Which subwoofer is better?

BIC, in general has much better speakers than SONY. I would be highly surprised if any comparably priced SONY speaker can out-perform a BIC in sound quality. Yes, the SONY might give you slightly deeper bass, but it will probably sound sloppy like the rest of their subwoofers. BIC subwoofers have a reputation for being more solid, providing crisp bass that can help add a lot more to your audio.

Sony: Looser slightly deeper base with slower response. Bigger drivers take more power to move. They move more slowly by virtue of larger size. They recover more slowly, and so persistent base tends to get a bit muddy. I've always been a proponent of smaller drivers in a well-made tuned enclosure. Of the 2: My choice would be the BIC: Tighter , faster base but with slightly higher frequency capability. And, at the cost of slightly less base response. Bigger driver, bigger base. Smaller driver, tighter, more accurate base. Cabinet design does play a bit in to the quality of sound reproduction, and this must be personally reviewed by the listener.

dear freind, subwoofer is main part of subwoofer and above mention sony is best in this categroy. plz go for sony, u surely happy with perfomance, service even return on price.

I personally like the sony, but i've never used the other one so idk what the better deal would be.

well, lets see, bigger, stronger, and its by sony.. ya, the first one.