DOLBY CP65
Stereo Cinema
Processor
Specifications
CONSTRUCTION
Rack-mount chassis frame
construction with plug-in modules accessible behind hinged front panel.
SIGNAL CONNECTIONS
- Standard screw-type terminal blocks for audio signals and
control connections for projector changeover, remote units, etc.
- Solder-tag fanning strip supplied for each terminal block.
- Automation connections via 25-way D-type or screw-type terminal
blocks.
- Power supplied via standard IEC three-pin AC connector.
SIGNAL INPUTS
- Optical: two pairs of balanced inputs for two projectors
with stereo solar cells (available from Dolby Laboratories mounted on brackets
for most projector types).
- Magnetic/Aux: six inputs for use with external magnetic
preamplifier or auxiliary source, internally-selected 100 mV or 1 V operating
level.
- Non sync: two inputs for stereo non sync source. 50 k
input impedance, 200 mV maximum input sensitivity. 2:4 decoder may be used to
generate ambient information for surround speakers with stereo non sync
sources.
- SR D: six inputs for use with Dolby DA10 digital SR D
decoder.
SIGNAL OUTPUTS
22 ohm output impedance will drive any
load greater than 600 Ohms. Maximum output level, +16 dBu. Typical operating
level, -6 dBu. Levels from 10 mV to 1.3 V may be accommodated.
OUTPUT FOR HEARING-IMPAIRED
- Center-weighted sum of L, C, R for connection to auxiliary
system for the hearing-impaired.
- Output impedance 5K.
OPTICAL
PREAMPLIFIER
- Cat. No. 240 stereo preamplifier for two projectors equipped
with stereo solar cells.
- Adjustable sin (x)/x slit-loss equalization circuitry for flat
response from virtually any type of optical sound head.
NOISE
REDUCTION
Two channels
Dolby A-type, two channels Dolby SR.
FOUR
CHANNEL DECODER
- Cat. No. 150E decodes left, center, right and surround channels
from the two tracks on Dolby Stereo optical prints.
- Incorporates modified Dolby B-type noise reduction and
adjustable delay line to optimize front-to-surround separation.
LOUDSPEAKER
EQUALIZATION
- Three Cat. No.64 equalizers for adjustment by trained
installers to achieve standardized response from left, center and right screen
speakers. Each module has ±10 dB high- and low-frequency controls to
make broad adjustments, plus 27 adjustable ±6 dB narrowband filters with
1/3 octave ISO center frequencies from 40 Hz to 16 kHz.
- Cat. No. 441 equalizer provides bass and treble adjustments,
mid frequency parametric equalization for left and right surround channels, and
parametric equalization for subwoofer channel.
REMOTE
FACILITIES
Connections for
one or more remote faders and format switches.
EDGE
CODE
Optional Cat. No. 384
Edge Code Reader may be mounted on backplane for automatic sound format
selection controlled by edge codes on the film.
NOISE
LEVEL*
Typically -70 dB
(CCIR/ARM weighted) referenced to Dolby level.
DISTORTION*
Any channel, 1 kHz : typically less than
0.15% at Dolby Level (50% modulation).
AMBIENT
OPERATING TEMPERATURE
Up to 40 degrees C.
DIMENSIONS
- 4 units high rack mounting: 178 x 483 mm (7" x 19").
- Maximum projection behind mounting surface: 280 mm (11").
- Maximum projection in front of mounting surface: 40 mm (1.6").
WEIGHT
10.1 kgs (22.3 lbs).
POWER
REQUIREMENTS
Switched
100/120/140/ 200/220/240 V AC 50-60 Hz, single phase, 90 W.
FUSE
REQUIREMENTS
- Two slow-blow fuses: 1-1/4", 1.25 A for 100/110/120 volts; 20
mm T630 mA for 200/220/240 volts.
- Spare fuse provided in front panel fuse holder.
OPTIONS
- Cat. No. 123 (master) and Cat. No. 122 (slave) remote faders.
- Cat. No. 384 Edgecode Reader.
- Cat. No. 300 switchable SR/A-type modules substituted for Cat
No. 350 SR-only modules to enable 70 mm playback.
* With fader at 7
(approximately10 dB below maximum), output set for -6 dBu (0.775 V) at Dolby
level, Dolby Stereo A-type selected, equalizers set to flat.
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