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Hifonics HFi12D4

12" Dual 4 ohm HFi Series Car Subwoofer

Discontinued
|

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

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Hifonics HFX12D4

OUR PRICE: $39.99

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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" Dual 4 Ohm HFi Series Subwoofer
  • Power Handling:
    • Peak: 600 watts
    • RMS: 300 watts
  • Impedance: Dual 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
  • Dual 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
Read more about the HFi12D4 at our blog.

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.
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.
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
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.
5-3/4"
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

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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
28%
3 Star
7%
2 Star
1%
1 Star
3%

Average Attribution Rating

Durability
4.2
Value
4.7
Features
4.3
Design
4.4
Usability
4.7

jon

twin falls

Overall
Durability
Value
Features
Design
Usability

eh not to good :/

November 12, 2010

i hooked 2 of these up and ran them at 300 watts rms each and the second day of playing them they started to bottom out on a few songs and they almost blew :/ but on low volume these really compliment the music but if your looking for low and loud bass these wont do the job as well as others

2 of 2 found this helpful

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chris

Miami, FL

Overall
Durability
Value
Features
Design
Usability

greatt sub veryy satisfiedd!

November 6, 2010

This is a great deal for the price I got two hooked up to a 800 watt kenwood amp giving 230 rms to each sub and its beating up my trunk like you wouldnt believe people even been askin me if they were two 15"s!! I think there loud and meet most peoples expectations, imo great buy you wont be disappointed..planning on buying two more in the future and a bigger amp but for now im defenetly loud with these

2 of 2 found this helpful

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Mr.Bird

Mercer,Pa

Overall
Durability
Value
Features
Design
Usability

Best cheap sub i found for the cash

June 15, 2010

I had doubt`s about a sub this cheap. I bought 4 of them and put them in a ported box and all i can say is wow they sound awesome for the price and get pretty loud but they do have limits. I have them hooked to a hifonics brutus bxi1610d in a 2 Ohm load and if turned up to loud you can smell them but for the price there not bad but if you want ground pounding bass look to other subs but if your on a budget & just looking for something to get by with there worth the cash....

2 of 2 found this helpful

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KyL

Elk Grove, CA

Overall
Durability
Value
Features
Design
Usability

I love em

June 8, 2010

These subs far exceeded my expectations for how much I paid for them. I have these in a fat ported box in my Civic with a Boss GT1500D. All it does is rattle everything and make everyone laugh. Unfortunately, the frequency response isn't quite up there with Kicker or other top brands. They quiver a bit in hi-bass, the mid-bass in these are great, but they kinda bottom out when it comes to low-bass. Surely, they earthquake on low-bass but its just not quite up there with other subs. But all in all, they are still a definite GO for how much they cost. So buy em =]

2 of 2 found this helpful

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Schu

ohio

Overall
Durability
Value
Features
Design
Usability

Should cost more!!

December 10, 2011

I have one with 8ohms @ 200 watts. All I can say is it sounds as good as my JL 12. And this 12 was only $40.00 I would buy again in a heart beat. You will not be sorry. Also mine is in a hatchback. Very nice sound.

0 of 0 found this helpful

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jackie

neosho, MO

Overall
Durability
Value
Features
Design
Usability

this hifonics sub was great

December 6, 2011

Great sub for the money!

0 of 0 found this helpful

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corey

Inverness, FL

Overall
Durability
Value
Features
Design
Usability

149.5 db

August 20, 2011

I have 6 of these in a ford explorer in a 15 cube ported box tuned to a 30 hertz note. they are fed by a nappy precision power 2000 watt amp. People ask me what i have, i tell them hifonics, they kind of shrug and walk away but when i rip the volume knob they coming running to hear them. IMO for the money there an excellent sub for any use. Till then keep bumping my friends.

0 of 0 found this helpful

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Gustavo

York, SC

Overall
Durability
Value
Features
Design
Usability

Lovin Em!!!

July 4, 2011

Had them for a good amount of time now. In my opinion they look great. they take me daily beating, not too much power though, just a pioneer 760 watt. rms every day. My experience, these are the loudest ive heard in my area, and i just love em!

0 of 0 found this helpful

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antonio

Mayodan, NC

Overall
Durability
Value
Features
Design
Usability

GREAT

June 7, 2011

I have 2 of these in a ported box tuned to 36 hz with a TXi 7506 at 1 ohm these take it like a champ, break in time is a bit long (12hrs) but no other sub will beat it

0 of 0 found this helpful

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shawn

battle creek, MI

Overall
Durability
Value
Features
Design
Usability

Not Too Shabby

May 30, 2011

I bought this sub for my girlfriend's station wagon, and put it in a large custom ported box. didn't have enough power running to it for its full performance but was loud and caught the lows a lot better than I expected. There were some downfalls to it though mostly having to do with the Look/Design of this woofer. First: the cone is a little flimsy and rattles quite a bit when its hitting some of the higher bass notes, but i wouldn't throw it out for that. I just wouldn't recommend having the sub in the passenger compartment where you can hear the cone so much (preferably install in a trunk in a nice sealed box). Second: the ring that you put the screws through in order to mount the the sub isn't just a flat piece nor is it solid, so if you reef on the screws to make sure its tightly sealed, it flattens out and could hurt the surround if flattened too much. And Third: the chrome polished basket looks good, but the ABS plastic magnet cover has the capability to rattle some too, it just feels as though its a useless part that they put on to beautify the back and didn't put much energy into making it serve more of a purpose. All in all it does what its supposed to do, and was worth every penny.

0 of 0 found this helpful

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cj

arkansas

Overall
Durability
Value
Features
Design
Usability

price

May 29, 2011

I bought these two months ago, from Sonicelectronix and the price was only 39.00 so look some where else b4 you buy here.

0 of 0 found this helpful

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frank lane

rayville la

Overall
Durability
Value
Features
Design
Usability

hifonicsubs

May 6, 2011

I have 4 hifonic 12d4 on a planet audio 1600 u can here it a mile looking far a hifonics 2600 watt amp

0 of 0 found this helpful

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Phatboy

newark ny

Overall
Durability
Value
Features
Design
Usability

love them

May 1, 2011

I have 2 of them hooked up to a 2000 watt amp pushing 600 to each sub thats max power and its crazzy u can here the 4houses down from mine loud and clear iv been running them like that for year now nohing went wrong yet worth the money

0 of 0 found this helpful

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goofy

sparta, tn

Overall
Durability
Value
Features
Design
Usability

good price

March 28, 2011

These are good speakers. For the money. I like them I would recommend them to somebody else.

0 of 0 found this helpful

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dylan

hanover, MN

Overall
Durability
Value
Features
Design
Usability

hits hard

March 23, 2011

i recently had a soundstream t5 10" wired to 1 ohm but it broke i got one of these and wired it to 2 ohms and it hits harder then the soundstream t5. definitely a good buy

0 of 0 found this helpful

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Swanks

Canton, NC

Overall
Durability
Value
Features
Design
Usability

Best Bang For Your Buck!!

March 22, 2011

For the price, I dont feel you can beat this speaker. It is crisp, clear, and best of all, HITS HARD IN A PORTED BOX. I built the box to Hifonics specs with the proper volume and port size, and I am very happy with its performance. I have delt with many high end, high dollar woofers and Im just amazed at this little cheap guy. I am giving it roughly 600watts RMS and 1000Watts peak with no distortion, just clean hard bass. I was unsure about giving it this much power, but it handles it very well. Its all about the box and amp. Dont skimp on a box, get the proper volume and port size and this sub will impress you. Bass, I love You plays amazing and this woofer can MOVE SOME AIR. Thats all I have to say.

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Bryan

Crawfordville, FL

Overall
Durability
Value
Features
Design
Usability

Pretty Good - Run them at 200 rms and they are fine.

March 22, 2011

I purchased one of these speakers at a liquidation, which cost me more. I built my own box to my specs because i like bass around 20 to 35 hertz. My box is 3.92 cubic ft with a 4 inch port, tuned it to 25 hertz. with this speaker it really pounds some those low low bass songs. Songs used: "I'm Goin In" - Lil Wayne, "6 Foot 7 Foot" - Lil Wayne "It's Goin Down" - Yung Joc "Blueberry Yum Yum(Chopped and Screwed) - Ludacris". Some songs from Birdman, of course "Late Night Tip" - 3 6 Mafia. "Oxycotton(Chopped and Screwed)" - Lil Wyte "In Da Club " - 50 Cent. "Hypnotize & White Girl" - Young Jeezy These are just a few I could remember

0 of 0 found this helpful

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cj

arkansas

Overall
Durability
Value
Features
Design
Usability

to help understand

March 9, 2011

This is a great sub for the price but people should know that you haft to the right box if it bottoms out the box is to big if it pops loudly the box is to small, ported boxes move alot of air so you can make any sub bottom out, Hifonics is cea certified for true power so you can bash a company that has over 25 years of experience, plz build the box to there specs usually a 1.2 to 1.5 cuft box will do

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iMISSmyROCKFORDS

EGFL

Overall
Durability
Value
Features
Design
Usability

Seriously

March 8, 2011

Ok so I was very unsure of buying these subs, I got 2 of em for $50.. and that alone should make anyone unsure lol, but I blew my old subs and needed something quick and cheap so I got these.. I WASNT an idiot and hooked them up to max rms and try to slam them to max the second day I got them.. I know you have to break subs in, so for about 5weeks I kept these at roughly the same low to medium volume. i have them hooked up to a Rockford P500.2 which is 250w RMS @ 2ohms x2.. I kept my bass knob at a little less than 1/4 of the way up.. and after the breaking in period I could notice a huge difference SERIOUSLY.. I can turn these to a high volume with bass boost almost 1/2 the way up and it is thunderous! I just suggest read the specs and tune your amp accordingly and these things are amazing! 2 thumbs way up

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freakny

new york

Overall
Durability
Value
Features
Design
Usability

good bang for buck

March 1, 2011

I have two in a 4.0 cube ft box tuned to 34hz running on a usamps b100.For the price great buy lacks some on low end but for price wow.

0 of 0 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 $34.99

Single 12" Sealed MDF Subwoofer Enclosure

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

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 $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 $59.99

Dynamat Sound Dampening Trunk Kit

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

Your Price $109.95

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

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

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 $3.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

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

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

1mm All Purpose Solder

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

Your Price $8.99

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

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Hifonics HFi12D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Hifonics HFi12D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Hifonics HFi12D4 Subwoofers

Mono Amp

4 Channel Amp

4 Hifonics HFi12D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Product Summary

Manufacturer

Model Number

HFi12D4

UPC

806576214229

Weight

9.75lbs

Internal SKU

hfi12d4

Internal Product ID

9357

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 HFi12D4