Meyer Sound CQTM Series - Manuals

5 Safety Issues Pay close attention to these important electrical andsafety issues. Use a power cord adapter to drive the CQ from astandard 3-prong outlet (NEMA 5-15R; 125 V max). earth ground chassisground The CQ requires a grounded outlet. Always usea grounding adapter when connecting toungrounded...

6 Limiting and ProtectionCircuitry TruPower Limiting ™ System Conventional limiters assume that the resistance of aspeaker remains constant and set the limiting thresholdby measuring voltage only. This method is inaccuratebecause the speaker’s resistance changes in responseto the frequency content o...

7 Fans and Cooling System The CQ uses a forced-air cooling system with two fansto prevent the amplifiers from overheating. A variable-speed primary fan runs continuously with an inaudibleoperating noise of 22 dBA at 1 m at its slowest speed.The speed of the primary fan begins increasing whenthe temp...

8 Complete Systems Speaker Placement and Polarity The cabinets in the following example configurationsare in a close-proximity coplanar orientation, unlessotherwise stated. Placing the mid-hi speaker morethan 5 feet from the subwoofer may require setting thespeakers to opposite polarities to compens...

9 LD-1A with CQ and 650-P Activating the Lo Cut filter on the LD-1A for the Mid-Hioutput also eliminates the low frequency rise causedby the overlap between the CQ and 650-P. Although atypical CQ : 650-P ratio is 2:1, separate Sub and Mid-Hilevel controls on the LD-1A allow the ratio to varywhile ma...

10 Verifying Polarity Incorrect driver polarity impairs system performanceand may damage the drivers. All Meyer Soundloudspeakers are shipped with the drivers in correctalignment. However, if the driver or circuit wiring hasbeen removed or disassembled in any loudspeaker ina system for any reason, c...

11 Coverage Angles andPolar Plots Coverage Angles The coverage angles for the CQ Series over a widefrequency range are summarized in the following table: s e l g n A e g a r e v o C s e i r e S Q C l a t n o z i r o h 1 l a c i t r e v 2 ) s t n i o p B d 6 – ( 1 - Q C 0 8 ° 0 4 ° ) s t n i o p B d ...

14 Array Design Creating an effective array with the CQ requires aprecise understanding of how to combine the coveragearea and SPL of the individual speaker with those ofadjacent speakers. Array design is a trade-off betweenincreasing on-axis power and creating smooth transitionsbetween the coverage...

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 after making all signalconnections. • Connect the loudspeaker to a two-pole, three wire ground- ing mains receptacle. The receptacle must be connected...

16 Complementary power MOSFET output stages class AB/H 1240 Watts (620 Watts/channel) < .02 % Acoustical Copyright © 1997 Meyer Sound Laboratories, Inc. All rights reserved Part # 05.041.010.01 Rev A ± 4 dB 40 Hz – 18 kHz ± 90 ° 50 Hz – 16 kHz CQ-1 : 136 dB ; CQ-2 : 139 dB > 110 dB Specificati...