Australian Monitor DMA1 - Manual (Page 27)

S P E C I A L F U N C T I O N S
PA G E 2 7 A M I S - D M A 1 I N S TA L L AT I O N & O P E R AT I O N M A N U A L
8.2 Amplifi er Bridging (40W)
The DMA1 has the capability of bridging the outputs of the stereo power
amplifi er to create a 40W bridge-mono confi guration - to power a single
8ohm loudspeaker of greater power capacity.
To enable this operational mode, in addition to wiring the speaker
in a bridged confi guration, it is necessary to set the following parameters
in the confi g.txt fi le:
OMON=1
INVR=1
OMON STEREO / MONO AUDIO OUTPUT SWITCH
OMON 0= STEREO audio output
1= MONO audio output
INVR INVERTED RIGHT CHANNEL AUDIO OUTPUT SWITCH
INVR 0= right audio output channel not inverted (STEREO)
1= right audio output channel inverted (BRIDGE-MONO confi guration)
Panelplayer 20W + 20W STEREO Panelplayer 40W MONO
PRE
IN
PRE
OUT
SPK
OUT
L R L R L R 1 2 3 4 5 6 7 8
LOGIC
INPUTS
12-24
VDC IN
E
ON
PLAY
VOLUME SD/MMC
MEMORY
R E M O T E
CONTROL
Digital Message Announcer
DMA1
PRE
IN
PRE
OUT
SPK
OUT
L R L R L R 1 2 3 4 5 6 7 8
LOGIC
INPUTS
12-24
VDC IN
E
ON
PLAY
VOLUME SD/MMC
MEMORY
R E M O T E
CONTROL
Digital Message Announcer
DMA1
+ +
– –
20W 20W
+
–
40W