Expert Service 1-661-257-9993 [Hours]

Hifonics HFi 12S4

12" Single 4 ohm Subwoofer (HFi12S4)

Discontinued
|

We apologize

This item has been discontinued

Item Added to Cart

Hifonics HFi 12S4

12" Single 4 ohm Subwoofer (HFi12S4)

$44.99

Keep Shopping

Get Added Peace of Mind with SquareTrade

Why SquareTrade?

  • The #1-Rated Protection Plan
  • 5-Day Service Guarantee & Free Shipping
  • Protection from Normal, Everyday Use
You have added a warranty
$4.99
Add Warranty
3 years of protection

Single 12" Sealed MDF Subwoofer Enclosure

Durable 3/4" Medium Density Fiberboard (MDF) Construction

$39.99

Add
NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

$39.99

Add
20 Square Feet of Sound Dampening Material

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

$53.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Hifonics HFi 12S4.

Get FAST answers from customers ASK a Question See questions answers

Big Bass on a Budget

When it comes to superior bass without a hefty price, the Hifonics HFi subwoofers take the lead. Hifonics has developed this great looking subwoofer specifically as an entry level subwoofer, however they integrate many of the technologies found in their high end subs. Sturdy spring loaded terminals ensure a secure connection that will not come loose. The high-energy magnet is surrounded by a anti-resonant rubber boot cover. A cooling system surrounds the multiple layer, high temperature voice coil to assist in keeping the voice coil cool. These incredible starter subwoofers are designed for enhanced thermal dissipation, more power handling, long excursion capability and highly optimized motor/suspension system that ensures clean, articulate bass reproduction with impressive low frequency extension. For the biggest bass on a budget, look to the Hifonics HFi series subwoofers!

  • 12” Single 4 Ohm HFi Series Subwoofer
  • Power Handling:
    • Peak: 600 watts
    • RMS: 300 watts
  • Impedance: Single 4 ohm
  • Injected poly light rigid cone
  • 1” NBR Reinforced rubber surround
  • High-excursion rubber surround
  • Integrated one piece poly cotton spider
  • Poly-mica cone damping
  • Nickel plated push and insert speaker terminals
  • Single 4 ohm high-temp multi-layer high-temp voice coil
  • Front-plate and voice-coil cooling
  • Poly light dust cap
  • Heat dispersing ported back plate
  • Ultra ridged chrome stamped steel basket
  • High strength ABS motor cover
  • High-energy magnet
  • Large air cooled magnet assembly
  • Anti-resonant rubber magnet boot
  • Sensitivity: 88 dB
  • 1-year SonicElectronix.com warranty

Product History:

Hifonics HFi12S4 thumbnail
(newest, current model)
Hifonics HF12S4 thumbnail
(previous model, replaced by Hifonics HFi 12S4)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
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.
600 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.
300 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.
Single
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
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
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".
88 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.
11 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.
Injection Molded Polypropylene (IMPP)
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
Magnet Structure
Defines the overall structure of the subwoofers magnet.
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
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
2.15 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.
1.75 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
2.5 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.
5.7"
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

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

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
75%
4 Star
25%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
5.0
Features
4.5
Design
4.6
Usability
4.9
Bradford

Canada

Overall
Durability
Value
Features
Design
Usability
Perfect replacement for my Pioneer home stereo powered sub!!!

December 24, 2008

The baffle on my Pioneer sub blew and instead of getting it repaired I simply replaced the speaker with this unit. The enclosure specs were 'close' enough for my liking.

What a difference!!! The Pioneer never sounded this good! I can now shake the light fixtures 2 floors up!

Very good - solid - speaker! The quality of the speaker boot material feels about 20 times stronger than my original Pioneer's stupid felt boot. Looking forward to many years of performance from this speaker.

10 of 12 found this helpful

Was this review helpful to you?

Martinezmang

lebanon, PA

Overall
Durability
Value
Features
Design
Usability
Sub hifon.

August 17, 2009

I have been buying from this site for about 6 years now, and they have great deals on audio stuff. This sub is a good buy for the money. Hits good and still holding up strong.

9 of 11 found this helpful

Was this review helpful to you?

Jay

Lebanon, PA

Overall
Durability
Value
Features
Design
Usability
Hifonics 12s4

February 21, 2009

I have been putting in systems for 10 year now and would recommend this sub for any one who doesn\'t want to spend a lot of cash. Good buy, sounds great.

9 of 11 found this helpful

Was this review helpful to you?

Michael

Apopka, FL

Overall
Durability
Value
Features
Design
Usability
loud subs

December 23, 2008

I've got 2 of these on a kole 480 amp and they are so loud that everything in my car moves

9 of 11 found this helpful

Was this review helpful to you?

Alexander

South Bend, IN

Overall
Durability
Value
Features
Design
Usability
A snipers sub

July 11, 2008

I run 4 of these subs as my lows in my old, they pound very nice, people say they can hear me a mile away, the trunk flex is ridiculous, moved so much I had to tighten the bolts! =O, currently have these running under a sound stream PCA4.400, the thump is very nice, as soon as my new fiberglass box is finished, it will be even better! =D

9 of 11 found this helpful

Was this review helpful to you?

alex

Clever, MO

Overall
Durability
Value
Features
Design
Usability
awesome

July 23, 2008

I have one of these on a 1000 watt autoteck amp in a ported box and it always has clean tight bass and never distorts.

8 of 10 found this helpful

Was this review helpful to you?

family man

columbus ohio

Overall
Durability
Value
Features
Design
Usability
BEST SUB FOR THE $$$

November 28, 2009

OK I GOT A PAIR OF THESE ABOUT 2 MONTHS AGO...ONLY BECAUSE I KNEW A COUPLE PEOPLE WHO HAD THEM AND THEY SOUNDED OK..BUT I KNEW I COULD MAKE THEM SOUND ALOT BETTER...SOO...I MADE A CUSTOM BOX FOR THESE THATS 3.4 CUBIC FEET TUNED TO 37 HERTZ..MAN WOW THAT IS THE KILLER BOX FOR THESE.. I HAVE THEM ON A CRUNCH 1500.1 THAT POWERS THEM EASILY...AND THESE CHEAP LITTLE SUBS ARE KILLING MY 1994 HONDA CIVIC HATCHBAK..THEY WERE IFFY AT FIRST BUT WHEN THEY GET BROKE IN..MUCH MUCH BETTER..

PROS..AWESOME QUALITY FOR THE PRICE..WELL BUILT..

CONS..LITTLE SPRING STYLE TERMINALS..ONLY ACCEPT LIKE LITTLE REMOTE SIZED WIRE..AND DECENT ON THE LOW END EXTENSION NOTES..LIKE 40 CYCLES AND BELOW..\

BUT A VERY VERY GOOD SUB..WONT WIN ANY SPL CONTESTS..BUT AWESOME FOR THOSE WHO WANNA ADD A LITTLE DEPTH OR GO FOR PURE SOUND QUALITY..MINE SOUND EXCELLENT!!!!

8 of 11 found this helpful

Was this review helpful to you?

Jose

Brownsville, TX

Overall
Durability
Value
Features
Design
Usability
Not So Budget Subs

July 7, 2009

these were supposed to be budget subs for my brother but man they hit hard and clean. man these hit real clean. theyre a lil bit louder than my 10" MTX Thunder 4500s cuz theyre 12s they still are not broken in and yet sound so clean I know they'll sound better when they are broken in. trust me you wont regret getting these subs.

6 of 8 found this helpful

Was this review helpful to you?

Accessory Tools and Products

Accessories added

Single 12" Sealed MDF Subwoofer Enclosure

Durable 3/4" Medium Density Fiberboard (MDF) Construction

Your Price $39.99

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $37.85

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

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

Your Price $53.99

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 $64.87

Dynamat Sound Dampening Trunk Kit

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

Your Price $87.63

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

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

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

Your Price $74.99

12 oz. Can of Adhesive Spray

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

Your Price $8.97

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

Universal 12" Subwoofer Grille

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

Your Price $19.95

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 $6.99

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 HFi 12S4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Hifonics HFi 12S4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Hifonics HFi 12S4 Subwoofers

4 Channel Amp

4 Hifonics HFi 12S4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

HFi12S4

UPC

806576214236

Weight

10.00lbs

Internal SKU

hfi12s4

Internal Product ID

13440

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 HFi 12S4