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Hifonics HFX12D4

400W 12" HF Series Dual 4 ohm Subwoofer

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$36.95

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Buy One, Get One 50% Off on Hifonics HF Series Car Subwoofer

Buy One Hifonics HFX12D4 Car Subwoofer at regular price and get 50% Off a second HFX12D4 Car Subwoofer! Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

18.48

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Hifonics HFX12D4

$36.95

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Hifonics HFX12D4

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Hifonics 12" HF Series Car Subwoofer

Sonic Electronix is now carrying the Hifonics HF Series Car Audio Subwoofers. The HF Series 12" Subwoofer has a peak power rating of 800 watts and a RMS rating of 400 watts. This sub will produce some ground shaking bass and is constructed with a injected poly light rigid cone and a 1" NBR reinforced rubber surround for enhanced excursion. This woofer is also equipped with a dual 4 ohm voice coil and a large air cooled magnet assembly. Add some bumps in your trunk and enhance your cars stereo system with this Hifonics HF Series Subwoofer.

Product Features

  • 12" HF Series Dual 4 Ohm Car Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Impedance: 4 ohm
  • Injected poly light rigid cone for excellent durability
  • 1" NBR reinforced rubber surround provides large amounts of excursion
  • Integrated one piece poly cotton spider
  • Spade style speaker terminals
  • Poly light dust cap
  • Heat dispersing ported back plate
  • Ultra ridged chrome stamped steel basket
  • High strength ABS motor cover
  • Operates In sealed & ported enclosures
  • DVC 4 ohm high-temp KSV voice coils
  • Large air cooled magnet assembly
  • Sensitivity: 87.25 dB
  • Xmax: 6.5 mm
  • Mounting Depth: 5-5/8"
  • Mounting Diameter: 10-15/16"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Hifonics HFX12D4 thumbnail
(newest, current model)
Hifonics HFi12D4 thumbnail
(previous model, replaced by Hifonics HFX12D4)
Hifonics HF12D4 thumbnail
(previous model, replaced by Hifonics HFi12D4)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
HF (Hifonics)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
800 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
400 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
Not specified by manufacturer
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
87.25 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
6.5 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Injected poly light rigid
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Rubber
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.6 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.0 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
5-5/8"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
10-15/16"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
61%
4 Star
30%
3 Star
5%
2 Star
3%
1 Star
1%

Average Attribution Rating

Durability
4.3
Value
4.8
Features
4.2
Design
4.4
Usability
4.6
Ricky Shade

Tampa, FL

Overall
Durability
Value
Features
Design
Usability
Keeps blowing me away more and more!

November 6, 2011

This sub just keeps hitting harder and lower! I'm amazed and blown away! I was underwhelmed for a while there because I realized that I actually killed my previous sub by sending a very strong and very clipped signal to it by having the gain set too high for my head unit's preamp voltage. To reach the ~250W RMS the amp is rated for with my head unit, I need the gain knob LESS than half way up. Any more than that and it starts distorting, and this is not because of the sub but because I'M SENDING A CLIPPED SIGNAL FROM MY AMP. I feel like I've officially made that step from n00b to experienced installer. I had read all the instructions and guides before and never understood what they meant by matching the head unit's preamp voltage. Now I do and I know how not to kill a sub (and/or amp, for that matter).

Anyway, I had never broken in a sub and this sub is STILL blowing me away! It's hitting harder and it does better throughout the entire range. The lower notes (centered in the mid to high 30Hz range) I could barely feel at the start are now making the car have a slow, deep vibration when they hit (remember it's a sealed box). Being a 400W sub I feel like playing it full-blast at 250W RMS is good enough as 'breaking it in' and it is just finally beginning to impress me. It's hitting almost as hard as the Memphis sub that was getting a clipped signal with a few extra watts to compensate for my bass-trap trunk (thick leather seats, kills any bass trying to come from right behind you). Right now I'm keeping my rear seat's backrest down so I can feel the full effect of the sub.

I just can't wait to give it 400W. OMG. What a great sub. If 'you get what you pay for' is true 99% of the time, the HFX12D4 is the 1%, by far!

37 of 62 found this helpful

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Hijinx

oconto, WI

Overall
Durability
Value
Features
Design
Usability
Good entry level sub

December 15, 2014

Good sub for moderate power systems. Doesn't like peak power tho. Went thro 2 of them with 750 watts max. If your going to dump some power into your system (+1000 wats), subs are not the place to save some $$.

26 of 45 found this helpful

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suicide_doorz

San antonio, TX

Overall
Durability
Value
Features
Design
Usability
surprised

March 23, 2014

They actually sound good yet they're so inexpensive. I'm only using a 520 RMS amp and they bump, I can hear them from inside my house. A must if you're looking for some bang with out going broke.

16 of 26 found this helpful

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Ross

Oklahoma City

Overall
Durability
Value
Features
Design
Usability
Great Speaker Replacements

January 19, 2015

I have some custom speaker enclosures built in 1975. The woofers have been replaced over the years due to the foam surround deteriorating. These have a more durable treated nitrile rubber that should last and slightly larger voice coil. The speakers sound better than the originals!

23 of 42 found this helpful

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Ryan

Hays, KS

Overall
Durability
Value
Features
Design
Usability
Hifonics HFX1204

December 23, 2014

These subwoofers really hit hard for the price. Probably one of the best I have ever bought. We'll see how long they last.

22 of 40 found this helpful

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billy joe armstrong

Boise, id

Overall
Durability
Value
Features
Design
Usability
Sound quality > Rockford P3

December 11, 2014

Title says it all although rockfords not the best sub. Hifi is 1000% less than what its value is.

24 of 45 found this helpful

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fisher

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
Very powerful, ,,

September 24, 2014

Was hesitate to buy this,, glad I did hook up to a mofo 12, and re 10, I have 1/0 gauge from battery to cap then 4 gauge to amp,, I love it,, lights still go dim,, need extra battery it love power,, removed my crossfire xp1400d,, this is way better,,,,

27 of 51 found this helpful

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Drew

Deatsville, AL

Overall
Durability
Value
Features
Design
Usability
YEAH

May 8, 2014

these speakers are amazing and the price is even better. I bought two and thought they would so pretty okay since the price was so cheap but these things rattled the streets when I went to pc this and everytime I pull up at my house the walls rattle. GREAT SPEAKERS A MUST BUY!

25 of 47 found this helpful

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David

New Lenox, IL

Overall
Durability
Value
Features
Design
Usability
Its the best bang for your buck

February 1, 2013

The hifonics hfx12D4 is the best subwoofer on the market if your on a budget, yes the price may scare you, you say well with the sub that cheap how could it possibly be true that it sounds to good, well take it from me, i was very unsure of the purchase i made with this sub, i strictly went off of reviews, however, this subwoofer i my home theater sub, it hits. i owned 2 alpine type R 12s, so believe me i know what it means when a subwoofer hits. but the cold hard truth is, this sub is amazing the quality is so precise you cant help but to be cautious. BUY THIS SUBWOOFER YOU WILL NOT REGRET IT!!!

23 of 43 found this helpful

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Jermaine

Rockmart, GA

Overall
Durability
Value
Features
Design
Usability
awesome

October 9, 2014

Great Subs.Love Hifonics,you can never go wrong with them.And Sonic Electronix,I Salute on superb services.Thanks!

24 of 46 found this helpful

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tim

eureka, ca

Overall
Durability
Value
Features
Design
Usability
great product

May 23, 2014

I bought these to replace the blown subs in my daughters jeep. Great sound! These speakers really have great responce. Great value. Highly reccomend.

24 of 46 found this helpful

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Carl

White Cloud, MI

Overall
Durability
Value
Features
Design
Usability
Hifonics

May 5, 2014

I bought these as a gift for my girfriends birthday. And they are very decent subwoofers. Thanks sonic!

20 of 38 found this helpful

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dave

oklahoma city, ok

Overall
Durability
Value
Features
Design
Usability
love these subs...

March 28, 2014

I bought two of these and I installed them in my Honda Civic. Have them wired at 4 ohms and they rock my little Honda. I don't even have them in a ported box. I've had them for a month. The only downside are the wiring terminals.

16 of 30 found this helpful

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loudest 12's in idaho

sandpoint, idaho

Overall
Durability
Value
Features
Design
Usability
extremely impressed

March 26, 2014

i bought a set of these to replace some blown woofers in my house cabinets. of course after reading reviews i was curious since a lot of people have great things to say. i'm running mine in some older sear's fisher cabinets with decent crossovers ( not sure on specs ) off of a technics 5.1/stereo and in stereo mode i get about 150 watts per channel.

first you have to rip the plastic magnet cover off the back cause i could tell it was going to rattle just tapping on it. i wouldnt compare these to my L5's in my 7 cube ported box, but wow they sound amazing! my wife was amazed, and my brother in law who thinks he's an audio engineer was thoroughly impressed. i can't speak for the sound in a car. if i had them in a car i wouldnt feed the pair more than 1000 watts at most since they sound so good at lower power. if you are reading this i would say do it. buy one or 2 or what ever cause they sound good and only cost 35 bucks. absolutely perfect for house stereo woofer replacement. i gave it a lower ease of use score since you have to rip the stupid plastic cover off right away

11 of 20 found this helpful

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Franklin

Huntsville, AL

Overall
Durability
Value
Features
Design
Usability
Not Cheap Subs!

March 7, 2014

These subs may be priced very low, but they kick VERY hard. Almost as good as my friend's Kickers. Of course it's not broken in yet so, I think it can hit harder than the Kickers pretty soon. Bought 2 of these, maxxlink amp wiring kit ($29.99 here), Autotek 1000.2 amp, and a Ground Shaker box ($59.99)! All with $200! Cheap doesn't mean bad. Get a good amp, wires, and box and you're good to go! Trust me, these will not disappoint!

11 of 20 found this helpful

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dallas

Atlanta GA

Overall
Durability
Value
Features
Design
Usability
no complaints

November 25, 2012

i got these for 35 a piece and they rock...i have 2 of them in my wifes car wired at 1ohm on a boss 2500 mono amp..and these hit so hard..if you are wondering about getting them based on the price if they are cheap...DONT..get them you will not be disappointed they are worth double the price..

5 of 8 found this helpful

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Logan

crescent city

Overall
Durability
Value
Features
Design
Usability
Nice sub

December 30, 2011

Sounds looks and is a great sub. Best for the money.

26 of 50 found this helpful

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Roberto

Van Nuys, CA

Overall
Durability
Value
Features
Design
Usability
Great product

November 5, 2014

I've had these subs two of them hooked up to a crunch 1500 powerzone amp in a sealed box and they bump!! I've had them for two weeks and still working great! I had a previous set of subwoofers that hit great lows and I'd say that these subs don't hit great lows but they hit really crisp mids and highs :) I love them either way at great price I don't mind I'll probably get a third 12 that mainly hits great lows to even out :)

17 of 33 found this helpful

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Sergio

Greenville, SC

Overall
Durability
Value
Features
Design
Usability
Great

April 9, 2014

Good pounding subs for a great price one of the best subs I have had for a great price.

13 of 25 found this helpful

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PA Bum

Borogue, PA

Overall
Durability
Value
Features
Design
Usability
great with one easy fixable flaw

December 27, 2013

because of the design or the cage. the plastic cage rattles against the metal right below it. at first i had thought i had messed up my friends subs. then i realized because of the design of the cage it made it rattle. its a VERY easy fix. just go to your local hardware store and get some all purpose silicone or caulk and put it right underneath the plastic cage inbetween the plastic and the metal. let it dry. hook up your subs. problem solved! these are great subs. for the price of the subs i think its worth spending an extra 5$ and putting silicone on it.

one of my FAVORITE subs. they hit NICE AND HARD. i would definitely recommend

10 of 19 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $29.99

Single 12" Venteded MDF Subwoofer Enclosure

12" Vented 3/4" MDF Enclosure Lined w/ Polyfil.

Your Price $54.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $9.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $94.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 Hifonics HFX12D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Hifonics HFX12D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Hifonics HFX12D4 Subwoofers

Mono Amp

4 Channel Amp

4 Hifonics HFX12D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Items we think you might want
HFX12D4-PAIR thumbnail
Hifonics HFX12D4 Subwoofer Pair Combo

• Pair of 12" HF Series Dual 4 Ohm Car Subwoofers
• 800W Peak
• 400W RMS
• Injected Poly Light Rigid Cone
• 1" NBR Reinforced Rubber Surround
• One Piece Poly Cotton Spider
• Spade Style Speaker Terminals
• Chrome Stamped Steel Basket

Your Price $64.27

Browse 3 questions and 18 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Has very positive reviews, and after a little research I found with the 50% off the second one it was a great buy!
Sebastian C on Mar 25, 2015
SOUND LIKE A VERY GOOD SUB FOR A FRACTION OF WHAT YOU WOULD PAY ANYWHERE ELSE
Tammy C on Mar 6, 2015
To compliment my other Hifonics sub of the same model. I am highly satisfied with the product due to it's high quality for low cost.
CARI L on Mar 10, 2015
this is a great sub .. got a big ported box for it and it sounded great .....will purchase again if needed
ruben v on Feb 26, 2015
350 watts rms should be fine right? for 2 of these
A shopper on Nov 30, 2014
Best Answer: Yes sir. They are great entry level subs and will do good on that much power. Set all your gains and bass ect. correctly and you will b set.
Reply · Report · James S on Nov 30, 2014
· Add Answer · I Have This Question Too (0)
Can i use this sub (one only) with 1100 peak power and 330 rms power @ 4 ohm x1, amp?
A shopper on Nov 17, 2014
Hifonics HFX12D4
Hifonics HFX12D4
Hifonics HFX12D4-PAIR
Hifonics HFX12D4-PAIR
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

HFX12D4

UPC

806576217961

Weight

9.50lbs

Internal SKU

hfx12d4

Internal Product ID

37709

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Hifonics HFX12D4