Channel amplifiers, Na540.6 – MB QUART Nautic User Manual
Page 9

6-Channel Amplifiers
NA540.6
8
6 Channel Full Range Stereo
1. Interconnect cable checklist:
3. Crossover frequency control checklist:
Connect the 6 Inputs of the amplifier to a Radio/CD with quality RCA cables.
N/A for full range operation.
2. Filter Switch:
4. Line Level:
- 1/2CH: FLAT
Refer to section “Setting up systems after installation for best performance.”
- 3/4CH: FLAT
-5/6CH: FLAT
5 Channel Operation
2. Filter Switch:
This illustration shows how to use your 6 channel amplifier as a 5 channel unit by taking
- 1/2CH: FLAT
advantage of the mono bridging capability on all NAUTIC amplifiers.
- 3/4CH: FLAT
- 5/6CH: LOW
1. Interconnect Cable Checklist:
3. Crossover frequency control checklist:
- 1/2CH & 3/4CH: Connect the Inputs of channel pair ½ to a suitable stereo source
N/A for full range operation. 5/6CH set to 80Hz.
with quality RCA cables. Repeat these steps for 3/4CH.
4. Line Level:
- 5/6CH: Connect a mono line Input via Y-adapter from a mono source or single
Refer to the section “Setting up systems after installation for best performance.”
Left or Right RCA from a stereo source. This has been detailed on previous pages
5.Speaker Connections:
Connect the subwoofer - to Ch6- and the subwoofer + to Ch5+. Connect the remaining
for reference.
speakers in standard stereo wiring to CH1/2 & CH3/4.
IMPORTANT: Do not connect Left and Right stereo signals together to achieve a mono
signal as this will damage the output stage of the source and possibly the input stage of
IMPORTANT: Minimum final loudspeaker impedance presented to the amplifier is
the amplifier therefore voiding your warranty.
4-Ohms in mono operation and 2-Ohms in stereo operation.
P
O
W
E
R
IN
P
U
T
P
O
W
E
R
IN
P
U
T
G
N
D
R
E
M
B
A
T
T
+
12
V
G
N
D
R
E
M
B
A
T
T
+
12
V
6C
H
5C
H
6C
H
5C
H
4
C
H
3C
H
2
C
H
1
C
H
4
C
H
3C
H
2
C
H
1
C
H
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
B
R
ID
G
E
D
B
R
ID
G
E
D
B
R
ID
G
E
D
B
R
ID
G
E
D
B
R
ID
G
E
D
B
R
ID
G
E
D
LINE OUTPUT
DIAGNOSTICS
MODE
POWER
PROTECT
CH-2
CH-1
CH-6
CH-4
CH-5
CH-3
CH-2
CH-1
2-CH
6-CH 4-CH
LINE INPUT
LEVEL
FILTER
FREQUENCY
BASS EQ
6V
.2V
HIGH
LOW FLAT
40Hz
250Hz 0dB
9dB
CHANNELS 1 & 2
CHANNELS 3 & 4
CHANNELS 5 & 6
LEVEL
FILTER
FREQUENCY
BASS EQ
6V
.2V
HIGH
LOW FLAT
40Hz
250Hz 0dB
9dB
6V
.2V
HIGH
LOW FLAT
40Hz
250Hz 0dB
9dB
LIN
E
O
U
TP
U
T
LIN
E
O
U
TP
U
T
D
IA
G
N
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T
IC
S
D
IA
G
N
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IC
S
M
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M
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P
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P
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P
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C
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-2
C
H
-2
C
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-1
C
H
-1
C
H
-6
C
H
-6
C
H
-4
C
H
-4
C
H
-5
C
H
-5
C
H
-3
C
H
-3
C
H
-2
C
H
-2
C
H
-1
C
H
-1
2
-C
H
2
-C
H
6
-C
H
6
-C
H
4
-C
H
4
-C
H
L
IN
E
IN
P
U
T
L
IN
E
IN
P
U
T
LE
V
E
L
LE
V
E
L
FIL
TE
R
FIL
TE
R
FR
E
Q
U
E
N
C
Y
FR
E
Q
U
E
N
C
Y
BA
SS
E
Q
BA
SS
E
Q
6
V
6
V
.2
V
.2
V
H
IG
H
H
IG
H
L
O
W
L
O
W
F
L
A
T
F
L
A
T
40
H
z
40
H
z
25
0H
z
25
0H
z
0
d
B
0
d
B
9
d
B
9
d
B
C
H
A
N
N
E
L
S
1
&
2
C
H
A
N
N
E
L
S
1
&
2
C
H
A
N
N
E
L
S
3
&
4
C
H
A
N
N
E
L
S
3
&
4
C
H
A
N
N
E
L
S
5
&
6
C
H
A
N
N
E
L
S
5
&
6
LE
V
E
L
LE
V
E
L
FIL
TE
R
FIL
TE
R
FR
E
Q
U
E
N
C
Y
FR
E
Q
U
E
N
C
Y
BA
SS
EQ
BA
SS
EQ
6
V
6
V
.2
V
.2
V
H
IG
H
H
IG
H
L
O
W
L
O
W
F
L
A
T
F
L
A
T
40
H
z
40
H
z
25
0H
z
25
0H
z
0d
B
0d
B
9d
B
9d
B
6
V
6
V
.2
V
.2
V
H
IG
H
H
IG
H
L
O
W
L
O
W
F
L
A
T
F
L
A
T
40
H
z
40
H
z
25
0H
z
25
0H
z
0d
B
0d
B
9d
B
9d
B
FEATURES:
- 3 Sets of RCA inputs
- LEVEL: Variable sensitivity from 0.2V to 6V
- BASS BOOST: Adjustable 45Hz bass boost from 0dB to 9dB
- X-OVER: Selects internal crossover functions
- FLAT: Bypasses all crossovers for full frequency operation
- LOW: Selects the built in LOW PASS filter
- HIGH: Selects the built in HI PASS filter
- POWER LED: Indicates the powered up and turned on condition
- PROTECTION LED: Indicates a high voltage, low voltage, short circuit,
hard clip, over heating or DC fault condition.
- MODE: “2” indicates one set of RCA’s are being used. This will also pass signal to channels 3/4 and 5/6 through
1/2 inputs. “4” indicates connecting 2 sets of RCA’s to 1/2 and 3/4 inputs. “6” indicates connecting 3 sets of
RCA’s to channels 1/2, 3/4 and 5/6.