MB Quart FX1.400 Manual De Usuario

FEATURES:
- 2 Sets 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
   - FULL: Bypasses all crossovers for full frequency operation
   - LP: Selects the built in LOW PASS filter, variable from 30Hz to 150Hz
   - HP: Selects the built in HIGH PASS filter, variable from 10Hz to 1.2kHz

- 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: “2CH” indicates one set of RCA’s are being used. This will also pass signal to channels 3/4 through 1/2 inputs.
   “4CH” indicates connecting 2 sets of RCA’s to 1/2 and
  3/4 inputs.
- LINE OUTPUT: Full range RCA pass through.

Control checklist:

Interconnect cable checklist:

- Refer to the section “Settings for Best Performance”

- Connect the four inputs of the amplifier to a Radio/CD with quality RCA cables.
Switch setting checklist:

Minimum final loudspeaker impedances:

- 1/2CH X-OVER:  FULL

- 2 ohm per channel.

- 3/4CH X-OVER:  FULL
MODE: “4CH” since 2 sets of RCA’s are connected.

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.
- It is necessary to feed the SAME signal to both left and right inputs via a Y-adapter RCA cable.

Here we show how to use the 4 channel amplifiers as a 3 channel unit by taking 

- Connect the mono speaker positive terminal to the Ch4 +, and its negative terminal to Ch3 - as 

advantage of the mono bridging capability of all MB Quart amplifiers. In order to create 

shown.

a 2 channel system, simply follow the example to also mono bridge channel pair 1/2.
Interconnect cable checklist:

- Connect the inputs of channel pair 1/2 to a suitable stereo source, e.g. a head unit 

- 1/2CH X-OVER:  FULL

with good quality RCA cables.

- 3/4CH X-OVER:  LP

- A MONO signal source is required to bridge channel pair 3/4, such as would be 

available from the mono sub bass output of an active crossover, whether standalone, or 

- Refer to the section “Settings for Best Performance”

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 ch 1/2 and switch the MODE to 

2ch. The amplifier will auto sum the signal and provide mono output for bridged 

channels 3/4.