Installation manual

Dolby
®
UEX/650 Upgrade Kit Installation Instructions
6
4 Connections
With the Cat. No. 790 board installed, all surround channels appear at the Option
Card I/O connector on the rear panel of the CP650. You must move the Left
Surround (Ls) and Right Surround (Rs) channel output wiring from the Main Audio
Output connector to this connector. Do not use the Ls and Rs outputs on the main
audio output connector. Additionally, install the wiring for the new Back Surround
channel amplifiers.
The digital audio inputs on the Cat. No. 790 can accept up to four two-channel PCM
(pulse-code modulated) bitstreams. Each bitstream contains the data for two channels
of PCM audio. Sampling rates of up to 48 kHz—with up to 24-bit resolution—are
accommodated. This bitstream format can be found on the digital output connector of
a CD player, DAT recorder, DVD player, or any basic piece of digital audio
equipment.
Make connections by soldering the appropriate wires to the male solder-cup
connector shipped with the upgrade kit.
Note: When wiring to the digital inputs, be sure to ground all unused inputs. Failure
to do so will cause unused channels to show signal, due to crosstalk between
the used digital inputs and the unused digital inputs.
14
14
1 1
25 25 21
13 13
Back
Surround
Right
Back
Surround
Left
Right
Surround
Left
Surround
For unbalanced input amplifier
one channel shown
Signal
Gnd
red
black
red
Signal
Gnd
black
red
black
red
Signal
Gnd
red
black
red
Signal
Gnd
black
red
black
red
Signal
Gnd
black
red
black
red
Signal
Gnd
black
red
black
red
Signal
Gnd
red
black
red
black
black
black
10
11
23
24
3
6
10
11
16
19
23
24
X
Right
Surround
Left
Surround
{
OPTION CARD I/O
MAIN AUDIO OUTPUT
21
7
13
2
1
4
3
2
1
S/PDIF Digital Inputs
FB527F03
Figure 4 CP650 Outputs to Power Amplifiers