Dolby Laboratories CP500 Specifications Page 52
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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5-15
B-Chain Alignment
5.4 Bypass Crossover Adjustment
NOTE
: In a bi-amplified system, the bypass subsystem must have its own electronic crossover as well, to
avoid damage to the HF horns from low frequency signals.
In order to perform these adjustments, first turn off the CP500 and remove the Cat.
No. 682. Move jumper J900 to the BCAL position. Re-insert the card and turn on
the CP500. Also, set the bypass adjust level jumpers on the Cat. No. 682 to HI and
the Cat. No. 683 to LO. Then, perform the following steps.
B-Chain
Alignment
key
Alignment
key
Format
Selection
Menu
key
FORMATS
Menu
Cancel OK
Exit
screen shows:
press:
Menu
Selection
System
Alignment
screen shows:
screen shows:
press:
press:
B-Chain
Eq
u
l
i
zation
key
B-Chain
Alignment
screen shows:
press:
Center
a
Press the
MENU
key
,
choose
Alignment
(SK2),
and
B-Chain Alignment
(SK1).
Select
B-chain Equalization
(SK1),
Choose the
Center
channel and half
screen mode.
SK6
Press
Bypass
(SK6) to select the bypass
mode.
YES
CROSSOVER
RIGHT
OUTPUT LEVEL
BYPASS
NO
J5
CAT. NO. 682
LOHI
J902
installed
Cat.No. 683
with
LF BALANCE
BYPASS
TP
GND
DS800
DS100
Set the
Bypass
LF Balance
trimpot
on
the
Cat. No. 682
for equal average
levels in octaves just below and just
above the crossover frequency (usually
500 Hz).
- Film-Tech 1
- Model CP500 2
- Model CP500 3
- TABLE OF CONTENTS 4
- 1.1 About the Dolby CP500 10
- 1.3 About This Manual 11
- 1.4 Specifications 12
- 1.5 Regulatory Notices 14
- SECTION 2 16
- EQUIPMENT REQUIRED 16
- TEST FILM 17
- 3.1.2 While playing the film: 18
- 3.2 Mount the CP500 19
- 3.3 Connect the CP500 19
- (Models CP500-D, and -70) 20
- Figure 3 - 2 22
- Figure 3 - 3 22
- 3.4 Check and Set Jumpers 23
- CAT. NO. 683 25
- Appendix B, Cat. No. 683 26
- Model CP500-D 27
- Model CP500-D/300 28
- Model CP500-SR 28
- Model CP500-70 28
- 3.6 Bypass Power Wiring 29
- 3.7 Power On 30
- 4.1 The CP500 Front Panel 32
- 4.2 System Password 35
- 4.3 Aligning the B-Chain 36
- 5.1 Check Theater Equipment 38
- 5.2.2 Screen Channels 39
- B-Chain Alignment 40
- 5.3 Room Equalization 41
- “85 dBC” 44
- Reference 47
- Response 47
- CAT. NO. 682 52
- Cat. No. 682 card 53
- 6.1 Aligning the A-Chain 54
- LAMP VOLTAGE DC ADJUSTMENT 56
- OSCILLOSCOPE TRACES 60
- CAT. NO. 661 61
- P1, Left 62
- 7.1 Mechanical Alignment 66
- 2.7 to 5 volts 67
- Voltage Adjust 68
- 7.6 Optical Alignment 69
- Figure 7- 5 70
- 7.8 Film Threading 71
- 7.9 Cat. No. 673 72
- 7.11 Format Control 72
- Allowable Source Formats 75
- Allowable Target Formats 75
- How It Works 75
- Assigning Source Formats 76
- Assigning Target Formats 77
- Figure 7- 8 78
- 7.13.2 Print Cleanliness 79
- 7.13.3 Adjustments 79
- SECTION 8 80
- FINAL ADJUSTMENTS 80
- 8.2.1 Static 82
- 8.2.2 Dynamic 83
- 8.2.3 Typical Settings 83
- Width (feet) 84
- Width (meters) 84
- 8.4 Bypass Adjustments 85
- Position J900 to 86
- REMEMBER 87
- Format 04 Dolby Stereo 89
- Adjustments 90
- 8.5 About Non-sync 91
- 8.6 Mute Speed Adjustment 92
- Figure 9 - 1 93
- CAT. NO. 689 REMOTE 94
- 9.1.3 Auditorium Fader 95
- 9.2.1 Operation 96
- 9.2.2 Components 98
- 10.1 During the Show 99
- Surround Speakers 101
- Electronic Crossover: 101
- 10.2 Between Shows 102
- WARNING: 104
- 10.3 Troubleshooting Chart 105
- NO SOUND AT ALL 106
- NO SOUND IN SOME 107
- FADER PROBLEMS 108
- CONTROL PROBLEMS 108
- RUMBLES, WHISTLES 109
- HUM etc. IN SOUND 109
- TROUBLE IN ONE OR 110
- MORE CHANNELS 110
- CHANGEOVER AND 113
- CONTROL TROUBLES 113
- APPENDIX A 115
- ADVANCED OPERATIONS 115
- Cancel OK 116
- A.2 Saving System Settings 119
- Saving System Settings 120
- A.2.2 Using Load500 Software 125
- Connect to Load500 127
- Menu Cancel OK 130
- B.1 Description and Features 131
- B.2 Installation 131
- B.3 Alignment 132
- B.4 Special Applications 134
- B.5 Headers Available 135
- B.6 Jumpers and Headers 136
- APPENDIX C 138
- 9. Mic. Input Connector: 140
- System Setup Menu Tree 144
- Signal Block Diagram 144
- Basic Functions 145
- Auxiliary Data Channel 147
- Optical Sound 149
- Magnetic Sound 150
- Dolby Gets Involved 151
- The Next Step: Dolby SR 152
- And Now - Dolby Digital 152
- About Dolby AC-3 153
- Making Films Sound Better 153
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