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Designed to work perfectly with the the Boston SPG555 | For The Recommended | |||||
Mode Type | Tuning Freq. | Small Tuning Mass | Large Tuning Mass | |||
subwoofer, the | ||||||
Tuning Mode 1: | 45Hz | X | X | |||
a 1.0Ft3 enclosure and delivers low bass similar to a | ||||||
Tuning Mode 2: | 35Hz | 1 | 1 | |||
ported enclosure while maintaining the transient | ||||||
Tuning Mode 3: | 30Hz | X | 2 | |||
response and compact size of a sealed enclosure. | ||||||
Key: X = No Mass Used, 1 = One Mass Used, 2 = Two Mass Used |
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Provided tuning masses allow you to customize the |
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response of the | Changing The Tuning On The | |||||
listening preference. |
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| 1.Remove the six screws υ. Lift the | |||
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| dustcap off of the | |||
Nominal Size: | 555cm2 |
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| 2.On the bottom side of the dustcap | ||
Mounting Cutout Diameter: | Use Provided Cutout Template | ϖ |
| ω, remove the center screw, lock | ||
Mounting Depth: | 4" (102mm) |
| washer, and washer that hold the | |||
| mass to the dustcap. | |||||
(includes required clearance behind |
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Recommended TunableRadiator™ |
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| 3.Select the desired tuning mode by | |||
Enclosure Volume*: | 1.0 ft3 (28.3L) |
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| placing the correct combination of | ||
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| mass, foam side down, on the | ||
Use | ω |
| center shaft. (use the tuning guide | |||
| Setting Matrix Below |
| located above) | |||
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*Enclosure requires SPG555 (2Ω or 4Ω) and volume includes basket displacement for both the |
| 4.Install the center screw, lock | ||||
SPG555 subwoofer and the |
| washer, and washer and tighten. |
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Model: |
| Tuning |
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| using all six screws. |
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Tuning Mode 1: |
| 45Hz | 42Hz@0.7 |
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| Warning: The dustcap is a structural part | ||||
Tuning Mode 2*: |
| 35Hz | 34Hz@1.0 |
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| of the | ||||
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| before use. |
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Tuning Mode 3: |
| 30Hz | 30Hz@1.2 |
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*Factory Tuning Mode |
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| υ | 90º | 1.The handle is held in place by two | ||||
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SPG555 / | screws (included in the hardware | ||||||||||
45º | |||||||||||
kit). The handle can be positioned | |||||||||||
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| 0º | eight different ways υ. | ||||
| D | ϖ | 2.Line up the handle with two of the | ||||||||
W |
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| Enclosure Response |
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| six | screw | holes on | the dustcap. | ||||
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| Using the | provided | 2.5mm tool, | |||
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| hand tighten the screws ϖ. The | |||||
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| specific orientation of the handle | |||||
H |
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| will | not | effect | performance, | ||
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| however, to ensure proper tuning, | |||||
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| must be installed prior to using the | |||||
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| Warning: Choose the position of the handle wisely. Installing the screws into the dustcap will mar the area around | |||||||
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| 5 Hz 10 | 50 | 100 | |||||||
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| where the screw is installed. Although not visible with the handle installed in the original position, if the handle is | |||||||||
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| moved, you will be able to see the enlarged screw holes from the previous install position. |
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Model: |
| SPG555 w/ |
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| Tuning Hardware | ||||||
H = Height: |
| 13" (33.0cm) |
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W = Width: |
| 13" (33.0cm) |
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| Screw* |
| Small Tuning Mass* | ||||
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| Lock Washer* |
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D = Depth: |
| 10.5" (26.7cm) |
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| Washer* |
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Gross Volume: |
| 1.0 Ft3 (28.3L) |
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| 2 x Large Tuning Mass | |||||
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Use |
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| (1 installed* / 1 in hardware pack) | |||||||
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| Setting Matrix Above |
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Enclosure dimensions are internal and include displacement for both SPG555 & | Boston Acoustics, Inc. 300 Jubilee Drive, | Peabody, MA | 01960 USA | ||||||||
The enclosure shape is an example and these dimensions can be modified provided the exact | T: 978.538.5000 | F: 978.538.5100 W: bostonacoustics.com |
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internal volume is retained and there is adequate clearance behind the SPG555 and the | |||||||||||
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| logo are registered trademarks of Boston Acoustics, Inc. Specifications are subject to change without | |||||||||
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| notice. All rights reserved. Covered by patents issued and/or pending. |
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| © 2008 Boston Acoustics, Inc. |
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