i ran one of those immortal 12s a while ago and it was loud in my trunk car, but nothing compared to my DD 9917.
You think stuff like that is loud and say it must be hitting 140s, 150s. But you honestly probably have no idea how loud 140 is, much less 150.
Something to outbeat 2 Immortal 15s would be an 18 RE MT, DD 9917, 18 Fi BTL, 2 15" Type Rs.... the list is rather long and goes on and on. This assumes you power these subs appropriately. But yeah, those immortals can get loud, but they also have little sound quality.
Conclusion:
As far as getting loud goes - Many subs > audiobahn immortals
You think stuff like that is loud and say it must be hitting 140s, 150s. But you honestly probably have no idea how loud 140 is, much less 150.
Something to outbeat 2 Immortal 15s would be an 18 RE MT, DD 9917, 18 Fi BTL, 2 15" Type Rs.... the list is rather long and goes on and on. This assumes you power these subs appropriately. But yeah, those immortals can get loud, but they also have little sound quality.
Conclusion:
As far as getting loud goes - Many subs > audiobahn immortals
