Raybu1960
CarAudio.com Newbie
I found an optimus subwoofer tube with a 120 hz -250 hz switch and a bass level control operated by screwdriver. No model #, no information on wattage or impedance. Can anyone help me identify this sub and provide information on it. Any chance I could use it as as passive sub with a home theater receiver. I have a 140 watt per channel 4 -16 ohm, with two line level.rca sub outputs .