My ma audio 1800 watt mono block high current amp digital voltage meter not working

Use an oversized AWG cord, e.g. #12, #10 AWG to avoid voltage drop in the cord. I guess each unit needs 5 amps for total of 10 amps when both run at once.
With a 14 Gage cord (0.5 ohm @ 200' wire) and with both units starting up at same time, the current (amps) draw is 60 amps (6x running current) and 1800 watts, the 1800 watts consumed by the cord, this power dissipated as heat. The 1800 divided by the 60 ( watts/amps = volts) years a voltage drop of 30 volts, at start up of the two compressor motors if at 5 amps flc (full load current). This scenario with a 14 gage, 100' cord is problem bound so a thicker wire cord is needed to keep voltage drops within 10% of the load's rated voltage. Use a 10 or 12 Gage cord or two separate cords.

it puts out 600 clean watts per channel, rms @ 4 ohm, and up to 2000 dirty watts bridged mono.. lt listed for over $800, but is realistiocally worth around $300, currently.
DIGITAL AUDIO Amplifiers

need more info,what ohm load are spkrs? are they single voice coil or dual? if dual what ohm dual 2 or dual 4? what amp are you planning to use? stereo amp or mono block? if mono block what make and model? what style box are you using,sealed or ported?

If you need further help, I’m available over the phone at https://www.6ya.com/expert/stephen_fa62cb6d50fe05e8

Hi mate very nice amp you got there here is the specs for it



Model: MA Audio HK401SX
Hard Kore Series 1800 Watt 1 Channel High Performance Class X Car Amplifier
1 x 1800W RMS @ 0.5 Ohm Mono
1 x 1200W RMS @ 1 Ohm Mono
1 x 650W RMS @ 2 Ohm Mono
1 x 500W RMS @ 4 Ohm Mono
Fully Unregulated MOSFET Power Supply
2 Ohm Stable @ Mono
1 Ohm Stable @ Mono
0.5 Ohm Stable @ Mono

if you have 2 12s just bridge them and you will have 650wrms at 2ohm running to them or one sub at 4 ohm 500w rms ps they should pump iam running 2 12s with just 360rms at 2ohm and they do the job good luck

I would check ebay i know i bought one from there before. Hope this helps

well first check ur wireing next the amp is turned down or just bad amp let me no if that helps

Turn the system off and disconnect the speakers. Turn the system on. If the amp still goes into protection mode with no speakers connected, then most likely the output transistors are bad. If the protection light is off, hook up one sub at a time until you find the one that is causing the problem

well it is getting hot due to the amp drawing and pushing alot of current. try getting lower gage wiring for power to the amp and lower gage speaker wire.

If what you're telling me is correct you're trying to drive a stereo sub -woofer with a mono amplifier. If so, that could be a bad situation for the amp, if the voice coils are not wired together correctly. Before we go too far, I have some questions I need answered.
1. Is the MA unit an M1889i?
2. Do you have the 4 terminals of sub-woofer tied together. For example the 2 positive terminals are tied together & the 2 negative terminals are tied together?
3.How do you supply 12VDC to the amp?

While I'm waiting to hear back from you, I'll try to draw a schematic (wiring diagram) of the way it should be wired for your particular setup that I'll send to you.

Hi yeahonda,

 

Your Kicker L7 Ohms may be too low for the MA Audio Mono block amp. The MA Audio Amp is probably 2 Ohm Stable. The kicker will either be 2 ohm or 4 ohm Dual voice coil.   To eliminate the low ohms as a possible threat to causing the map to go into Protect, Wire the kicker Voice Coils in Series.  This adds the ohms, so that you either have 4 or 8 ohms. 

I am using the following codes to show wiring. VC1+ stands for the Kicker  Subs Voice Coil #1 Postive post. AO+ is the MA audio Amp output positive.

 

AO+ to VC1+

VC1- to VC2+

VC2- to AO-

 

This shopuld give you 4 or 8 ohm depending on the 15" L7 setup.  Crutchfield does not carry the Kicker  L7 in 15" They do  have the L5 in 15".

 

If you know how to read a Volt Ohm Meter, set it to OHMs 20 and measure across VC1+ to VC1- and you should see between 1.5 and 5 ohms..  Do the Same with VC2+ to VC2-.  you should see the same voltage. Also read from the Voice coil metal housing to VC1+ , VC1-, VC2+, and VC2-. and you should not read any ohmage to the case. The meter should say OL, or -1.

Good luck.