How low do they go?
Of the 130 here with a figure quoted, most are rated between 31Hz and 70Hz, with a median of 50Hz. 33 of them are quoted at 40Hz or below, which is roughly where a soundtrack's low effects and the bottom of a bass guitar live. Makers measure this differently, so use the figure to rank models rather than as a promise.
What do they cost?
Most sit between $269 and $26,999, with a median of $999 and a full range of $120 to $99,999. These are the current asking prices we hold, not sale prices, and they move - check the retailer before deciding.
Do I need an amplifier as well?
No. That is the point of the class - the amplifier is inside the cabinet, so a source connects straight to the speaker. The built-in amplification is mostly 50 to 450 watts, median 120 watts; 83 of the 97 with the spec recorded accept Bluetooth. Manufacturers quote powered-speaker wattage inconsistently, so read it next to the cabinet size rather than on its own.
How big are they?
Most are 201mm to 1,060mm tall, median 313mm, and weigh 2.0kg to 40.9kg, median 6.8kg. Every listing gives height, width and depth in both inches and millimetres, so measure the space before you order rather than after.