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TNA251 amplifier vs TN250/1

Are these the same amps?

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  • mlp1500
    mlp1500 Feb 24, 2012

    Also, any suggestions on a good alternative at around the same price to push my 12inch Terminators?

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Posted on Jan 02, 2017

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albaby6
  • 58 Answers

SOURCE: I have a TN250/1 MTX class D, mono-block amp,

Two things, a problem with the speakers, or the amp is toast. If there is a short is the speaker, wire touching, bad voice coil, the amp will go into protect. I have also seen many, many MTX amps that go bad, and just stay in protect. the easiest way to check, is to unhook the speaker wire from the amp, then power it up, if it still goes into protect without a speaker hooked to it, you have a bad amp. Hope this helps.

Posted on Aug 18, 2009

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SOURCE: What is the HLI port

What is the HLI port on the MTX tna251 amplifier?

Posted on Feb 22, 2012

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1 Answer

Mtx tna251 amp has bass remote that has a light glowing but turn knob up and down and no difference like simply not working no difference in bass? Posible causes,


It is actually in the controller, if you turn the remote all the way down and press on the controller until the bass goes off, you will be able to turn the bass up and down with the remote, mine worked but stopped after a month, I tried adjusting the amp but then I noticed that if I wiggled the knob on the remote that it would work, I mashed mine until it worked again and velcroed it to my console sonibcan get it on and off easily.

Mar 03, 2015 | MTX Car Audio & Video

1 Answer

I bought a mtx terminator amp model no TNA251 600 watt and two subs installed. It works good for few days but now its not cranking up proper bass and sound. It always has three solid red lights everytime....


does it do this all the time when you turn it on? any sound at all?
provide more information, but my guess its that the amp is blown. replace it or sell it for parts.

Nov 11, 2013 | Car Audio & Video

2 Answers

MTX tna251


I have the same sub combo. The problem is the amp is underpowered for the 2 MTX 12s, get a bigger amp and you should be fine.

Nov 13, 2011 | MTX Car Audio & Video

1 Answer

My TNA251 amp is flashing after it turned it's self off it usually turns off when it gets hot and then come right back on but this time it's just flashing I changed fuses even tho they were good


Hi Mr. Stephen,

It seems you use too big speakers PMPO that cause your amplifier easily turning hot after certain time use. I suggest you to change your speakers with lower power.
Your amplifier is damage now if it is never coming back On. Some part(s) damaged on PCB. It could the IC or capacitor(s). Please check and get it fixed.

Regards,

Sep 29, 2011 | Car Audio & Video

1 Answer

What is the HLI port on the MTX tna251 amplifier?


What is the HLI port on the MTX tna251 amplifier?

Jul 15, 2011 | Car Audio & Video

1 Answer

No amps to the amp


is the remote turn on wire run corectly? how are you getting the signal to your amp? RCA cables or speaker wires? what is your amp rating vs. speaker rating?

Jun 20, 2008 | Alpine MRD-M1000 Car Audio Amplifier

1 Answer

How to fix my amer.pro1000watt amp which has a burnt fuse an doesnt put out music


You blew the output transistors. They all need to be replaced. Check this for more info: http://www.techlore.com/article/14696/

Aug 14, 2006 | American Pro VS-2043 Car Audio Amplifier

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