I have a infinity Entra sub 150watts 10 inch. it

Best to start at the beginning. You have it connected properly? Are you using the line level, direct or speaker inputs? What output on your receiver are you using?
Have you adjusted the volume control?
If you have everything correct, are you the original owner? It's an older model so if you are the original owner what happened when it stopped working? Noises, fade out, just wouldn't turn on one day.

Are you capable of doing some minor electrical work? Can you read a schematic? Can you recognise electrical parts? If the answer to any of these last three questions is no, you need to take it to someone that has the ability to do electrical repairs. If the answer to all three is yes you can fix this yourself.

kappas are 2ohm. You are running that amp at 2ohms stereo on front and rear channels. That is a nice amp, but it is a thirsty one. If you have a sub amp as well, then you are not supplying your amps with enough power. drop down to 0 gauge and see if it heats up anymore. Also, try going high pass if you have subs. If you don't have subs. You need to run 4 gauge and make sure you have a great ground.

I’m happy to help further over the phone at https://www.6ya.com/expert/chris_7f7f91eb941fb23f

You are drawing to much power to the amp. I assume that there is no dedicated power fron the battery to the amp. If there is you should look into a capacitor

The amp may no thav eenough to push these subs, these are top of the line subs, they probably require a bigger amp, if you are running other speakers through this also, you certainly need another amp, or a bigger one with more channels. also double check all your wiring.

Please read the article here and also your owner manual:
http://lcdrepair.us/E228WFPc-inverter-power.html

At my home, I got more bass when it is in the corner of the room.

sounds like ur gains are set to high and is going into protect mode

also what ive seen happen before is the speakers (if mounted in metal shelf or door and arnt bolted down correctly can flex under bass notes and flex the speaker that much the termanls short onto the metal and amp hits protect mode
(rare but worth a look if you think u have elimanted most other things Had a dude come to me when i was working in sydney with this problem )

also could be things like clipping protection , overheat protection ,amp drawing to much current from the alternator

do your lights dim when you hit the bass notes ?

get back to me and im sure we could solve this problem

Tapping into front or rear gets high level signal 3 plus volts at low impedance which is totally unsuitable for the sub's line level input which is more like 300millivolts > A competent tech could make up an attenuator patch or just take it to a professional car installer before you do more damage
ataraxia

there is a wire crossed somewhere in the system or the sub is damaged how old is the amp

uhhh....try you change your wire setup

your amp try to protect itself from damage when he feels some trouble from your sub.-start by changing sub cabel and sub itself if it does not becomes ok.
if all above failed---you have serious problem in sub output stage and can be fixed in service center.