Question about MA Audio EHO152 15" 5000 Watts Subwoofer Car Speaker

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Amplifiers my amp an ma audio m686i keeps going into protection mode i think its fried how can i fix it the product in the product info is not the product i have my is an ma audio m686i 2 channel competition amplifier

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It sounds like you've got too little impedance on it. How are the speakers wired? Are they in series (one speaker per channel) or are they in parallel (speaker 1 neg wire hooked up to channel 2, and speaker 2 neg wire hooked up to channel 1)? Or do you have a single speaker bridged (pos wire on one channel, neg wire on the other)? Often, an amp going into protection is a result of too much current draw, which happens when you're running a 2-ohm load on an amp that isn't rated to handle that (many are only OK at 4-ohms, which you'd have with series wiring). Let me know how you have the speakers wired and we'll go from there.

Posted on Aug 07, 2008

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I have an amp hooked up in my car.when I tried to connect the two woofers up to amp, the stereo cut off and the deck said protect.now that's all it will do is read protect.Wat do I do?


This is a circuit protection to stop you frying your audio! Could be a short circuit or wired wrong......remove the fault and it should reset! First remove the 2 sub woofers since that was when this happened and test the deck!

May 12, 2015 | Car Speakers & Subwoofers

1 Answer

Kenwood kdc-148 is in protect mode why?


A car audio component like an amplifier (or in this case a headunit) is most likely to go into protection mode when there is a short in one of the speaker outputs-- in other words, if the + and - ends of one of the speaker leads are touching, this can cause damage to the internal amplifier of the unit. Some units will respond by putting the amplifier into "protection" mode, so that it does not damage itself. Check connections on the back of your unit, or take it back to the shop that installed it.

Mar 04, 2011 | Kenwood Car Speakers & Subwoofers

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ED7400 - Edge Car Audio 400w amplifier keeps cutting out the music and going into protective mode.


The most common problem is that the amplifier isn't getting enough power. Try installing a one farad capacitor between the head unit and the amplifier.

Oct 04, 2010 | Car Speakers & Subwoofers

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I have a 1200 watt G-Max sub amplifier and it just went into protect mode


Turn down the volume or power settings on it since its pulling too much power and shutting off for a few sconds to keep from blowing. Depending on the amp and speakers your using dont bridge the channels. If it won't come out of protect mode then unhook everything and just hook power, ground, and remote and wee what happens. If it comes on again and stays on then amp is blown.

Aug 11, 2010 | Jl Audio Car Speakers & Subwoofers

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My amp will go into protection mode when i turn my truck on, it flashes green and beats once,then turnd protection mode on... whats wrong with it??


im not sure what is wrong but i do know if you keep it hooked to subs it will fry them because that happened to my friends jackhammer amp and 2 12" mtx jackhammers

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1 Answer

Wiring hk12x2


Hello jose08042008,

Your sub has dual 2ohm voice coils and can be wired to present a final load to the amplifier of either 1ohm or 4ohms. Unless you have an amp that is stable at 1ohm (not many are), then you will want to use the 4ohm wiring. To wire for 4ohms, jumper the positive terminal of one voice coil to the negative of the other terminal, and connect the remaining positive and negative terminals to your amp. If you know for SURE that your amp is stable at 1ohm, you can connect both positives and both negatives together on the sub and then to the amp. But if the amp 1ohm stable, this will result in overheating, and/or going into "protection" mode, and/or damage to the amp.

Hope this helps.

Jun 13, 2009 | MA Audio HK15X2 Car Subwoofer

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Is there a sequence for a protection mode on my amp


Excuse me I was completely confused here. Well protection is just a feature with amplifiers in order to ensure they wont' burn up if too much power is to them or if they are incorrectly wired. If the amp is going into protection there is a problem. More than likely you have the subwoofers wired up incorrectly. You have to wire them up correctly in the box before you hook them up to the amp.. If you leave them incorrectly hooked up for too long the amp will fry then it will go into protection for good. Not cool when your investment is fried because of a silly mistake. Go to www.the12volt.com and look about an eighth of the way down the page in a list there is a menu for subwoofer wiring diagrams.

May 10, 2009 | Car Speakers & Subwoofers

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My PG Xenon 600 watt amp will not power my subwoofers


hello it sounds like your problem may be in the remote/power wire that goes from the back of your radio deck to the amplifier. the amp should have a wire connection that says remote,p.con, or antenna. and its usually the smallest wire connector located by the power and ground wire. this wire goes to the solid blue wire coming out of the deck. you can conect the wires together any way you want. i usualy shave off a little pice of the wire cover and wrap the wire coming from the amp around the bare wire then cover it in electical tape or cut the blue wire from the deck at a fit length and use a wire nut and put the two cut ends in and also the wire coming from the amp. also make sure the amplifire dose not have power to it just to be safe. wouldent want to fry anything.

There is also the left and right wires(ususaly red and white) that go on the back of the deck to the amp.

also chek the volume on the amplifire

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1 Answer

Im not sure how to hook these speakers up


answer depends on what kind of Ohm Load your amplifier is capable of as a lowest allowed setting. ie if you have a 1400W at 4 Ohm amplifier, the connection would need to be different than a 1400W at 2 ohm amplifier. also, on the speaker what is the rated ohm load per coil since it's a quad coil speaker (should say somewhere on it's box, or in it's manual. I'd assume 4 ohm per coil) we'll do that math after you get those figures in to me.

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