MOD 7a STEREO PROCESSOR
8
MATRIX CONFIGURATION
Refer to the diagram on Page 9 for locations of switches
and LEDs mentioned in this section.
The DIP switches labeled CONFIGURATION are used for
setting the various operating modes. Normally, all these
switches are in the UP (off) position.
This configuration sets up the following modes:
Configuration Descriptions
SW1-1 causes the matrix to always be in Music mode. This
mode is optimized for non-matrix-encoded material such
as music CDs. Normally this mode is selected automati-
cally so the switch should be off.
SW1-2 selects between Split or Mono Surrounds.
SW1-3 selects the Soundspread option. This allows a hard-
panned left or right signal to also appear in the left sur-
round or right surround channels. This is normally not
used and is off in cinema applications.
SW1-4 selects between a phantom center channel for Left/
Right/Surround systems or a real center channel for full
Left/Center/Right/Surround systems.
SW1-5 OFF selects the Autobalance function which
automatically corrects for minor level imbalances in the
signals feeding the matrix. (SW1-5 ON defeats
Autobalance.)
SW1-6 selects Front/Surround Mode or Multi-channel
Mode.
SW1-7 causes the matrix to always be in Cinema mode.
Useful when playing a LaserDisk or DVD through the
Music inputs. (Overrides SW1-1)
SW1-8 turns on Pink Noise
Matrix LED Indicators
The STATUS LEDs indicate some of the operating condi-
tions of the matrix. The RUN LED blinks once per second if
the microcontroller is operating properly. If it is not
blinking, then press the RESET pushbutton to restore
proper operation.
The CS LED is on for multiple stage channel mode (either
L/R or L/C/R). The FS led is on for Front/Surround
operation (no left and right channels). The film LED
indicates Cinema Mode and the MUSIC LED is for Music
mode. In the MOD 7, the matrix will switch modes auto-
matically as the format is changed from Music to any Film
format.
The SETUP LED comes on when SW1-8 (Pink Noise Setup
Switch) is on.
Overhead Channel Setup (matrix)
Place SW1-2 ON (down) when using the overhead chan-
nel. This places the surround mode of the matrix in mono
which insures that all derived overhead material appears
in the overhead channel.
CONFIGURATION SWITCH FUNCTIONS
SW1
ON
OFF
1
Force Music Mode
Auto Cinema/Music Mode
2
Mono Surrounds
Split Surrounds
3
Soundspread On
Soundspread Off
4
Phantom Center
Real Center
5
Autobalance Defeat
Autobalance On
6
Front/Surround Mode
Multi-Channel Mode
7
Force Cinema ModeAuto Cinema/Music Mode
8
Pink Noise Setup Mode
Normal Mode
PINK NOISE SWITCH FUNCTION
S
SW2
ON - PINK NOISE
OFF - NORMAL
1
Left Channel
2
Center Channel
3
Right Channel
4
Left Wall Surround Channel
5
Right Wall Surround Channel
6
Subwoofer Channel
Pink Noise Setup
Pink noise is activated by setting SW1-8 ON (down) and
selecting the desired channels on SW2 as shown in the table
below.
Be sure to turn OFF SW1-8 when done using pink
noise.
