Garage
Shop

See all parts that fit your 1998 750iL

Hifonics HFi 12S4

12" Single 4 ohm Subwoofer (HFi12S4)

Hifonics
Shop all Hifonics
Product videos
highlight-star-icon

12” Single 4 Ohm HFi Series Subwoofer • 600W Max • 300W RMS • Injected Poly Light Rigid Cone • 1” NBR Reinforced Rubber Surround • Sinlge 4 ohm High-Temp Voice Coil • Heat Dispersing Ported Back Plate • High Strength ABS Motor Cover

Learn more about the hfi12s4

We apologize

This item has been discontinued


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

Product Highlights


12” Single 4 Ohm HFi Series Subwoofer • 600W Max • 300W RMS • Injected Poly Light Rigid Cone • 1” NBR Reinforced Rubber Surround • Sinlge 4 ohm High-Temp Voice Coil • Heat Dispersing Ported Back Plate • High Strength ABS Motor Cover

Description


Hifonics brand icon

Authorized dealer

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 Wiring Guide


Wiring Guide to Wire 1 Hifonics HFi 12S4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Hifonics HFi 12S4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Hifonics HFi 12S4 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Hifonics HFi 12S4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Best selling similar products

Marine Club 12 small

JBL CB122 Club Marine 12

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Polypropylene Cone
• Rubber Surround
• Impedance: Single 4 ohm
• Mount depth: 7-13/16"
• Sensitivity: 89 dB

(1)

$119.95

List price $379.95

VCW124v3 small

NVX VCW124 Version 3 (VCW124v3)

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)

(132)

$239.99

List price $287.99

SQW124 small

NVX SQW124

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB

$299.99

List price $359.99

Specifications & Details


Subwoofer Specifications
Subwoofer Size
12"
Peak Power Handling
600 watts
RMS Power Handling
300 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Sensitivity
88 dB
Xmax (millimeters)
11 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Injection Molded Polypropylene
Woofer Surround
Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.25 cubic feet
Maximum Sealed Box Volume
2.15 cubic feet
Minimum Ported Box Volume
1.75 cubic feet
Maximum Ported Box Volume
2.5 cubic feet
Top-Mount Depth (Mounting Depth)
5.7"
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

HFi12S4

Weight:

10.00lbs

Internal SKU:

hfi12s4

Internal Product ID:

13440

Product and How-to Videos


Customer Ratings & Reviews


Hifonics HFi 12S4 thumbnail image

5 star
75%
4 star
25%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
5
Features
4.5
Design
4.7
Usability
4.9

Customer Reviews

Sort by:

Loading...

Hifonics 12s4

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.

By Jay on February 21, 2009

13 found this helpful


Perfect replacement for my Pioneer home stereo powered sub!!!

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.

By Bradford on December 24, 2008

11 found this helpful


Sub hifon.

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.

By Martinezmang on August 17, 2009

10 found this helpful


loud subs

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

By Michael on December 23, 2008

10 found this helpful


A snipers sub

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

By Alexander on July 11, 2008

10 found this helpful


awesome

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.

By alex on July 23, 2008

9 found this helpful


BEST SUB FOR THE $$$

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!!!!

By family man on November 28, 2009

9 found this helpful


Not So Budget Subs

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.

By Jose on July 7, 2009

7 found this helpful




TA2043B small

Scosche TA2043B / TA2043

Single DIN Installation Dash Kit with Pocket for Vehicles

(8)

$12.99

List price $17.95

XRS9300 small

Cobra XRS9300

$69.99

List price $129.99

205CVR122_MDFD12_05SW1620 small

Kicker 2 CompVR 12" Combo: Dual 2 ohms x 2

2) 05CVR122 Subs + Dual 12" Sealed MDF Box + Kicker SW1620 Speaker Wire

(182)

$277.94

List price $499.88

MDR-E10LP/VC small

Sony MDR-E10LP/VC (Violet MDR-E10LP)

Fashion Earbud Stereo Headphones w/ iPhone Compatible Mini Plug (MDRE10LP, MDRE10LP/VC)

(1)

$8.99

List price $14.99

PD-186 small

Phoenix Digital PD-186 7" TFT-LCD Ceiling Mount Monitor

$129.99

List price $399.99

SPS-M600 small

Alpine SPS-M600 (White Grilles)

6-1/2" 2-way Marine Speakers with White Grilles

(3)

$69.99

List price $99.99

PCX352 small

Blaupunkt PCx352 3-1/2" ProComponent Series

(1)

$19.99

List price $39.99

VR500CSBT small

VR3 VR500CS-BT Open Box

In-Dash Single DIN CD, AM/FM Receiver with Built-in Bluetooth, SD Card Slot, and Remote

$59.99

List price $129.99

MDR-E10LP/BC small

Sony MDR-E10LP (Black)

Fashion Earbud Stereo Headphones w/ iPhone Compatible Mini Plug (MDRE10LP/BC, MDRE10LPBC)

$7.99

List price $14.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1998 BMW 750iL

2000 Chrysler Concorde

2011 Aston Martin DB9

2025 Ford Ranger

2006 Honda S2000

2005 Kia Spectra

2005 Nissan Maxima

1998 Toyota Celica

2003 Toyota Avalon

1996 Saturn SC1

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.