Maxxsonics MLX-100 Manual Do Utilizador

This application illustrates the method of linking 4 Mono amplifiers to 2 subwoofers. 

1. Connect the full range RCA outputs from the headunit to the MLX-100 inputs.

2. Connect the RCA’s from the MLX-100 (A+ and A-) BRIDGING OUTPUTS to amplifiers 3 & 4 INPUTS as shown. Repeat this process for amplifiers 1 & 2 through B+ and -.

3. The amplifier settings need to be adjusted as follows:
   - The LOW PASS FILTER should be turned towards the highest frequency. (EXAMPLE: LOW PASS range = 35Hz to 250Hz, adjust to 250Hz)
   - The SUBSONIC FILTER should be turned towards the lowest frequency. (EXAMPLE: SUBSONIC range = 15Hz to 35Hz, adjust to 35Hz)
   - The PHASE should be at 0.
   - The BASS BOOST/BASS EQ should be at 0dB.
   - The LEVEL(gain) control should be turned to the 12 o’clock.

4.  The INPUT LEVEL control on the MLX-100 should be set to match the output signal voltage from your headunit.

5. The MLX-100 LOW PASS FILTER, SUBSONIC FILTER and PARAMETRIC BASS EQ settings should be adjusted for desired listening.

6. The MODE switch should be in the MASTER position.

7. The OUTPUT LEVEL should be at 1Volt.

At this point you are ready to balance the speaker output from your amplifiers. For this procedure you will need a Digital Voltmeter.
- Switch the MLX-100 TEST TONE switch to the ON position.
- Adjust your Voltmeter so that it is measuring Volts AC.
- Connect the positive Voltmeter lead to the (+)POSITIVE SPEAKER TERMINAL on amplifier #1. 
- Connect the negative Voltmeter lead to the (-)NEGATIVE SPEAKER TERMINAL on amplifier #1. 
- Turn the audio system on, turn the volume all the way down, and ensure that there is no audio CD in your CD player.
- Start off with the input LEVEL(gain) settings of the 4 amplifiers at top dead center, or the 12 o’clock position.
- While measuring the Voltage AC on amplifier #1, continue adjusting the headunit until you measure anywhere from 4-6 Volts. At that point, write down the 
voltage on a piece of paper. 
- Connect the voltmeter to the speaker terminals of amplifier #2, then #3 and finally #4.
- Now adjust the input gain control of amplifiers #2 through #4 for the same voltmeter reading as you had noted down from amplifier #1.

8. Once the amplifiers have matching output voltages, you should turn the 65Hz TEST TONE to the OFF position.

9. Connect the speaker + terminal from subwoofer #1 to the POSITIVE SPEAKER TERMINAL of  amplifier #1.
    Connect the speaker - terminal from subwoofer #1 to the POSITIVE SPEAKER TERMINAL of  amplifier #2.
    Connect a wire link between the NEGATIVE SPEAKER TERMINALS of the two amplifiers.
-Repeat this process for subwoofer #2 and amplifiers #3 and #4.

10. Use the OUTPUT LEVEL  adjustment to obtain the desired audio level.

11. The steps outlined in #8 may have to be repeated if you cannot get full power out of the amplifiers, in which case, start off with their input gain controls set for higher gain.