Channel amplifier na180.2, 2 channel full range stereo, Bridged for subwoofer application – MB QUART Nautic User Manual
Page 6
2-Channel Amplifier
NA180.2
5
LINE OUTPUT
CH-1
CH-2
LINE INPUT
CH-1
CH-2
LEVEL
6V 0.2V
0dB 9dB
BASS EQ
LOW FLAT HIGH
FILTER
40Hz 250Hz
FREQUENCY
POWER
PROTECTION
FEATURES:
- 1 Set of RCA inputs
- LEVEL: Variable sensitivity from 0.2V to 6V
- BASS EQ: 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 HIGH 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.
- LINE OUTPUT: Full range RCA pass through.
2 Channel Full Range Stereo:
Control checklist:
Interconnect cable checklist:
- Refer to the section “Settings for Best Performance”
- Connect the two inputs of the amplifier to a Radio/CD with quality RCA cables.
Switch setting checklist:
Minimum final loudspeaker impedances:
- 1/2CH X-OVER: FLAT
Bridged for Subwoofer Application:
- Connect the mono speaker positive terminal to the CH1 +, and its negative terminal to CH2 -
Here we show how to use the 2 channel amplifiers to power a subwoofer by taking
as shown.
advantage of the mono bridging capability of all MB Quart amplifiers.
Interconnect cable checklist:
Switch setting checklist:
- A MONO signal source is suggested to bridge channels 1/2, such as would be
- X-OVER: LOW
available from the mono sub bass output of an active crossover, whether standalone, or
Control checklist:
built into a head unit or equalizer. If you only have 1 set of RCA outputs from your
- Refer to the section “Settings for Best Performance”
headunit, you can simply connect those to the inputs for CH1-2 and the amplifier will
Minimum final loudspeaker impedances:
auto sum the signal and provide mono output.
- 2 ohm per channel in stereo mode.
Important: Do not be tempted to connect the hot, or positive outputs, from any source
- 4 ohm mono bridged.
together to obtain a mono signal, as this could very well damage the output stage of
that source.
P
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MONO LINE INPUT
(Unless using procedure
described above)
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40
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