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Boston Acoustics G312-44

12" Dual 4 ohm G3 Series Car Subwoofer

Discontinued
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This item has been discontinued

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Customization with Boston Acoustics G3 Subwoofers

Boston Acoustics' G3 series subwoofers provide deep, crisp, responsive, and quality bass that has come to be expected from a high-end company like Boston Acoustics at an affordable price. Featuring Soft Part System (SPS™) technology that will allow the removal of soft parts in case of an impedance change when adding more subs, repair if the voice coil fails and is damaged, and it also allows for customization by allowing the basket and back screen to be removed from the motor structure. This will then allow the option to paint, chrome, or even powder coat to make your subwoofer really stand out. G3 series subwoofer also feature SureSet™ impedance selection that makes wiring easy and accurate as well as adds protection from overdrive to the voice-coil, and a RadialVent® cooling system that decreases heat dissipation as well as distortion cause by thermal discharge. This improves the subwoofer's ability to perform at higher power handling levels while still producing quality bass output. G3 series subwoofers are versatile, dependable, loud, and affordable making them an easy selection for any car audio system.

  • 12" Dual 4 Ohm G3 Series Subwoofer
  • Power Handling:
    • RMS: 375 watts
  • Impedance: Dual 4 Ohm
  • Co-polymer woofer cone
  • Foam woofer surround
  • SPS™ (Soft Part System) technology allows for cone assembly removal
  • SureSet™ impedance selection provides simple impedance selection as well as overdrive protection
  • Rigid cast aluminum customizable chassis
  • RadialVent® cooling directs airflow around the voice coil for increased power handling
  • 2-1/2" 4-Layer Voice Coils
  • 2-3/4" peak to peak excursion for devastatingly accurate, deep bass output from small sealed enclosures
  • Rugged input terminals accept bare 8 gauge wire or pin connectors
  • Integral sealing gaskets ensure tight seals for any mounting configuration
  • Compatible with the GTR12 tunable radiator for added bass
  • SPL Sensitivity: 92.4dB
  • Xmax: 14.5mm
  • Frequency response: 20-350 Hz
  • Mounting Depth: 6-9/16"
  • Cutout Dimensions: 11-3/16"
  • 1-year Manufacturer's warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
G3 (Boston Acoustics)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
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.
375 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.
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).
20 - 350 Hz
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".
92.4 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.
14.5 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.
Copolymer
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.
Foam
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.
1.0 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.
1.0 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.
2.0 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.
2.0 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.
6-9/16"
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.
11-3/16"
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

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
89%
4 Star
11%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.8
Features
5.0
Design
4.8
Usability
5.0
The boss

New Jersey

Overall
Durability
Value
Features
Design
Usability
Great group of people to deal with.

August 3, 2012

In the past I have waisted a lot of money and time with other products from different company's and finally I have found the greatest product in the market.

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TOMMY

ROSWELL,NM

Overall
Durability
Value
Features
Design
Usability
UPDATE

December 23, 2011

This is my second review and one burnt out, of my twog3s, good thing their is a recone kit.

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stretch

west plains MO

Overall
Durability
Value
Features
Design
Usability
AMAZING

March 9, 2011

I have the single 4 ohm model bridged off a Rockford P400 and it sounds amazing!!!!!! I did have a sealed 1 cu ft box but then I built a ported 2 cu ft box tuned 35 hz and oh my god its awesome...raw clean power, it shakes my whole truck and any one elses vehicles around me...I have been flipped off a lot at stop lights lol this sub is very underated. Its a sad thing that not too many ppl know of Boston Acoustics cuz they really do make quality products. This sub is a beast. LOTS of excursion. The fact that I can take it apart and replace the sps is very cool. Also the fuses are a very smart idea cuz they protect the sub. I would highly recomend this or anything boston acoustics to anyone

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tommy

Roswell,New Mexico CTR

Overall
Durability
Value
Features
Design
Usability
great subwoofer

October 28, 2010

I have two pushed buy a punch 1000,and they hit so hard they make my eyez vibe when I drive. Sick system, they could handle more power but I'm about to put a bigger amp, love this sub. Good for showing off.

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James

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability
Boston Acoustics G312-44 Rules

May 18, 2010

I have owned the Boston Acoustics G312-44 for 6 months now. I tried several other subs including Orion, JBL, Polk and just couldn't get the sound that I was happy with. If you like tight, clean, and powerful base then you can't beat the Boston subs. They have the sound of a much more expensive sub and they sound AWESOME!!!!! I have been a drummer for 30 yrs and have a very strong need for clean and clear music so I could hear all the instruments. The sub gives you the depth and drama of the song, so it is a very important part of the musical experience. Boston subs will give you the depth and drama without destroying your bank account.

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Superman

Atlantic City, NJ

Overall
Durability
Value
Features
Design
Usability
Great sub...

May 10, 2010

For the money, these are some of the best sounding subs I've ever owned. I have 2 of these in 2 different enclosures, one ported, one sealed, running at a cool 8 ohms powered with an old Phoenix Gold ZX600 amp, EQ215 equalizer and Harrison subsonic filter, for even response curve. The subsonic filter keeps the ported box from unloading while the sealed sub reaches down WAY low. Sounds wonderful.

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Jake

Bluffton, MN

Overall
Durability
Value
Features
Design
Usability
Awesome Sub!

February 14, 2010

This sub is way better than the Alpine Type R. It seems so much more responsive and clean too. I have 400 rms running to this sub in a 1.5 ported box. The box is a little small but sounds great. The excursion is ridiculous too. Nothing but clean, detailed, accurate bass with this sub. If you are considering this sub, BUY IT!! You won't be disappointed. Give it about 2 weeks of break in period and it pounds out the lows like crazy. The highs hit really good too. Definitely best sub i have ever had. Its really a great deal and it even has a re-cone kit too.

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Luke

Minneapolis, MN

Overall
Durability
Value
Features
Design
Usability
Nice Sub

December 29, 2009

I built a 3/4 inch mdf 1 cubic foot enclosure built to the exact specs. I am powering this with a kicker zx 400.1 and it handles the power flawlessly. It sounds very smooth. Its not broken in yet so it will get better. Definitely built well. This sub would sound way better ported, so port it if you get it. I would recommend this sub if you have a smaller car or an suv. Hope this helps make up your mind if you are looking to buy this.

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jman

abq, nm

Overall
Durability
Value
Features
Design
Usability
BOOM

August 26, 2009

have 1 of these in my 2004 eclipse hatchback in a sealed box with an alpine mrp500 amp. it POUNDS! and sounds soooo clean. people scope my trunk and think nothing of it but trust me that little sub is a Deceptacon. i keep it on negative 24 on the subwoofer. when i first turned it on it was on zero and i couldn't even hear anything it was soooo loud and shook me all over in a SEALED box definitely recommend

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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

12" SingleHatchback Style Small Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $42.95

12" Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Sealed Enclosure Lined with Premium Carpeted Finish

Your Price $47.95

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 $44.95

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

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $14.99

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

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Boston Acoustics G312-44 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Boston Acoustics G312-44 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Boston Acoustics G312-44 Subwoofers

Mono Amp

4 Channel Amp

4 Boston Acoustics G312-44 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

G312-44

UPC

690283458621

Weight

24.00lbs

Internal SKU

g31244

Internal Product ID

18535

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: Boston Acoustics G312-44