KeySpecificati***300mm(12")Low-frequencytransducer400-Watts-RMShigh-output,high-efficiencyamplifierforthunderousdeep-bassextensionwithoutbreakupordistortion,evenathighlisteninglevelsHigh-qualitycabinetBeautifullypolishedhigh-gloss-ebonywoodpanelsSwitchableLFEinputAdjustablelow-passcrossoverPhaseswitchallowssubwoofertooperatewithnormalorreversepolaritySubwoofer-levelcontroltoconvenientlyadjusttherelativevolumeleveloflowfrequenciesTuned-portbassenclosureextendslow-frequencyresp***eandincreasesoverallefficiencyofthebassdriver,reducingdistortionandimprovingitspower-handlingcapacityMetalspikesandcoastersaresuppliedGeneralFrequencyResp***e25Hz–150HzAmplifierPower(RMS)400WattsPeakDynamicPower700WattsDriver300mmCrossoverFrequencies50Hz–150Hz;24dB/oct***e,continuouslyadjustableDimensi***(HxWxD)487mmx375mmx425mmWeightperSpeaker25.8kg)