriate ratings for your operating voltage.

CQ Series Current Ratings

	115 V	230 V	100 V
Max. Continuous RMS	8 ARMS	4 ARMS	10 ARMS
Max. Burst RMS	15 ARMS	8 ARMS	18 ARMS
Max. Peak During Burst	22 APEAK	11 APEAK	25 APEAK

The minimum electrical service amperage required by a system of CQs is the sum of the maximum continuous RMS current for each speaker. We recommend allowing an additional 30% above the minimum amperage to prevent peak voltage drops at the service entry.

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