[Fi btl n2 or AA Mayhem ?]

I ask because I use it daily and i'm think the sp4 is a good variant, but I want to use it ocasionaly with another box for burping, and 4kw with low Sensitivity 86db is not a little power for that sub ?

I have 75A + 100A alternators and I can't put more power because my 1.4 gasoline motor can't load big alternators at 800rpm...that will turn it off.

[Fi btl n2 or AA Mayhem ?]

I'm sure the sp4 is better than n2 or mayhem in daily aplications.

But in spl aplications, n2 may be over SP4 ?

[Fi btl n2 or AA Mayhem ?]

about car: hud: alpine 9831

amplifier: aq 3500.1d

1 stock alt 75A + second alt 100A

1stock bat + 2 deepcycle & 0awg cable

box will tune to 32hz, space 5cf is not a problem.

music: rap / hip hop / dub step; with low hits

It will be used daily, and occasionally in the other box for SPL competitions.

I don't know what choice is better: FI btl n2 fully loaded daily variant or AA Mayhem 15'

Both are the same specs, same reputation.

What choice should I do ?

Or wait a few reviews about FI SP4 speakers ?