Loading... Please wait...

Add to Wish List

Click the button below to add the TEAM18 to your wish list.


  • Image 1
  • Image 2
  • Image 3
  • Image 4
Your Price:
$704.00 (You save $135.00)
85.00 LBS
Estimated build time of 10-15 business days
Calculated at checkout

Product Description

All US steel machined in house at Fi.

The TEAM Series of Fi subwoofers is designed to meet the needs of the serious competitor and and monster basshead. With a massive 4" voicecoil for increase thermal capacity, we designed the rest of the motor via FEA to optimize the proprietary US steel (machined in house at Fi when your order is placed). Using two ultra-high grade Y38 magnets, a flux flow derived back plate geometry, and a solid pole (with the optional cooling systems), there is plenty of thermal capacity in the TEAM Series.  Our hybrid suspension makes use of multiple spiders of alternating compliance coupled with our special 144 tinsel count leadwire to keep the moving assembly under control at extreme excursion levels.  The reworked surround geometry on the 15" and 18" models optimizes cone area vs excursion yielding the most output vs excursion. The 2014 TEAM Series is designed for competition use and monster daily driving systems requiring high linearity and extreme power handling. From a punishing low end to the subtle nuances in your favorite reference track, the new TEAM Series delivers.


TEAM Series: Currently in 15” and 18”
Dual 1 and Dual 2 Ohm (custom options available)
Extra heavy aluminum basket
Wrap around gasket
Kraft pulp fiber reinforced cone
Single layer wide foam surround
Push terminals
144 tinsel count leads
FEA optimized motor
Ultra Flux density design
4” diameter 4 layer coil
Double stack magnets
Five alternating hybrid 10" spiders
Optional Venturi-cool systerm
Machined in house at Fi
And many other custom options


Fs: 31.7 Hz | 32.1 Hz
Re: 0.75 Ohms/coil | 1.49 Ohms/coil
Qms: 9.91 | 9.79
Qes: .45 | .47
Qts: .43 | .45
Mms: 516g | 503g
Cms: 0.68mm/N | 0.68mm/N
Sd: 1210cm^2 | 1210cm^2
Vas: 95.4 l | 95.4 l
Spl: 90.2dB 1W/1m | 90.1dB 1W/1m
Bl: 19.0 N/A | 26.1 N/A
Xmax: 33mm | 33mm
Rms: 4000W | 4000W
Sealed box: NO | NO
Ported box: 5-8cuft | 5-8cuft
Sub OD: 18.500” | 18.500”
Cut ID: 16.750” | 16.750”
Mounting depth:11.750” | 11.750”
Displacement: 0.26cuft | 0.26cuft

Find Similar Products by Category

Write your own product review

Product Reviews

  1. Best Subs f¡ Audio

    Posted by HeKtor on 8th Jul 2014

    All I have to say best subs on the market, can't beat the price for quality of these subs and I would recommend this to anybody, got my self a pair and there running of 12k great SUBS. FI For the win!!!

  2. amazing woofer!!

    Posted by jacob on 6th May 2014

    They are power hungry subs but there is one problem with them... They are a pain in the butt to mount in a wall(Basshead problems lol) but great product!

  3. OMG pictures do not serve justice on this one!!!

    Posted by Matt Esser on 21st Dec 2013

    Just got one and the sound quality for that price is unbeatable I will be ordering soo much more thank you everyone at FI... Outstanding job!!!! Well worth the 3week wait :)

  4. Team fi ftw

    Posted by Leston on 8th Nov 2013

    I just got 2 team 18' a few days ago and they are some beast can't wait to get them into my dodge magnum

    Thank u again aaa+