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FLI Underground FU12-F1A

12" Single 4 ohm FU Series Car Subwoofer

  • 5.0

(2 reviews)

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I chose Sonic Electronix for the best price and reputation. Excellent shipping service with OnTrac, they made the effort for a 2nd delivery on the same day to get me my package before the weekend. I will definitely use Sonic Electronix for my next stereo purchase.

- Jeff from Oak View, CA

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FLI Underground Subwoofers
Finding that perfect low-cost, high-performance subwoofer can sometimes be a challenge. FLI Underground takes out the guesswork and give you a subwoofer solution that great bass response and is easy on the wallet. The unique electroplated Injection Molded Polypropylene (IMPP) cone delivers fast, articulate bass. Connected to the cone is a large butyl rubber surround that improves the low frequency response. Spring-loaded terminals on the side of the basket provide a secure connection, as well as easier wiring. Being that the FLI Audio and FLI Underground models are designed by Vibe Audio, we can trust that these subwoofers are well built and will offer impressive bass response.

  • 12" Single 4 ohm FU Series Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 300 watts
    • Min Input: 150 watts
  • Impedance: 4 ohm
  • Electroplated Injection Molded Polypropylene (IMPP) Cone
  • Butyl rubber surround for improved low frequency response
  • Spring loaded nickel plated terminals
  • Rubber gasket provides an airtight seal
  • Multi layer voice coil with black aluminum former
  • Frequency response: 25-1,500 Hz
  • Sensitivity: 86 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Subwoofer Specifications
Subwoofer Series FU
Subwoofer Size 12"
Peak Power Handling 1000 watts
RMS Power Handling 300 watts
Voice Coil(s) Single
Impedance (Per Voice Coil) 4 ohms
Frequency Response 25 - 1500 Hz
Sensitivity 86 dB
Subwoofer Design Round / Circle
Main Cone Color Dark Gray
Woofer Composition Injection Molded Polypropylene (IMPP)
Woofer Surround Butyl Rubber
Subwoofer Grille No
Re-Cone Kit Available No
Recommended Enclosure Specifications
Recommended Enclosure Type Sealed
Minimum Sealed Box Volume 1.5 cubic feet
Maximum Sealed Box Volume 2.0 cubic feet
Top-Mount Depth 4-7/8"
Cutout Diameter 11-3/4"
Shallow Mount Installation No
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Customer Review Summary for FLI Underground FU12-F1A
Average Customer Rating is 5.0 out of 5 stars:
  • 5.0
based on 2 Reviews
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what's this?
Average Attributes Rating:
Durability
  • 5.0
5.0
Value
  • 5.0
5.0
Features
  • 5.0
5.0
Design
  • 5.0
5.0
Usability
  • 5.0
5.0
what's this?
Most Helpful Customer Reviews:
May 22, 2012 Great sounding
Review by
Kyle from Homosassa, FL
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I purchased this sub to go with a FLI Audio FU1000.1 mono amp. When the owners manual say there is a break in period for the sub they aren't lieing about it. When I first hook everythign up my 6.5 infinity components had more bass coming from them. I have played it now for probly 5 of the 30 hours recommended breakin period and the sub is really starting to come alive. Nice clean bass not that hit you in the chest bass but nice and clean. Don't get me wrong its loud but not overpowering.
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August 15, 2011 These slam!
Review by
Bill from Dunnellon, FL
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Fli audio 12" subs like here are a must buy. They have great quality for a entry level sub. I chose these over comps and p1. Give fli audio a try it's worth the money they are durable and get sound great.
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Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
  Product Price Add?
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single sealed 12" subwoofer enclosure made from 3/4" MDF construction and covered in black carpet.
$59.95
Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
  Product Price Add?
12" Universal Subwoofer Grille 12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$18.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
  Product Price Add?
15 ft. of 12 AWG StreetWires Speaker Wire 15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$24.99
20 ft. of 12 AWG Kicker Speaker Wire 20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$34.95
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
Dynamat Rubber Roller Dynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Xtreme Trunk Kit Dynamat Xtreme Trunk Kit
Get better sounding bass from your new subwoofer with enough Dynamat Extreme for your entire trunk.
$93.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
  Product Price Add?
20 oz. Bag of Poly-Fil 20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray 16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$6.99
Binding Post Terminal Cup Binding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$4.99
Banana Clip Terminals Banana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
Installation, Tools & Accessories
Don't forget to get the tools and accessories that will help you install your new subwoofer in your vehicle. Whether you opt for the professional installation card or the do-it-yourself method, you will need the following to help you out!
  Product Price Add?
Car Stereo and Speaker / Subwoofer Installation Tool Kit Car Stereo and Speaker / Subwoofer Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: FLI Audio
Model number: FU12-F1A
UPC: 086429226078
Weight: 8.23 lbs
Internal SKU: fu12f1a
Internal product ID: 32707