Sealed subwoofers keep backward waves trapped within the speaker enclosure and therefore transmit, in general, a cleaner and crisper sound. If you’re looking to recreate the live performance of an orchestra accurately, then you’re probably looking for the best audiophile subwoofer under $1000 – that’s the long and the short of it. Don’t expect a subwoofer that can reproduce the bangs and spills of an action movie to be able to deliver the precise sounds of an orchestra string section.