Overview You must have JavaScript enabled and Flash 9.0.115 to see this content. Boston Acoustics SPG555. 6½" copolymer cone woofer with butyl rubber surround Woofer's neodymium motor structure offers extraordinary power-to-weight ratio 1" Kortec® dome tweeters Contoured tweeter plane greatly improves on- and off-axis tweeter response Model Specific integrated muti-element crossovers VariMount™ adaptor rings enable the SR65 woofer to fit into virtually any factory 6½-inch location. Specifications Nominal Impedance 4 ohm Recommended Amplifier Power 75watts RMS-200 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) 50Hz-20kHz System Type 2-way Enclosure Type Q-Tune™ Setting Tuning Frequency Top Depth Bottom Depth
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