Crown CTs 4200 Operation Manual Download Page 15

CTs 

Power Amplifiers

page 15

CTs 

Power Amplifiers

Operation Manual

5.2.4 Channel Level Control

The signal level for each input can be attenu ated 

accurately by adjusting the 21-step Level 

Control (see Section 4.3). Figure 5.2 shows the 

amount of attenuation in dB for each detent.
Note: Attenuation per detent varies with 

operat ing mode since gain varies with operating 

mode. Attenuation amounts shown may vary 

±6%.

Detent

4/8 Ohm

70V

100V

0 (full CCW)

68.31

72.90

71.02

1

67.54

72.06

70.26

2

32.23

36.61

34.90

3

25.46

29.74

28.00

4

21.83

25.87

24.22

5

19.23

23.20

21.58

6

17.12

20.94

19.40

7

15.36

19.02

17.53

8

13.76

17.22

15.79

9

12.28

15.53

14.20

10

10.84

13.90

12.62

11

9.51

12.32

11.16

12

8.28

10.87

9.81

13

7.09

9.45

8.45

14

6.30

8.11

7.22

15

4.92

6.70

5.94

16

3.82

5.26

4.63

17

2.62

3.70

3.21

18

1.35

1.90

1.66

19

0.01

0.01

0.01

20 (full CW)

0.00

0.00

0.00

ATTENUATION in dB

Figure 5.2 Level-control Attenuation per Detent in CTs Multichannel Amplifiers

5 Advanced Features  

and Options

Summary of Contents for CTs 4200

Page 1: ...he information provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manual please visit the...

Page 2: ...S S MBOLOS El tri ngulo con el s mbolo de rayo el ctrico es usado para alertar al usuario de el riesgo de un choque el ctrico El tri ngulo con el signo de admiraci n es usado para alertar al usuario d...

Page 3: ...t Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000 4 2 2003 Electrostatic Discharge Immunity Environment E2 Crite...

Page 4: ...Thermal Level Control TLC 14 5 1 2 Fault 14 5 1 3 Fault Isolation Topology FIT 14 5 1 4 35 Hz High Pass Filter 14 5 1 5 AC Under Over Voltage Protection 14 5 1 6 Power Fuse 14 5 1 7 Inrush Limiting 14...

Page 5: ...overloads and internal faults Proven Crown AB B Multi Mode output topology Continuously variable speed fans opti mize cooling efficiency Three Year No Fault Fully Transferable Warranty completely prot...

Page 6: ...the Important Safety Instruc tions found at the beginning of this manual 3 2 InstallYour Amplifier CAUTION Before you begin make sure your amplifier is disconnected from the power source with the pow...

Page 7: ...ew spacing is shown in Figure 3 5 To connect outputs first remove the touch proof cover plate covering the ter minal strip by removing the screw which holds it in place To prevent the possibility of s...

Page 8: ...ction 5 2 2 for more information Typical input and output wiring along with level control and Mode Switch settings are shown in Figure 3 7 Make sure the Mode switch is set to the Dual 70V position INP...

Page 9: ...itch while the amplifier power is on See Section 5 2 2 for more information Typical input and output wiring along with level control and Mode Switch settings are shown in Figure 3 9 Make sure the Mode...

Page 10: ...ed mains frequency requirements indi cated on the amplifier s back panel label If you are unsure of the output voltage of your AC mains please consult your electrician Models Under Voltage Limit Over...

Page 11: ...ch a config uration may result in premature clipping speaker damage or a blown power fuse Remember Crown is not liable for damage that results from overdriving other system compo nents 4 1 Precautions...

Page 12: ...sig nal rises to a level typically considered as the onset of audible clipping The Clip Indicator also will illuminate during Ther mal Level Control TLC or input overload E Thermal Indicator Red LED o...

Page 13: ...C8 module explained in Section 5 3 1 Control Modules N Channel Level Controls One 21 position detented rotary potentiometer per channel ranging from infinity 70 dB to 0 dB attenuation Refer to Section...

Page 14: ...lue Power LED flashes The amplifier will turn back on when the AC line voltage returns to safe operating levels Figure 5 1 provides voltage limits for all amplifier AC voltage con figurations Also the...

Page 15: ...vary 6 Detent 4 8 Ohm 70V 100V 0 full CCW 68 31 72 90 71 02 1 67 54 72 06 70 26 2 32 23 36 61 34 90 3 25 46 29 74 28 00 4 21 83 25 87 24 22 5 19 23 23 20 21 58 6 17 12 20 94 19 40 7 15 36 19 02 17 53...

Page 16: ...to the respective VCA con nector on the VCA MC Refer to the VCA MC Operation Manual for wiring of the single or multiple channel level control Your amplifier may have come with a VCA MC module already...

Page 17: ...the power supply Refer to section 5 1 6 for specific voltage requirements CONDITION Fault indicator is on POSSIBLE REASON The amplifier channel has stopped oper ating Return the unit to an authorized...

Page 18: ...s one by one to determine if one of the loads is shorted 6 Troubleshooting CONDITION Thermal indicator is flashing POSSIBLE REASON The amplifier has become too hot for safe operation Check for loads l...

Page 19: ...ts 8 4 2 1 4 2 1 Constant Voltage full bandwidth power ratings support 100 Hz 20 kHz due to automatic high pass filters Channels Driven 2 4 1 2 1 1 kHz 20 Hz 20 kHz 1 kHz 1 kHz 20 Hz 20 kHz 4 Ohm 260...

Page 20: ...Note Safe with all types of loads Stereo Bridge Mono 4 8 and 25 ohms 70V 8 16 and 50 ohms 100V 4 8 and 25 ohms 70V 8 16 and 50 ohms 100V Voltage Gain at maximum level setting 1 4V sensitivity 4 8 Ohm...

Page 21: ...CTs Power Amplifiers Operation Manual 7 Specifications Figure 7 3 CTs 8200 Typical Frequency Response 1 W Figure 7 4 CTs 8200 Typical Phase Response 1 W Figure 7 5 CTs 8200 Typical Damping Factor vs F...

Page 22: ...Operation Manual CTs Power Amplifiers page 22 Figure 7 6 CTs 8200 Typical Output Impedance vs Frequency Figure 7 7 CTs 8200 Typical Crosstalk vs Frequency 7 Specifications...

Page 23: ...th Power Pink Noise 8 Ohms Ch 200x4 Typical of program material 16 Ohms Bridge 400x2 just at clip 4 Ohms Ch 260x4 8 Ohms Bridge 520x2 70V Ch 220x4 100V Bridge 220x2 1 3rd Power Pink Noise 8 Ohms Ch 20...

Page 24: ...wer Pink Noise 8 Ohms Ch 160x8 Typical of program material 16 Ohms Bridge 320x4 just at clip 4 Ohms Ch 200x8 8 Ohms Bridge 400x4 70V Ch 200x8 100V Bridge 200x4 1 3rd Power Pink Noise 8 Ohms Ch 160x8 T...

Page 25: ...Authorization SRA is required for product being sent to the factory for service Please complete the SRA by going to www crownaudio com support factserv htm If you do not have access to our website cal...

Page 26: ...oduct at our authorized service center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shippi...

Page 27: ...hase price not including inter est insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase War ranty work can only be perform...

Page 28: ...Operation Manual CTs Power Amplifiers page 28 NOTES...

Page 29: ...____________________ E mail address ___________________________________________ Phone include area code ___________________________ Fax __________________________________ MODEL SERIAL PURCHASE DATE e...

Page 30: ...Operation Manual CTs Power Amplifiers page 30 THIS PAGE INTENTIONALLY LEFT BLANK...

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