Meyer-sound CQ-2 User Manual

Patents PendingThe CQ™ Series self-powered loudspeakers containindependent amplifier and control electronics for one15” bass-reflex cone driver and on

10Verifying PolarityIncorrect driver polarity impairs system performanceand may damage the drivers. All Meyer Soundloudspeakers are shipped with the d

11Coverage Angles andPolar PlotsCoverage AnglesThe coverage angles for the CQ Series over a widefrequency range are summarized in the following table:

12CQ-1: 125 HzCQ-1: 250 HzCQ-1: 1 kHzCQ-1: 500 HzCQ-1: 4 kHzCQ-1: 2 kHzCQ-1: 8 kHz CQ-1: 16 kHzverticalverticalverticalCQ-1 Polar PlotsInner plot is v

13CQ-2: 4 kHzCQ-2: 2 kHzCQ-2: 125 HzCQ-2: 1 kHzCQ-2: 500 HzCQ-2: 250 HzCQ-2: 8 kHz CQ-2: 16 kHzverticalverticalverticalCQ-2 Polar PlotsInner plot is v

14Array DesignCreating an effective array with the CQ requires aprecise understanding of how to combine the coveragearea and SPL of the individual spe

15• To reduce the risk of electric shock, disconnect the loud-speaker from the AC mains before installing audio cable.Reconnect the power cord only af

16Complementary power MOSFET output stages class AB/H1240 Watts (620 Watts/channel)< .02 %AcousticalCopyright © 1997 Meyer Sound Laboratories, Inc.

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3Controls and Connectors ... 3Dimensions ... 3AC Power ...

4AC PowerThe AC voltage operating ranges for the CQ Series are85–134 V and 165–264 V, at 50 or 60 Hz. The CQ Seriesperforms surge suppression for high

5Safety IssuesPay close attention to these important electrical andsafety issues.Use a power cord adapter to drive the CQ from astandard 3-prong outle

6Limiting and ProtectionCircuitryTruPower Limiting™ SystemConventional limiters assume that the resistance of aspeaker remains constant and set the li

7Fans and Cooling SystemThe CQ uses a forced-air cooling system with two fansto prevent the amplifiers from overheating. A variable-speed primary fan

8Complete SystemsSpeaker Placement and PolarityThe cabinets in the following example configurationsare in a close-proximity coplanar orientation, unle

9LD-1A with CQ and 650-PActivating the Lo Cut filter on the LD-1A for the Mid-Hioutput also eliminates the low frequency rise causedby the overlap bet