I NEED AN ADVICE PLS, Edge

[Dragos AD]

Hello everyone!
So I had on my car a subwoofer and I'm tired and wanted something stronger, so bought an EDB12D2X-E7 12" speaker with 900w RMS power, 2x2 ohm with an EDA1800.1-E8 amp with this specifications: 1x600w 4ohm 1x1200 2ohm 1x1800w 1ohm, 10Hz-500Hz frequency response, also I bought Stinger SSK0 cables, 150 A fuse, 53 mm2 section of signal cable.
I want to connect this things, in 1 ohm configuration with the volume from amp at half but I do not know if the car battery will handle with all consumers..

What options do I have? The battery has 68 Ah and about the alternator I do know nothing..
A capacitor will help the situation? Or maybe to buy a bigger battery..
Someone told me about an auxiliary battery in the trunk but it is expensive and again, I do not know nothing about the alternator, if he can charge both of them..

My car is Passat B8 2016 1.6 bluemotion with start/stop, maybe helps this informations..
I have everything new, just wait for an answer after the beggining process.
I will put 3 photos, I can put more if is neccesary, sorry for my english but is not my language.

Please help.
Thanks!

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[Buck 5,000+ posts]

You're probably going to damage that sub eventually if you hook it up to 1 ohm @ 1800 watts if the sub is only 900w RMS. That's way too much power.

I would recommend a battery over a capacitor. The capacitor still has to be charged to function.

You should be able to look up your cars alternator charging capacity.

 

[Dragos AD]

You're probably going to damage that sub eventually if you hook it up to 1 ohm @ 1800 watts if the sub is only 900w RMS. That's way too much power.

I would recommend a battery over a capacitor. The capacitor still has to be charged to function.

You should be able to look up your cars alternator charging capacity.

Ok, but if I will buy one more speaker, the same like this, can I use both of them with this amp in 2 ohm? I mean in paralel, is will result from both speakers 2 ohms? I do not know if it is possible and do not know hot to tie the cables to obtain 2 ohms independency..
Thank you for answer.

 

[Buck 5,000+ posts]

Ok, but if I will buy one more speaker, the same like this, can I use both of them with this amp in 2 ohm? I mean in paralel, is will result from both speakers 2 ohms? I do not know if it is possible and do not know hot to tie the cables to obtain 2 ohms independency..
Thank you for answer.

You really need a different ohm sub for 1 or 2 of them.