What should I do?

[liwaj79 10+ year member]

I was thinking of adding a 3rd fosgate he i would be putting 600 watts at one ohm to them also they will be in a seald box will it be much louder or should i leave it how it is let me know whta u think.

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[<jaylee>]

If your amp is powering your subs with ease or overpowering them I would definitely add another. More air movement is absolutely better.