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4-Channel Amplifiers

FX4.50 / FX4.70 / FX4.100

6

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 1

0Hz 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.

4 Channel Full Range Stereo:

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 

2 or 3 Channel System:

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:

Switch setting 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 

Control checklist:

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 

Minimum final loudspeaker impedances:

headunit, you can simply connect those to the inputs for ch 1/2 and switch the 

MODE

 to 

- 2 ohm per channel in stereo mode.

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

- 4 ohm mono bridged.

channels 3/4. 

POWER INPUT

GND      REM   BA

TT+12V

  Ch4                          Ch3

  Ch2                          Ch1

-          +          -          +           -          +          -          +

BRIDGED

BRIDGED

FUSE

STEREO LINE INPUT

MONO LINE INPUT

INPUT MODE                           X-OVER                           HIGH PASS                             LEVEL

LP/BP   HP       FULL               30Hz            150Hz                0dB             9dB                 10Hz           1.2kHz              6V                0.2V

OUTPUT                                X-OVER                              LOW PASS                            BASS EQ                           HIGH PASS                            LEVEL                                          INPUT

4CH           2CH          DUPE 3/4    HP      FULL             10Hz           1.2kHz              6V               0.2V

Ch1                Ch3

Ch2                Ch4

Ch 1&2

Ch 3&4

POWER

PROTECTION

INPUT MODE                           X-OVER                           HIGH P

ASS                             LEVEL

LP/BP

   HP

       FULL

               30Hz            150Hz                0dB             9dB                 10Hz           1.2kHz              6V  

              0.2V

OUTPUT                                X-OVER                              LOW P

ASS                            BASS EQ                           HIGH P

ASS                            LEVEL

                                          INPUT

4CH           2CH       DUPE 3/4      HP

      FULL

             10Hz           1.2kHz              6V               0.2V

Ch1                Ch3

Ch2                Ch4

POWER

PROTECTION

POWER INPUT

GND      REM   BA

TT+12V

  Ch4                          Ch3

  Ch2                          Ch1

-          +          -          +           -          +          -          +

BRIDGED

BRIDGED

FUSE

INPUT MODE                           X-OVER                           HIGH P

ASS                             LEVEL

LP/BP

   HP

       FULL

               30Hz            150Hz                0dB             9dB                 10Hz           1.2kHz              6V  

              0.2V

OUTPUT                                X-OVER                              LOW P

ASS                            BASS EQ                           HIGH P

ASS                            LEVEL

                                          INPUT

4CH           2CH       DUPE 3/4      HP

      FULL

             10Hz           1.2kHz              6V               0.2V

Ch1                Ch3

Ch2                Ch4

POWER

PROTECTION

Содержание FORMULA FX1.400

Страница 1: ...interference in the audio system It is highly recommended that the amplifier be mounted to a board of MDF or other solid structure using the 4 mounting screws provided Avoid mounting the amplifier to metal as this can introduce noise and other unwanted issues When mounting the amplifier ensure that it is mounted HORIZONTALLY as shown in the diagram above for optimal heat dissipation Mounting ampli...

Страница 2: ...s FX1 400 FX1 600 D Class Mono Amplifiers TECHNICAL DATA INSTALLATION INSTRUCTIONS General Instructions Settings for Best Performance 1 WARRANTY 1 FOR EXTENDED WARRANTY INFORMATION PLEASE VISIT WWW MAXXWARRANTY COM Check out our videos of new products events and technical tutorials at www youtube com maxxsonicsusainc ...

Страница 3: ...t spring washer and nut to securely fasten the ground lug Use petroleum jelly to coat the bolt lug connection to prevent oxidization with time TIP Use the same approach when installing head units equalizers or any audio equipment for that matter run short individual grounds from each piece directly to the vehicle chassis to minimize ground loops and system noise All power ground and speaker connec...

Страница 4: ... off for your system reproduction The point that you set it at cuts off any frequencies from reproduction beyond this point The 12 o clock position is a great starting point EXAMPLE If you adjust the High Pass to 100Hz the amplifier will not play frequencies below 100Hz but will play frequencies from 100Hz to the highest frequency the amplifier is capable of reproducing When in Low Pass Bandpass o...

Страница 5: ...hiclechassiswillcausethemainfusetoblow Systemdoesnotturnon 1 Checkallfuses 2 Checkallconnections 3 Measure the 12 volt and remote turn on voltages at the amplifier terminals If these are non existent or low take voltage measurements at fuse holders distribution blocks theheadunit s 12voltandremoteleadstolocalizetheproblem Noiseproblems Systemnoisecanbedividedintotwocategories hiss andelectricalint...

Страница 6: ...the RIGHT and its negative terminal to LEFT as shown Here we show how to use the 2 channel amplifiers as a 1 channel unit by taking advantage of the mono bridging capability of all MB Quart amplifiers Switch setting checklist Interconnect cable checklist X OVER LP BP A MONO signal source is required to bridge channels 1 2 such as would be available from the mono sub bass output of an active crosso...

Страница 7: ...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 Switch setting 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 MON...

Страница 8: ...st 14 gauge speaker wiring The amps have dual speaker terminals simplifyingthehookupofmultiplespeakers Theseampsaremono 1channel amplifiers Minimumfinalloudspeakerimpedance 2 Ohm which have multiple positive and negative connections for ease of wiring The 2 positives Warning Themonoampsare4 2 Ohmstableonly arethesameinternallyandthe2negativesarethesameinternally Theyarenot1 Ohmstable POWER INPUT G...

Страница 9: ......

Страница 10: ...es and activates the MX 2 As an option the module also offers a remote turn on wire Remote Output Driver circuit to turn on amplifier when module activates MX 3 Bass Controller Parametric Bass EQ Provides a wide array of subwoofer output signal shaping controls to enhance bass response and sound quality including Bass Boost adjustable Bandwidth wide and narrow Low Pass and Subsonic Filter Accepts ...

Страница 11: ...FX2 60 FX4 50 FX4 70 FX4 100 FX1 400 FX1 600 PART S111 Check out our videos of new products events and technical tutorials at www youtube com maxxsonicsusainc ...

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