How deep do they go?
Of the 262 here with a figure quoted, most are rated between 16Hz and 35Hz, with a median of 25Hz. Those are the maker's own figures and the measuring conditions behind them vary, so treat them as a ranking rather than a promise. Room gain usually adds output below 50Hz that no specification sheet shows.
What do they cost?
Most sit between $349 and $3,000, with a median of $962 and a full range of $149 to $21,995. These are the current asking prices we hold, not sale prices, and they move - check the retailer before deciding.
How much amplifier power is inside?
The built-in amplification is mostly 110 to 1,000 watts, median 300 watts. Makers quote this inconsistently, some RMS and some peak, so compare it alongside the driver size and the cabinet rather than on its own.
How big are they?
Most are 302mm to 569mm tall, median 397mm, and weigh 8.9kg to 46.0kg, median 18.6kg. Every listing gives height, width and depth in both inches and millimetres, so measure the space before you order rather than after.
What size driver should I look for?
Drivers here are mostly 8" to 15", most commonly around 10". A bigger driver moves more air for the same excursion, so it usually plays lower and louder with less strain. Two smaller subwoofers almost always beat one larger one, because two sources even out the peaks and nulls the room imposes - and that is the single biggest thing standing between you and even bass.