This is a nice quality Aiwa TS-W35U Subwoofer. It features an impedance of 8 ohms.
Introducing new Jantzen C-Coil inductors, specially engineered for bass, sub-woofer and amplifiers. Power handling is massive at 700 watts RMS, making them perfect for high power passive crossovers.
Frequency response 25Hz-250kHz . Reversible top gasket. Large copper-wound Kapton voice coil. Auto tension push terminals. Flat Conex spider with loop stitched tinsel leads
Orion Cobalt Series 10 Inch 400-Watt Subwoofer - ORN CO104SFEATURES: Frequency response 39Hz-250kHz Reversible top gasket Large copper-wound Kapton voice coil Autotension push terminals Flat Conex spider with loop stitched tinsel leads Orion Cobalt Series 10 Inch 400-Watt Subwoofer - ORN CO104S