Originally Posted by indio22
On some subs, standby mode is a gimmick in terms of electricity usage. The subs draw the same power in so called standby as when switched on. I am using this smart power strip with my "always on" BIC F12:
My Denon AVR-1712 is plugged into the master outlet. Sub is plugged into one of the switched slave outlets. Power is cut to the sub whenever the receiver is turned off. This eliminates the 24/7 power draw of the sub. Using excess power in standby mode is poor design, given that some other greener products manage less than 1 watt in standby modes. There are consequences to excess electricity usage, especially in populations of such devices, it is well documented. Hence the push to reduce wasteful standby power usage. A smart strip such as the one mentioned is one way to address the problem.
Interesting product, but one has to wonder how much electric this gimmick device uses while it is in "Standby" waiting for the master device to be turned on and how much additional electricitry it uses waiting for the master device to be turned off.
In addition, one has to look at the global, cradle-to-grave picture to see if a device such as this is really helping the environment and is cost effective. How much energy and materials was used in development, testing, production, manufacturing, adertizing, packaging, shipping, storage, distribution, re-shipping, warehousing, shipping, re-packaging for mail order, shipping, stand-by phantom power for its own electronics, shipping for disposal, and landfill usage at its final resting place. Did it really help the environment, or the manufacure's bottom line?
The most economic means to stop phantom power draw is a simple power strip with an ON/OFF switch.
Also, many AVR units have a switched outlet on the rear panel which serves the same purpose.
But, one also has to wonder how effective is a stand-by state when the unit displays anything on a screen while in "Stand-by". There is obviously power consumed for that display and the electronics to generate the message and other electronics waiting to sense a signal to turn on again. One also needs to understand that an amplifier draws very little power while in a quiesant state of no signal input. However, when initial power-up occurs, there is a large power surge to charge power supply capacitors and such. This is sometimes heard as a thump when applying power.
So, is it an issue if the sub goes into stand-by mode? I think not..
If anyone is worrried about saving the environment by saving electricity, (s)he should not be in the Home Theater hobby using a 300 Watt sub, 1000 Watt Amplifier, 250 Watt TV or projector. One hour of watching a movie (1.55 KW-Hr (minimum)) blows away drawing 1.5 Watts of stand-by phantom power (0.0015 KW-Hr per hour) that may be saved by having the sub go into stand-by mode.