Subwoofers: Do you turn them off when you are done for the day?

@kirkwallace 

I have PS Audio BHK 300 mono blocks and they are warm all the time!  I just looked them up and they draw @175 watts each on standby! The BHK preamp is a lot less. I’m guessing I’m around 500 watts when not in use.  I listen 6-7 days a week or I’d probably turn off the amps at the very least.  
With the temps hitting 90°+ here, maybe I’ll turn the amps tonight and see what things sound like in the morning.  I know after even a long weekend, I can hear the difference.

I have the Ref 31's which draw about 50W when on but idle.  Not sure I can tell a material SQ difference between always on or standby but I choose to leave them on based on the very specific recommendation in the manual for service life.  At a 10W draw there would be no question for me.

My subs are powered actively by an external class A/B studio amp, which is turned off by the end of a day's use. The same goes for the internal class A/B amps/electronic crossovers in my active speakers. A friend of mine recommends leaving on all amps during weekends, the rationale being that he finds there's a sonic benefit with his setup when they've been left on for +24 hours (he uses the same studio amp, but a whole 3 of them top to bottom outboard actively). There might well be, but I've always been more comfortable turning off the amps overnight. However I do leave on my DAC 24/7 during weekends, while on the other days it's put on standby overnight (I also prefer to turn it off completely for 5-10 minutes every week or two). My voltage regulator, DSP and network isolator are left on 24/7 all the time. 

No.

My JL Audio subs go into sleep mode automatically after the music stops.

I unplug everything when there is a thunderstorm.

So they say to leave the amp on to extend the life huh. What a load. Guess they never heard of shelf life. The more it's on the sooner it'll wear out