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Boston Acoustics SPG555-4

13" Single 4 ohm Oval SPG Series Car Subwoofer

Discontinued
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This item has been discontinued

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Revolutionary

This is the word carefully chosen by Boston Acoustics to described the SPG555 reference subwoofer. With its neodymium structure, the powerful subwoofer is a lot lighter than its closest subwoofers of similar designs. Boston Acoustics unique Removable Voice Coil (RVC™) system and Soft Part System (SPS™) help make this subwoofer an advanced and powerful subwoofer. The oval design is made to push more air in a more effective manner. The SPG555 sub also works in enclosures with a volume as small a 1 cubic foot! This is truly a revolutionary subwoofer with a Boston Acoustics reputation.

Product Specifications:
  • 13" Single 4 ohm SPG Series Oval Subwoofer
  • Power Handling:
    • RMS: 1000 watts
  • Impedance: Single 4 Ohm
  • Polypropylene cone woofer
  • Foam woofer surround
  • RadialVent® cooling directs airflow around the voice coil for increased power handling
  • RVC™ (Removable Voice Coil) allows coil to be exchanged without removing the woofer from the enclosure
  • SPS™ (Soft Part System) technology allows for cone assembly removal
  • SPG555 can be field-stripped and custom painted, powder-coated, or plated for a custom look
  • Simplified mounting with the integral sealing gaskets
  • 3-1/2" Voice coil
  • 3-3/4" peak to peak excursion for devastatingly accurate, deep bass output from small sealed enclosures
  • 555 cm2 of surface area
  • Compatible with the SPG-TR passive radiator
  • Frequency response: 20-350 Hz
  • Sensitivity: 87.7dB
  • Xmax: 22mm
  • Mounting Depth: 8-1/4"
  • Cutout Dimensions: 13-3/16" x 10-7/16"
  • 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.
SPG
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
13"
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.
1000 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.
2 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".
87.7 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.
22 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.

Oval
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.
Polypropylene
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.
Yes (Accessory available and sold separately)

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.
2.6 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.
8-3/16"
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.
13-3/16" x 10-7/16""
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
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.5
Features
4.8
Design
4.8
Usability
4.8
Billy Bob

Washington

Overall
Durability
Value
Features
Design
Usability
13" Oval Boston Acoustic sub

November 28, 2012

This is an excellent sounding sub, don't know why Boston stopped making it, I would like to get a second one.

0 of 0 found this helpful

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freddie

kodak, TN

Overall
Durability
Value
Features
Design
Usability
these subs will amaze you

September 21, 2012

They are so clean on sound and the bass is tight and accurate i would recomend these to anybody that is in the market for subs they are a little pricey but worth it. A friend has two in his truck and it is so loud.

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Christopher

Australia

Overall
Durability
Value
Features
Design
Usability
EXCELLENT!

November 3, 2011

My goal is to reproduce an audiophile sound close to a home system. I have the sub running with no cut off and firing through the rear arm rest when down, staight into the cabin. The set up with no cut off gives me the fullness that was lacking in the lower midrange with ample thump and a very clean, balanced and distortion free sound that sounds like a quality home set up. Highly recomended!

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sparticus

anytown, USA

Overall
Durability
Value
Features
Design
Usability
Nice sub

December 4, 2009

I am currently auditioning this sub (so the "ownership" category is a bit subjective). My local dealer is a really nice guy with loads of knowledge in the field of car audio. I stopped in there the other day inquiring about a new sub(s) for my car. I recently bought a GT-24 amp from him, and my (2) 10" PG competition subs just didn't seem to be cutting it. He suggested the 555 in a Boston "GT Tuned" box. I must say that this one sub hits way harder than my 2 10's, and still remains "tight and clean" even at high volume. I haven't tuned the deck or the amp. Both are at "flat" settings. I can only imagine what it will sound like once I tell him that I'll be keeping it, and we get a chance to dial it in. So, in conclusion, I can only say that I am really impressed with this sub after roughly 4 hrs. use. As a side note: I'm 40 years old. I am in the home A/V business, and have been for over 10 years. That being said, I'm not a kid just looking for "loud bass". I want it to sound like my home system does, and that's no easy task. This may not matter to many folks, but at home I'm running a Pioneer Elite SC-07 receiver with Klipch Reference speakers all around. That translates to: Front L/R- 7 series, each containing (2) 10" drivers Center- 7 series containing (2) 8" drivers Rears- 81 series containing (2) 8" drivers Subs- (2) Reference 12" w/passive radiators and huge power. Look, if you're in the market for subs... or amps for that matter, BA should be at very least a strong contender. My ratings are based on the fact that I still have to audition the JL 12W-7 Nuff said.

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Accessory Tools and Products

Accessories added

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

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $119.99

Dynamat Sound Dampening Bulk Kit

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

Your Price $159.95

Stinger Sound Dampening Bulk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

Your Price $99.99

20 oz. Bag of Poly-Fil

Polyester fiber fiberfill adds better bass to your system.

Your Price $5.99

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 $1.99

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

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 SPG555-4 Subwoofer

Mono Amp

2 Boston Acoustics SPG555-4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

3 Boston Acoustics SPG555-4 Subwoofers

4 Channel Amp

4 Boston Acoustics SPG555-4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp

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Product Summary

Manufacturer

Model Number

SPG555-4

UPC

690283383206

Weight

29.80lbs

Internal SKU

spg5554

Internal Product ID

15774

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 SPG555-4