This is a nice quality Aiwa TS-W35U Subwoofer. It features an impedance of 8 ohms.
The Arachnid series SW-12SE subwoofer by Soundstream offers great sound at an affordable price. This Dual 4-Ohm woofer puts out 250 Watts RMS Power and has a mounting depth of 5.125".
This 10" subwoofer kicks out robust bass for a thick, thunderous sound. The in-wall design utilizes the entire wall as a cabinet without sacrificing floor space. Product Features ?10" passive subwoofer adds bass impact and excitement to your home audio ?Supplies 150 watts peak power; 5 watts - 150 watts RMS ?In-wall mounting creates outstanding sound quality in rooms where space is...
Injection-molded TPX Honeycomb cone woofer Multi-roll NBR Surround Progressive roll spider with woven tinsel leads Vented pole piece for heat dissipation Aluminum voice coil former Stamped steel basket 2" High-temperature aluminum voice coil 100oz. Double stacked strontium ferrite magnet structure Frequency response: 30-300 Hz Sensitivity: 85 dB Nickel plated push terminals