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

Page 9

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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

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IN

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IN

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+

-

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-

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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

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4

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6

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3

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3

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BA

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6

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6

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9d

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6

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6

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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.

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