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 RV C ™...
Dimensions Side View Cut-out Top View Subwoofer Parts ™ (Soft Part System) Mounting Gasket SPG555 Basket, Motor Structure, and Heat Sink ™ ™ Gasket (Removable Voice Coil) Hardware Mounting Screw Long SPS ™ Screw Short SPS ™ Screw ™ Screw x 10...
Enclosure Designs Sealed Enclosure Sealed Enclosure Explanation A sealed 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.
Sound Quality Ported Enclosure 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.
(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.
(Soft Part System) ™ Interchangeable SPS ™ The SPG555 features a removable SPS ™ (Soft Part System) that contains the cone, surround, and spider built into one frame. In the event that the cone, surround, or spider becomes damaged, it is easily swapped out with a new one.
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