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NEO 4.x

$599.00

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The NEO 4.x Series of Fi subwoofers is designed to meet the needs of the serious competitor and and monster basshead.

SKU: NEO4.x Categories:

Neo4.7:
Comparable to SP4 and BTL4 series drivers. Solid 4″ workhorse subs that work well in just about any application. Standard 3 spider suspension. 3500W. 12″, 15″, and 18″ sizes.

Neo4.9:
Comparable to SP4+ or Team series drivers depending on coil option. Comes with standard 4″ 4 layer and 4 spiders with the option for the Plus 4″ coils, with extra spider and gap option. 4 spider on standard and 5 spider on Team coil. Works well in ported, 4th or 6th order applications. 3500W-4500W depending on the coil and cool/IND options. 12″, 15″, 18″ and 21″ sizes.

Neo4.11:
The midpoint between the Delta and Omega lines: Comes with standard 4″ 4 layer and 4 spiders with the options for the Plus 4″ coils, extra spider, and gap option. Designed for modern monster applications in ported, 4th or 6th order high-pressure systems. 3500-many Watts depending on the coil and cool/IND options. 12″, 15″, 18″ and 21″ sizes.

All Neo4.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 aluminum 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.

 

  • 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

  • 2750W on up depending on options

  • Open column motor design for increased cooling

  • 4” diameter 4 layer coil

  • Standard or heavy duty coils available

  • N52UH Neo magnets (7,9, or 11)

  • 10″ Progressive spiders (options for 3-6 depending on series)

  • Water jet and machined in house at Fi

  • 3 stage inductance and cooling options

  • 33mm Xmax

  • 12″, 15″, 18″, and 21″* sizes (*21″ available only on 9 or 11 magnet)
Weight 67 lbs
Dimensions 16 × 16 × 16 in

Thiele-Small Parameters

  NEO4.7  12 NEO4.7 15 NEO4.7 18
Coils DUAL 1 | DUAL 2 DUAL 1 | DUAL 2 DUAL 1 | DUAL 2
FS 32.8 Hz  30.4 Hz 29.1 Hz
RE 0.7 | 1.4 0.7 | 1.4 0.7 | 1.4
QMS 6.62 6.93 7.61
QES 0.45 0.48 0.53
QTS 0.42 0.44 0.50
MMS 367g 402g 484g
CMS N/A N/A N/A
SD 480cm^2 810cm^2  1210cm^2 
VAS 20.70 l 59.05 l 126.58 l 
SPL 83.9dB 87.6 89.5dB
BL 15.27 N/A | 21.6 N/A 15.27 N/A | 21.6 N/A 15.27 N/A | 21.6 N/A
XMAX 34mm (One Way) 34mm (One Way) 34mm (One Way)
RMS 3500W 3500W 3500W

Technical Specifications

  NEO4.7 12 NEO4.7 15 NEO4.7 18
Overall Diameter 12.500” 15.625” 18.500”
Cutout Diameter 11.125” 14.125” 16.750”
Mounting Depth 10.00” 11.00” 12.250”
Driver Displacement 0.19cuft 0.21cuft 0.26cuft
Ported Box 1.8-2.5 cuft 3-5 cuft 5-8 cuft

Thiele-Small Parameters

  NEO4.9 12 NEO4.9 15 NEO4.9 18 NEO4.9 21
Coils DUAL 1 | DUAL 2 DUAL 1 | DUAL 2 DUAL 1 | DUAL 2 DUAL 1 | DUAL 2
FS 34.2 Hz 32.0 Hz 31.7 Hz  00.0 Hz
RE 0.7 | 1.4 0.7 | 1.4 0.7 | 1.4 0.7 | 1.4
QMS 6.51 7.39 8.21 0.00
QES 0.37 0.39 0.45  0.00
QTS 0.35  0.37 0.42 0.00
MMS 368g 419g 489g 000.0g
CMS N/A N/A N/A N/A
SD 480cm^2 810cm^2 1210cm^2 1650cm^2
VAS 19.3 l 55.2 l 111.3 l 000.0 l
SPL 85.2dB 88.7dB 90.4dB 00.0dB
BL 17.6 N/A | 24.9 N/A 17.6 N/A | 24.9N/A 17.6 N/A | 24.9 N/A 17.6 N/A | 24.9 N/A
XMAX 34mm (One Way) 34mm (One Way) 34mm (One Way) 34mm (One Way)
RMS 3500-4500W * 3500-4500W * 3500-4500W * 3500-4500W *

Technical Specifications

  NEO4.9 12 NEO4.9 15 NEO4.9 18 NEO4.9 21
Overall Diameter 12.500” 15.625” 18.500” 21.625″
Cutout Diameter 11.125” 14.125” 16.750” 19.250″
Mounting Depth 10.00” 11.00” 12.250” 11.750″
Driver Displacement 0.19cuft 0.21cuft 0.26cuft 0.33cuft
Ported Box 1.8-2.5 cuft 3-5 cuft 5-8 cuft 7-10 cuft

Thiele-Small Parameters

  NEO4.11 12 NEO4.11 15 NEO4.11 18 NEO4.11 21
Coils DUAL 1 | DUAL 2 DUAL 1 | DUAL 2 DUAL 1 | DUAL 2 DUAL 1 | DUAL 2
FS 36.1 Hz 33.6 Hz 33.4 31.4
RE 0.7 | 1.4 0.7 | 1.4 0.7 | 1.4 0.7 | 1.4
QMS 6.83 7.31 8.44 9.36
QES 0.28 0.30 0.35 0.43
QTS 0.27 0.29 0.33 0.41
MMS 381g 420g 489g 639g
CMS N/A N/A N/A N/A
SD 480cm^2 810cm^2 1210cm^2 1650cm^2
VAS 17.1 l 48.8 l 95.1 l 153.6 l
SPL 86.4dB 89.7dB 91.9dB 92.3dB
BL 20.4 N/A | 28.7N/A 20.4 N/A | 28.7 N/A 20.4 N/A | 28.7 N/A 20.4 N/A | 28.7 N/A
XMAX 34mm (One Way) 34mm (One Way) 34mm (One Way) 34mm (One Way)
RMS 3500-4500W+ 3500-4500W+ 3500-4500W+ 3500-4500W+

Technical Specifications

  NEO4.11 12 NEO4.11 15 NEO4.11 18 NEO4.11 21
Overall Diameter 12.500” 15.625” 18.500” 21.625”
Cutout Diameter 11.125” 14.125” 16.750” 19.250”
Mounting Depth 10.00” 11.00” 12.250” 11.750”
Driver Displacement 0.19cuft 0.21cuft 0.26cuft 0.34cuft
Ported Box 1.8-2.5 cuft 3-5 cuft 5-8 cuft 7-10 cuft

fedex_ground

Subwoofers & Recones are dispatched via FedEx Ground. Small goods such as sticker packs, various apparel items are shipped via USPS. Upon dispatch of your goods, order status will be updated from “test/pack” to “shipped” which is accompanied with tracking details.

General Information

All orders are custom made to your selected options.  Each order is machined from raw steel and hand made after it is ordered.  This normally takes 10-15 business days, but due to unforseen issues it can take longer. We will note much of this directly on the individual product pages and try to update this weekly.  There are a couple of times a year that we simply can not keep up with sales and these “normal” time lines will not be in effect.  These times normally include Black FiDay and tax season.  During these times we will run batch orders per series and not individual orders.  This increases our overall efficiency, but can put your order into a later build date.  Fi will maintain reasonable communication should an item take longer than our normal 15 business days to make during our normal build seasons.  Often we will post through Facebook and Instagram our batch sequences to give all customers a better time line.  We also note for each item the current lead times (which can be longer than our normal 10-15 business days. Should an item take longer than normal, all refund policies still are in effect.

Delivery Location

Items offered on our website are only available for delivery to the verified billing addresses in the US and Canada. We also accept orders from international customers who are shipping to addresses on an individual basis.  All items will ship direct from our Las Vegas, Nevada location.

Delivery Time

An estimated delivery time will be provided to you once your order is placed. Delivery times are estimates and commence from the date of shipping, rather than the date of order. Delivery times are to be used as a guide only and are subject to the acceptance and approval of your order.  Deliveries will be made through FedEx Ground unless otherwise noted.  Delivery times in the US generally take from 1 to 5 business days depending on how far you are from our facility in Las Vegas, Nevada

Unless there are exceptional circumstances, we make every effort to fulfill your order within [15] business days of the date of your order. Business day mean Monday to Friday, except holidays.

Date of delivery may vary due to carrier shipping practices, delivery location, method of delivery, and the items ordered. Products may also be delivered in separate shipments.

Delivery Instructions

We will only ship to the customers billing address.  No exceptions.  All orders are shipped with direct signature required.  We will not ship orders without direct signature, sorry if this causes any inconvenience.  Fedex will send an email to your customer supplied email address once the order has shipped.  This normally happens after 6PM PST on the day it is picked up.

Shipping Costs

Shipping costs are based on the weight of your order and the delivery method. To find out how much your order will cost, simple add the items you would like to purchase to your cart, and proceed to the checkout page. Once at the checkout screen, shipping charges will be displayed.

Additional shipping charges may apply to remote areas or for large or heavy items. You will be advised of any charges on the checkout page.  

All shipping rates are pulled directly from our FedEx rate chart.  We do not charge extra over our actual cost from FedEx.  Fi also pays from its own pocket for DSR (Direct Signature Required) and Insurance for any order over $500.

Damaged Items in Transport

If there is any damage to the packaging on delivery, contact us immediately.  A claim will need to be filed with Fedex.  In contacting us please have your order number (it has been emailed to you and is on the shipping label) and your tracking number (emailed to you and on the shipping label) ready to expedite the claims policy.

Questions

If you have any questions about the delivery and shipment or your order, please contact us.

  • Rkmiller82@yahoo.com

    This is my first time ordering from Fi.
    I’m very satisfied.
    These Subs are awesome “4.9s”

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