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Boston Acoustics SPG555.

6½" copolymer cone woofer with TwinStage™ heatsink
Woofer's neodymium motor structure offers extraordinary power-to-weight ratio
VariMount™ adaptor rings enable the SR60 woofer to fit into virtually any factory 6½-inch location.
Type-S1 1" Kortec® dome tweeters
Quick-fit mounting cup simplifies tweeter installation
Separable and dockable model-specific crossovers

Nominal Impedance

4 ohm

Recommended Amplifier Power

85watts RMS-250 watts peak

Mounting Depth

2-7/16" (62.0mm)

Nominal Size

6½-inch

Sensitivity [1 watt (2.83v) at 1m]

90dB

Frequency Response (±3dB in car)

45Hz-22kHz

System Type

2-way

Boston Acoustics