20 Most Recent Lanzar MXA282 Car Audio Amplifier Questions & Answers

Double check your connections. Sounds like you are picking up alternator whine. Make sure the rca cable is at least 12" away from power and remote cables when installing fem radio towards amp. Its best to runthem on opposite sides. .A thumbs up would be greatly appreciated if this answer is helpful to you.

Try checking your wiring for bare spots or for possible grounds, Also check your subs to make sure the terminals are not shorting out or that the subs themselves may be going bad or shorting out.

this is because this amp has been overheated and the power supply inside the amp can only go into safe mode. this is whats known as "burned" or severely overheated components inside the amp. this is caused by demanding more power than the amp can handle causing so much heat that the components literally melt and ground themselves out causing an instant short when you connect the amp.

if the red light is the overprotection light more then likely the transitters are bad

The problem is the amplifier is drawing more amperage than the alternator can provide. Install a capacitor in the battery feed line to the amplifier (can be purchased at any car stereo store). Do not go with the cheapest as this is a storage battery and like a battery cheap ones fail quickly.

burnt out internal battery

should be 20amp fuses nothing really higher than that

The purpose of the gain is to match the signal volts RMS coming from the source (CD player, etc.) to the input of the amp for correct power matching and to prevent clipping (damage by over powering).

Here is a guide that will help you set the gain correctly http://www.box.net/shared/uchv4dbk88

You'll need a multi-meter (AC voltmeter, $15 from Radio$hack), Microsoft Excel and a way to burn an audio CD from an MP3 (test tone included).

If you don't have Excel, You can downlaod OpenOffice by Java (SunMicro Systems) for free to read spweadsheets (and you thought spreadsheets were for business).

Set the LPF to just below the highest range of the frequency response of the subs. Meaning if the frequency response of the sub is 20-200Hz, set the LPF to about 180Hz

OR

set the LPF to where the other speakers start off. example, if the speakers start at 150Hz, set the LPF to about 160Hz. This overlap (or crossover - where the term comes from) is the ideal setting.

Set the subsonic (infrasonic) filter to about the same as the lowest setting in the range of the frequency repsonse of the subs. Meaning about 20Hz if that's the lowest in the range (20 -200Hz as above, if applicable).

Don't set the Bass Boost above +2dB (if applicable).

Set the phase to 0 (if applicable).


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2 X 18" Kicker CVR they will work really clean. 2000 watt max each and 1000 RMS just like your amp.

Check in [email protected] good luck

if the protection light is lit disconect the battery and wait 2 mins...if that doesnt work than ur amp is fryed

Depends entirely on the output impedance of the amplifier and of course if it matches your loudspeakers.

Your 8ohm channel is fried why happened was you ran 2 12s in an 8ohm load and turned it down to 2ohms the speakers was pulling all the power and that made it over heat and when it over heated it fried you're amp. It ain't no good you can't fix that

Bad connection inside either on a connection or on the PCB itself.

When an amplifier causes trouble or otherwise stops working, it is necessary to eliminate external possibilities such as a short circuited output. If nothing external is causing the problem, unless you have a good friend who is an electronics engineer, it will be a repair shop task...

Check your fuses. Check to see if any of the wires are loose. Could be a blown fuse or loose wire. Possibly the following link might be of interest: https://www.youtube.com/watch?v=xMbsieEj0UM