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A-9
MLS 304 Series, MLS 406 Series • Reference Material
PRELIMINARY
MLS 304SA audio block diagram
INPUT SELECT
(LEFT CHANNEL)
INPUT SELECT
(RIGHT CH ANNEL)
MUX
+4
+4
-10
-10
MUX
+4
+4
-10
-10
+ -
+
-
+ -
+10dB@
100Hz/10kHz
+/-10dB@
100Hz/10kHz
LEFT
LEFT
LEFT
LEFT
CTRL
CTRL
RIGHT
RIGHT
RIGHT
RIGHT
LOUDNESS
LOUDNESS
BASS & TREBLE
VOLUME
AUX/MIX
(Balance/Unbalance)
BASS & TREBLE
LINEOUT
VOLUME
CONTROL
SETUP MODE
USER MODE
MAX/
CLIP
MID/
NORM
MIN/
SIGNAL
+V
RED
GREEN
GREEN
LED
MODE
SWITCH
VOLUME
POSITION
CTRL
Gain/Attenuation:
-42dB to +24dB
Configurable output levels
-10dBV unbalanced
or
+4dBV balanced
LEFT CHN
+
AUX/MIX
LEFT
AUX
CTRL
CTRL
CTRL
1
2
3
4
1
2
3
4
MONO
RIGHT CHN
+
AUX/MIX
LEFT
AUX
RIGHT
AUX
User Mode: Volume Level Indicator
Set Up Mode: Input Level Indicator
RIGHT
AUX
Audio Block Diagram for MLS 304SA.eps
SWITCHABLE INPUTS
Gain/Attenuation:
-42dB to +24dB
MUX
+4
-10
MUX
+4
-10
+ -
+
-
PREAMP
LEFT CHN
+
AUX/MIX
RIGHT CHN
+
AUX/MIX
4 / 8 ohm
POWER
LIMITER
CIRCUIT
STEREO (DEFAULT)
OR DUAL MONO OUTPUT
+
-
FILTER
FILTER
+
-
FILTER
FILTER
LEFT OR MONO
RIGHT OR MONO
Note: Output terminal should not be
bridged or shorted.
POWER AMP
DIRECT (4 ohm) - 12 WATTS PER CHANNEL
(continuous)
DIRECT (8 ohm) - 8 WATTS PER CHANNEL
(continuous)
LEFT
RIGHT
MUX
MUX
MONO
MONO
CTRL
STEREO
OR
MONO