Subwoofer Review: Fi SP4 v2

Handles Rated power Easily(3,500 Watts RMS)
Custom Built in USA
Amazing Cooling for Coils
4-Inch Coil
4th Order Friendly
Low-End Monster(Loves Lows)
Better Cooling than v1
Long Wait Time(5-6 weeks)
Expensive $$$
Not NEO Magnet, but a lot think it is
——-Feel free to comment and ask questions!
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Tater T.V. says:

Thanks for the update and review on the subs!!!Great video for people who are thinking about getting em!!!

Southsidehz says:

Good subs handles lows with control not forced sounds clean. My only problem was took 4-5 months if I remember right to get. It is all hand built

DaLifeofJcheeks says:

Stuck between the btl neo, sp4, and team. Only going to run one 15 on 3500 to 4K. Look for more low end but still be a beast all around. Which would you recommend

Subwoofer King says:

Nice review! Have you’ve ever tried to build an 8th other?

michael barrett says:

Which would you recommend fi team or sp4 on 5k for a daily demo build?

James Falvey says:

Can’t get past the single slug

adem sandlur says:

For a 6th order all you had to do was increase rear chamber size to 3 cubes per sub, front chamber could stay the same and you’d still be louder than a 4th and have more bandwidth

James Falvey says:


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