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Boston Acoustics G215-4

15" Single 4 ohm G2 Series Car Subwoofer

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• 300W RMS
• RadialVent® Cooling System
• SureSet™ Impedance Selection
• Integral Sealing Gaskets
• Compatible with the GTR12 for Added Bass
• Mounting Depth: 7-1/16"

Learn more about the g2154

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This item has been discontinued

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Product Highlights


• 300W RMS
• RadialVent® Cooling System
• SureSet™ Impedance Selection
• Integral Sealing Gaskets
• Compatible with the GTR12 for Added Bass
• Mounting Depth: 7-1/16"

Description


The G2 Boston Acoustics Experience

G215-4 subwoofers are the best solution when looking for a factory replacement subwoower that will provide, clean, crisp, and quality bass for any car audio system. So if you are looking to replace your busted factory sub or just want to add some bass to your vehicle these woofers are a great option.

Boston Acoustics has built from their previous subwoofer to bring you their new G2 series subwoofers. These subwoofer are not only an improvement but stay true to the quality and performance that comes with Boston Acoustics products. Available in a 10", 12", and 15" size woofer along with the option of either a single 4 ohm voice coil or dual 4 ohm voice coil for multiple wiring options that better suits your personal needs. All G2 series subwoofers are equipped with Boston Acoustics specific technologies such as SureSet™ impedance selection that makes wiring easy and accurate as well as adds protection from overdrive to the voice-coil. G2 subs also feature 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. All G2 series subwoofers feature a co-polymer woofer cone and foam surround for rigidity and increased excursion. So if you are looking for a subwoofer that can deliver deep bass, high sensitivity and long excursion, then the G2 series subwoofers are the perfect match at a competitive price.

  • 15" Single 4 Ohm G2 Series Subwoofer
  • Power Handling:
    • RMS: 300 watts
  • Impedance: Single 4 Ohm
  • Co-polymer woofer cone
  • Foam woofer surround
  • SureSet™ impedance selection provides simple impedance selection as well as overdrive protection
  • Rigid cast aluminum chassis
  • RadialVent® cooling directs airflow around the voice coil for increased power handling
  • 2-1/4" 4-Layer Voice Coils
  • 2" 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
  • SPL Sensitivity: 90.2dB
  • Xmax: 12.5mm
  • Frequency response: 18-350 Hz
  • Mounting Depth: 7-1/16"
  • Cutout Dimensions: 13-15/16"
  • 1-year Manufacturer's warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Boston Acoustics G215-4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Boston Acoustics G215-4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Boston Acoustics G215-4 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Boston Acoustics G215-4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
G2 Series
Subwoofer Size
15"
RMS Power Handling
300 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Frequency Response
18 - 350 Hz
Sensitivity
90.2 dB
Xmax (millimeters)
12.5 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Silver
Woofer Composition
Copolymer
Woofer Surround
Foam
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
2.0 cubic feet
Maximum Sealed Box Volume
2.0 cubic feet
Minimum Ported Box Volume
3.50 cubic feet
Maximum Ported Box Volume
3.50 cubic feet
Top-Mount Depth (Mounting Depth)
7-1/16"
Cutout Diameter
13-15/16"
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:

G215-4

Weight:

18.50lbs

Internal SKU:

g2154

Internal Product ID:

38782

Product and How-to Videos


Customer Ratings & Reviews


Boston Acoustics G215-4 thumbnail image

5 star
67%
4 star
33%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
5
Features
4.7
Design
4.9
Usability
4.2

Customer Reviews

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quality sound awesome value

I did 3 Boston g2 15 s in my dodge RAM. Excellent mix of spl and sq . Been installing for 20 years now. I am sad to see Boston leave the car audio market . I've been a fan since beginning. I guess plastic parts and shinny prices are more important that good speakers :(

By anvil on February 5, 2013

18 found this helpful


I liked it

I bought this sub off here and it shipped fast (as usual) great deal. I found that it is really easy to blow the fuses though. I have g1's and don't blow fuses on those. But if you have it wired to under 200 it still really pounds. Good in a large 3 cubic foot ported box .

By Corey on February 19, 2013

16 found this helpful


Outstanding Subwoofer

I decided to purchase a pair of these subs due to the fact that while on clearance, they were one of the most inexpensive 15" subwoofers I recall coming across from a reputable company. I had read a review on a forum that was very negative that almost detoured me from purchasing. Having used several Boston subs, I found this surprising. The claim was that the woofer did not perform well in a 1.5 cu ft box.

Upon receiving the woofers, I did in fact install them in a 1.5 cu ft / sealed sub enclosure. The review was accurate. The subs lacked low end and needed a ton of power to get loud. The subs also do require a break in period. They got better after about 4 hours of play, but still pretty lackluster all in all. I was not sure that half a cubic foot per chamber would make much of a difference. Even looking at my enclosure design software, it showed little difference. Regardless I decided to build a new sealed box anyways.

The subs are running off a Rockford Power series 1000.1bdcp. In a 2 cu ft enclosure, these subs get impressively loud and sound exceptional. Sound quality (my own subjective definition) at the $300 price point is well above average. The competition gets pretty elite at 300 bucks per sub. When you factor in the output available with very moderate power levels, the sub sets itself apart from almost any other driver at that price point.. They are also very efficient in the 2 cu ft / chamber sealed box and I would say a 600 watt amp is more than adequate. I dropped the low end output on my Pioneer DEX-P99 to -9db per sub from where they were at in the 1.5 cu ft sealed box.

Some Products I have used in the past:
JL 13w7
JL 12w7
JL 10w7
JBL W10gti
JBL GTO1514d
JBL GTO804
DD1508
Boston Acoustics G510
Boston Acoustics G112
Boston Acoustics G212



The boston G215 is tied for 1st with the JBL w10GTI in my opinion. The JBL is the best sound quality sub I have heard. The JBL is not very efficient and requires a ton of power to get the volume I desire. The Bostons fulfill that thirst for output while the sacrifice in sound quality is there, its well worth the trade for my setup.

The only negatives are that the speaker terminals seem like they are upside down and can be tight to fit your fingers in to press depending on the length of speaker wire your dealing with. The other is that these subs want 2 cu. ft or more sealed. Many 15's on the market can work in less space, these lose a lot of performance from even a slightly smaller enclosure. The included screws have a very small head and strip easily. For these reasons 3 stars on ease of use.

If you have the room for a 4 cu ft enclosure and want a pair of great sound quality subs that can bounce large items off your roof at will, these should put a smile on your face.

By carter1010 on August 30, 2012

15 found this helpful


Why would you not buy this?

Ok, these are simple, require very little power, high sound quality I cannot think why you would not buy this sub. Boston knowledge behind sound.

By Dr. House on October 7, 2012

14 found this helpful


Great woofers

Im "Anal" about my sound. When it comes to Trance, Slope Hiphop, Post-Hardcore Rock (repetitive double kicks) You need a responsive woofer. Most run over towards 10's for response but i like the Deep thump that comes from a 15" woofer cone. The G2s are made with light weight materials, perfect motor for moving air, and built phenominal. I couldve spent 2-3 hundred dollars on a woofer from some one else but why do that when Boston makes car audio? They kick hard, and thump out some serious spl from sealed enclosures. I'll probably buy another, and keep this for life..

By parker on July 29, 2012

14 found this helpful


Sweet Deal

Sad to see Boston stop car audio. Is great woofer.I did 3 in a wall in my ram. Excellent sound quality!

By James on September 10, 2013

12 found this helpful




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