Kicker mx350.4 ユーザーガイド
Operation
Your Kicker MX.4 series amplifier has six rotary controls and three switches on the top panel. Before
turning on the system for the first time, remove the sealed top panel (protects the controls from water
damage) by removing the two phillips screws. See Figure 1. Then turn the six rotary controls on the top
of the amplifier to the full counter-clockwise position.
turning on the system for the first time, remove the sealed top panel (protects the controls from water
damage) by removing the two phillips screws. See Figure 1. Then turn the six rotary controls on the top
of the amplifier to the full counter-clockwise position.
1. CrossoverSwitch The crossover switches on the top panel are for setting the internal crossovers.
In the OFF position the amplifier passes a full-range signal to the speakers. Use the LO position when
connected to a subwoofer. The HI position should be selected when connected to speakers, which you
do not want to receive any sub-bass information. Never change the crossover "OFF/HI/LO" switch
setting with the audio system on!
In the OFF position the amplifier passes a full-range signal to the speakers. Use the LO position when
connected to a subwoofer. The HI position should be selected when connected to speakers, which you
do not want to receive any sub-bass information. Never change the crossover "OFF/HI/LO" switch
setting with the audio system on!
2. InputGainControl The input gain control is not a volume control. It matches the output of the
source unit to the input level of the amplifier. Turn the source unit up to about 3/4 volume (if the source
unit goes to 30, turn it to 25). Next, slowly turn (clockwise) the gain on the amplifier up until you can
hear audible distortion, then turn it down a little. Adjust AMP 1, then proceed to AMP 2.
source unit to the input level of the amplifier. Turn the source unit up to about 3/4 volume (if the source
unit goes to 30, turn it to 25). Next, slowly turn (clockwise) the gain on the amplifier up until you can
hear audible distortion, then turn it down a little. Adjust AMP 1, then proceed to AMP 2.
3. BassBoostControl The bass boost control is designed to give you increased output 0 - 18dB at
40 Hz. The setting for this control is subjective. If you turn it up, you must go back and adjust the input
gain control to avoid clipping the amplifier.
40 Hz. The setting for this control is subjective. If you turn it up, you must go back and adjust the input
gain control to avoid clipping the amplifier.
4. CrossoverControl The setting for this control is subjective; 80Hz is a good place to start.
LED Red, no output? 1) Amplifier is very hot. Thermal protection is engaged. Test for proper impedance at the
speaker terminals with a VOM meter (see the diagrams in this manual for minimum recommended impedance and
multiple speaker wiring suggestions). Also check for adequate airflow around the amplifier. 2) Amplifier shuts down
only while vehicle is running.
speaker terminals with a VOM meter (see the diagrams in this manual for minimum recommended impedance and
multiple speaker wiring suggestions). Also check for adequate airflow around the amplifier. 2) Amplifier shuts down
only while vehicle is running.
Voltage protection circuitry is engaged. Voltage to the amplifier is not within the 9-16
volt operating range. Have the vehicle's charging and electrical system inspected. 3) Amplifier will only play at low
volume levels.
volume levels.
Short circuit protection is engaged. Check for speaker wires shorted to each other or to the vehicle
chassis. Check for damaged speakers, or speaker(s) operating below the minimum recommended impedance.
No output from one channel? 1) Check the balance control on source unit 2) Check the RCA and speaker
output connections for the channel 3) Swap the RCA cable from left to right. If the problem changes sides then you
have a bad RCA cable or source unit problem.
output connections for the channel 3) Swap the RCA cable from left to right. If the problem changes sides then you
have a bad RCA cable or source unit problem.
4) Swap the speaker output wire from left to right. If the problem
changes sides then you have a bad speaker cable, passive crossover network and/or speaker.
Alternator noise-whining sound with engine’s RPM? 1) Check for damaged RCA (or speaker input) cable
2) Check the routing of RCA (or speaker input) cable 3) Check the source unit for proper grounding 4) Check the
gain settings and turn them down if they are set too high.
2) Check the routing of RCA (or speaker input) cable 3) Check the source unit for proper grounding 4) Check the
gain settings and turn them down if they are set too high.
Poor stereo image or reduced bass response? Check system phasing by turning the balance control from left
to right. If there is more bass output when turned to either side, then check your speaker wiring, passive crossover
networks and speaker terminals for proper positive and negative connections. Reverse a speaker connection from
positive to negative on the stereo/subwoofer channel(s); if the bass improves, the speaker was out of phase.
to right. If there is more bass output when turned to either side, then check your speaker wiring, passive crossover
networks and speaker terminals for proper positive and negative connections. Reverse a speaker connection from
positive to negative on the stereo/subwoofer channel(s); if the bass improves, the speaker was out of phase.
Ground-Loop Noise? If you are using only one pair of RCA inputs, connect the RCA cable to the AMP 1 inputs.
No Fader? When using both sets of low-level (RCA) inputs, the fader button must be in the “ON” position.
If you have more questions about the installation or operation of your new KICKER product, see the Authorized
KICKER Dealer where you made your purchase. For more advice on installation, click on the SUPPORT tab on the
Kicker homepage, www.kicker.com. Choose the TECHNICAL SUPPORT tab, choose the subject you are interested in,
and then download or view the corresponding information.
Please E-mail support@kicker.com or call Technical Services (405) 624-8583 for unanswered or specific questions.
KICKER Dealer where you made your purchase. For more advice on installation, click on the SUPPORT tab on the
Kicker homepage, www.kicker.com. Choose the TECHNICAL SUPPORT tab, choose the subject you are interested in,
and then download or view the corresponding information.
Please E-mail support@kicker.com or call Technical Services (405) 624-8583 for unanswered or specific questions.
CAUTION: When jump starting the vehicle, be sure that connections made with jumper cables are correct. Improper
connections can result in blown amplifier fuses as well as the failure of other critical systems in the vehicle.
connections can result in blown amplifier fuses as well as the failure of other critical systems in the vehicle.
Performance
Model
MX350.4
RMS Power in Watts, all channels driven
@14.4V, 4
Ω Stereo ≤1% THD+N
60 x 4
@14.4V, 2
Ω Stereo, ≤1% THD+N
90 x 4
@14.4V, 4
Ω Mono, ≤1% THD+N
175 x 2
Length:
13 1/2” (342mm)
Height:
2 3/8” (60mm)
Width:
10” (254mm)
Frequency Response, ± 0.5 dB:
20 Hz - 20 kHz
Signal-to-Noise Ratio:
>95 dB, a-weighted, re: rated power
Input Sensitivity:
125 mV - 5 V
Electronic Crossover:
Variable HI, LO or OFF (bypass), 50 - 200Hz, 12dB per octave
Bass Boost:
Variable 0 to +18 dB boost @ 40 Hz
MX.4AMPLIFIER
4
5
Model MX350.4
60 x 4 @ 4 ohms, 14.4Vdc, 1% THD, CEA-2006 (Watts)
Signal to Noise Ratio -98 CEA-2006 (ref: 1W, A-weighted)
Signal to Noise Ratio -98 CEA-2006 (ref: 1W, A-weighted)
PERFORMANCE
OPERA
TION
All specifications and performance figures are subject to change. Please visit the www.kicker.com for the most current information.
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Figure 5
Two Kicker Coax Speakers wired
in series to a single channel.
Wiring two Kicker Speakers to a single channel
Modern high performance coaxial and component speakers have a lower DC Resistance than what
used to be available. The Kicker speakers are rated at four ohms and work with any source unit or
amplifier designed to operate at a four ohm load. If you want to use two Kicker coax or component
speakers on each channel of your amplifier wire the speakers in series, as shown in Figure 5. This will
improve the sound quality, lower the total harmonic distortion and lessen the thermal load at the source
unit or amplifier. This may prevent an amplifier from shutting down, due to over-current protection
circuitry.
used to be available. The Kicker speakers are rated at four ohms and work with any source unit or
amplifier designed to operate at a four ohm load. If you want to use two Kicker coax or component
speakers on each channel of your amplifier wire the speakers in series, as shown in Figure 5. This will
improve the sound quality, lower the total harmonic distortion and lessen the thermal load at the source
unit or amplifier. This may prevent an amplifier from shutting down, due to over-current protection
circuitry.
TroubleShooting
If your amplifier does not appear to be working, check the obvious things first such as blown fuses, poor or incorrect
wiring connections, incorrect setting of crossover switch and gain controls, etc. There is one LED on the top of your
Kicker MX series amplifier. When the LED is green this indicates the amplifier is turned on and no trouble exists. If the
LED is red, this indicates that the protection circuitry (SORT) is engaged.
wiring connections, incorrect setting of crossover switch and gain controls, etc. There is one LED on the top of your
Kicker MX series amplifier. When the LED is green this indicates the amplifier is turned on and no trouble exists. If the
LED is red, this indicates that the protection circuitry (SORT) is engaged.
LED Green, no output? With a Volt Ohm Meter (VOM) check the following: 1) +12 volt power terminal (should
read +12V to +16V) 2) Remote turn-on terminal (should read +12V to +16V) 3) Check for reversed power and
ground connections 4) Ground terminal, for proper conductivity.
read +12V to +16V) 2) Remote turn-on terminal (should read +12V to +16V) 3) Check for reversed power and
ground connections 4) Ground terminal, for proper conductivity.
LED Green, no output? Check the following: 1) RCA connections 2) Test speaker outputs with a “known” good
speaker. 3) Substitute source unit with a “known” good source unit. 4) Check for a signal in the RCA cable feeding
the amplifier with the “AC” test position selected on the VOM meter.
speaker. 3) Substitute source unit with a “known” good source unit. 4) Check for a signal in the RCA cable feeding
the amplifier with the “AC” test position selected on the VOM meter.