MB QUART NAUTIC NA180.2 Installation Manual page 6

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