So if you think a subwoofer is not very powerfull even the small ones then think again.
For e.g a subwoofer with a 60watt output will produce the same amount of bass that a 200 watt main hifi speaker will produce.
There is really no need to get a massive output subwoofer for the average living room, anything more than 60 watts will be waisted and you find yourself using only a fraction of the subwoofers potential.
For a room to power guide read on.
ROOM SIZE POWER
13 X 13 60WATT
13 X 18 80WATT
13 X 20 100WATT
13 X 25 120WATT
This guide is from personal experiences and personal situations and set ups from the past 25 years.