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Comparable to the older Q series drivers. Great SQ (especially with full cool/IND options. standard 2 spider, but can be made with 3. 1750W. Works in sealed, ported, 4th and 6th order SQ oriented daily applications. 12″, 15″, and 18″ sizes.


All Neo3.X:

New cooling and inductance features that are set up in stages.  The first stage is a machined aluminum pole sleeve.  This provides better heat wicking and is the first portion of inductance linearizing and reduction.  The second stage is a combination of the pole sleeve and an amluminum domed compression cap.  This increases the compression ratio for cooling as well as adds some outstroke inductance reduction.  The third stage utilizes the pole sleeve, the compression cap, and a thick aluminum finned extrustion that again lowers and linearizes inductance as well as aids in thermal dissipation.  With the third stage we have reduced inductance by almost a factor of 3 over utilizing none of the aluminum.

All leads are stitched in the same pattern and use the bolted terminal block as the original hybrid design.  But we have added push terminals that use this same setup with the ability to handle much larger wire and completely removing the multiple solder and crimp points that could introduce unwanted resistance.

All Neo3.X subs use the high Xmax dual 1 Ohm and dual 2 Ohm coils for 34mm of one way Xmax.


  • Dual 1 and Dual 2 Ohm

  • Extra heavy aluminum basket

  • Wrap around gasket

  • Kraft pulp fiber reinforced cone

  • Dual layer wide foam surround

  • Standard heavy duty stitched hybrid lead or push/hybrid termination

  • 144 tinsel count leads

  • FEA optimized motor

  • 1750W on up depending on options

  • Open column motor design for increased cooling

  • 3” diameter 4 layer aluminum coil

  • Standard or heavy duty coils available

  • N52UH Neo magnets (5, 7, or 9)

  • 10″ Progressive spiders (options for 2-6 depending on series)

  • Water jet and machined in house at Fi

  • 3 stage inductance and cooling options

  • 34mm Xmax

  • 12″, 15″, and 18″

Neo 3.5

PriceFrom $559.00
Logo Decal Color
  • Thiele/Small parameters


    Coils DUAL 1 | DUAL 2
    Fs Hz 29.6 Hz | 29.6 Hz
    Re 0.9 | 1.8
    Qms 6.98 | 7.01
    Qes 0.41 | 0.41
    Qts 0.38 | 0.38
    Mms 297g | 294g
    Cms N/A
    Sd 480cm^2 | 480cm^2
    Vas 26.11 l | 26.19 l
    Spl 85.1dB | 85.1dB
    Bl  15.6N/A| 21.1N/A
    Xmax 34mm (One Way)
    Rms 1750W


    Overall ø


    Cutout ø


    Mounting Depth



    .19 cuft

    Sealed ft3


    Ported ft3

    1.8-2.5 cuft

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