Boston Acoustics SPG555 Manual de usuario

Index

Introduction Page 3

Dimensions Page 4

•Woofer Dimensions

•Cut Out Dimensions

Specifications Page 5

•General Specifications

•T/S Parameters

Sealed Enclosure Page 6

•Enclosure Overview

•Enclosure Specs

•Enclosure Example

Sound Quality Ported Enclosure Page 7

•Enclosure Overview

•Enclosure Specs

•Enclosure Example

High Output Ported Enclosure Page 8

•Enclosure Overview

•Enclosure Specs

•Enclosure Example

RVC™(Removable Voice Coil) Page 9

•Technology Overview

•Removal Instructions

•Installation Instructions

SPS™(Soft Part System) Page 11

• Technology Overview

•Removal Instructions

•Installation Instructions

Parts and Hardware Listing Page 13

•Subwoofer Parts and Hardware

Contact Information Page 14

•Contacting Boston 2

Introduction

Thank you for purchasing the Boston Acoustics SPG555. Designed from the ground up at our engineering and

production facility in Peabody, Massachusetts, the SPG555 utilizes many innovations and industry firsts. The SPG555

features our patented-pending 3.5-inch RVC™(Removable Voice Coil) allowing you to either change the impedance of the

subwoofer or repair a defective voice coil; without having to remove the SPG555 from its enclosure! By removing six

screws, you can simply slide out the RVC™and replace it with a new one. In addition, the SPG555 features our SPS™(Soft

Part System) allowing the user to replace the entire cone/surround/spider assembly should they ever become damaged.

The SPG555 incorporates a unique cone profile. The race track design allows the SPG555 to fit where other woofers

cannot, giving you the ability to install the SPG555 in an area that would normally would limit you to using a 10-inch

subwoofer. The area of the cone, 555cm2,is larger than a standard 12-inch subwoofer—simply put, greater cone area for

greater output. A 3.5-inch diameter voice coil combined with Boston Acoustics' patented RadialVent®cooling allow the

SPG555 to handle an amazing 1000 watts RMS. Generally, conventional high output subwoofers rely on massive

magnets that dramatically increase their weight. The SPG555 uses a powerful neodymium motor structure that is

significantly lighter than ferrite motor structures, keeping the total weight of the SPG555 to only 26 lbs. Like the highly

acclaimed Boston Acoustics G5 line of subwoofers, the SPG555 can be completely disassembled to allow customization.

You can paint, powder-coat, or chrome the SPG555's basket and heatsink to customize the appearance of the SPG555 for

acustom installation.

Take a few minutes and familiarize yourself with the contents of this manual. In addition to basic set-up requirements for

the SPG555, you will also find several enclosure designs that allow you to tailor the performance of it to your specific

design goals. Whether you are looking to build a vehicle for accurate reproduction or the production of mind-blowing

bass, the SPG555 is up to the task. Attributes of each enclosure are highlighted on each design page and all three designs

should be considered before making a decision on which one to build as the enclosure design will radically effect the end

result. Regardless of enclosure chosen, the SPG555 truly defines reference level performance.

Dimensions

”

302mm

”

362mm

”

210mm

”

38mm

”

162mm

Cut-out

335mm

”

265mm R5.22”

R132.5mm

”

Top View

Side View

Specifications

General Specifications

Model: SPG555-4 SPG555-2

Nominal SD: 555cm2555cm2

RMS Power Handling: 1000w 1000w

Impedance: 4

Ω

Frequency Response (±3dB in car): 20-350Hz 20-350Hz

Weight: 26 Lbs. 26 Lbs.

SPG555 Thiele-Small Parameters

Model: SPG555-4 SPG555-2

Fs (Hz): 31.90 29.68

Re (Ohms): 3.15 1.68

Qms: 11.66 11.70

Qes: 0.86 0.67

Qts: 0.80 0.63

Vas (Liters): 39.77 44.40

Mms (Grams): 276.7 286.20

Cms (µM/Newton): 89.9 99.9

Xmax (Mm): 22 22

Xmech (Mm): 49 49

Sd (CM 2): 555 555

Bl (Tesla-M): 14.27 11.58

SPL Eff (dB @ 1w/1m): 83.6 84.2

SPL Sen (dB @ 2.83v): 87.7 91.0

Sealed Enclosure

Sealed Enclosure Explanation

Asealed enclosure is the best option if sound quality is of primary concern. It will offer the best overall response across

the low frequency audio spectrum, great transient response, and will allow for the most seamless integration between

the subwoofer system and front speakers. It is also half the size of the sound quality ported design minimizing the space

that needs to be dedicated to the subwoofer enclosure.

Sealed Enclosure Specifications

Recommended Enclosure Volume*: 1.0 ft3(28.3L)

Q-Tune™† (Highpass and Q Setting): 25Hz @ 0.707

Sealed Enclosure Example

Gross Volume: 1.0 ft3(28.3L)

Internal Height (H): 10 1⁄2"(26.7cm)

Internal Width (W): 13" (33.0cm)

Internal Depth (D): 13" (33.0cm)

Recommended Fill: 1Lbs. of Polyfil

03-

5001 0

05 00

01 0

In-Car Response w/ Q-Tune

™

Enclosure Response

H D

Front View Top View

*All enclosure dimensions are internal and include basket displacement

The above enclosure shape is an example and these dimensions can be

modified provided that the exact internal volume is retained

3⁄4-inch thick M.D.F.is recommended as a minimum

†Q-Tune™is a feature found on Boston GT Amplifiers

Sound Quality Ported Enclosure Explanation

The use of low tuning allows the SPG555 to deliver much stronger low bass energy when compared to the sealed

enclosure. Use of a smaller volume combined with low tuning allows the ported sound quality enclosure to produce a

relatively flat response down to 30Hz while delivering solid impact at high output levels.

Sound Quality Ported Enclosure Specifications

Recommended Enclosure Volume*: 2.1 ft3(59.4L)

Tuning Frequency: 33Hz

Q-Tune™† (Highpass and Q Setting): 31Hz @ 0.9

Sound Quality Ported Enclosure

Sound Quality Ported Enclosure Example

Gross Volume: 2.1 ft3(59.4L)

Internal Height (H): 14" (35.6cm)

Internal Width (W): 18" (45.7cm)

Internal Depth (D): 14" (35.6cm)

Slot Port Opening: 1 1⁄4x14” (3.2 x 35.6cm)

Port Length: 22” (55.9cm)

-6

-12

-18

-24

-30

-36

5 Hz 10 50 100 500 1000 2000

In-Car Response w/ Q-Tune

™

Enclosure Response

H D

Front View Top View

Note: If a rectangle port cannot be used, two 3” (77mm) round ports,

16” (406mm) long may be substituted.

*All enclosure dimensions are internal and include basket and port displacement

The above enclosure shape is an example and these dimensions can be modified

provided that the exact internal volume is retained

3⁄4-inch thick M.D.F. is recommended as a minimum

†Q-Tune™is a feature found on Boston GT Amplifiers

High Output Ported Enclosure

High Output Ported Enclosure Explanation

As the name suggests, the high output ported enclosure will play the loudest of the three designs. Its large internal

volume combined with large port area delivers great efficiency for very high output. Tuning is higher than the Sound

quality enclosure bringing the peak efficiency point of the enclosure much closer to average vehicle resonance but is still

tuned low enough for good musical reproduction.

High Output Ported Enclosure Specifications

Recommended Enclosure Volume*: 2.5 ft3(70.8L)

Tuning Frequency: 38Hz

Q-Tune™†:(Highpass and Q Setting) 36Hz @ 1.2

High Output Ported Enclosure Example

Gross Volume: 2.5 ft3(70.8L)

Internal Height (H): 14" (35.6cm)

Internal Width (W): 22" (55.9cm)

Internal Depth (D): 14" (36.8cm)

Slot Port Opening (PW): 1 3⁄4x14” (4.5 x 35.5cm)

Port Length (PL): 19” (48.3cm)

*All enclosure dimensions are internal and include basket and port displacement

The above enclosure shape is an example and these dimensions can be

modified provided that the exact internal volume is retained

3⁄4-inch thick M.D.F. is recommended as a minimum

†Q-Tune™is a feature found on Boston GT Amplifiers

Note: If a rectangle port cannot be used, two 3” (77mm) round ports,

10” (254mm) long may be substituted.

-6

-12

-18

-24

-30

-36

5 Hz 10 50 100 500 1000 2000

In-Car Response w/ Q-Tune

™

Enclosure Response

H D

Front View Top View

RVC™(Removable Voice Coil)

Removable Voice Coil

The SPG555 is the first woofer ever that allows the voice coil to be exchanged without having to remove the woofer from

the enclosure. This unique feature allows you to change the impedance of the woofer or repair a damaged voice coil, not

just easily,but quickly.

Removing The RVC™

1) The RVC™is held in place with six screws. Using the provided tool (2.5mm allen hex), remove the six screws around the

outside of the RVC™u.

2) Once the screws are removed, pull up on the handle and the RVC™will slide out v.

Note: If the previous RVC™was damaged, make sure that the gap is clear of all debris before installing the new RVC™.

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