KSW 10 Subwoofer - auto on feature

[mekabe remain 0]

Hi,

 

I have a KSW 10 Sub. and it was working fine until recently. There was a change in our room and the sub was moved to another place without any information given to me.

I had to reconnect it to my receiver. I did not remember if it was in R or L/LFE connection so I just used the R

Then I set both volume and low pass freq buttons to medium.

 

Now the "auto on" feature is not working. 

In fact, if I plug the receiver when it is active, sub goes ON.

But then it does not turn off even after I turn of the receiver.

 

Sub is working ,  it supplies correct sound when it is on. However, it does not turn on/off.

 

What may be wrong ?

 

thanks.

[mekabe remain 0]

actually I noticed that it turns on and off.

But it turns on only when the volume is high, or when a very loud bass tone is available.

It turns off delayed after turning off the receiver.

 

So , how can I make it trigger faster ? Any adjustment to the low pass freq ?

[Peter P. 391]

Use the "L/LFE" input on the subwoofer. Here's the manual to assist you.

[derrickdj1 8233]

Leave auto features active

  It uses minimal  energy and protects the amp somewhat.

 

🌝

[mekabe remain 0]

actually it is on LFE now and it triggers a little late. It requires a bass sound to be triggered.

My friend has a Dali subwoofer and it triggers as soon as the receiver is turned on.

 

[nitrofan 158]

Set it to be on all the time, not auto on

[mekabe remain 0]

14 minutes ago, nitrofan said:

Set it to be on all the time, not auto on

not a good idea.

 

[nitrofan 158]

Why not? I have subs that have been configured this way for over 4 years with no problems

[nitrofan 158]

2 sub12s an rw12d and a jtr captivator 2400 all this way currently

[YK Thom 736]

It may be as simple as to what you are listening to and where the crossover is set. For example sometimes we will just play some music from one of the cable tv music channels, ours rarely engages. However when listening to CDs or internet radio through the Apple TV it is engaged all the time. Some sources may not be going as low as we think.

[mekabe remain 0]

so how should be the crossover set ?

and why does it turn off very delayed ? what is the normal time for turn off ?

[YK Thom 736]

I set my front mains to 60 when listening to music. My fronts are towers. Depending on the source it seems to kick in the first deep notes and stays green.

Ill keep my eye on it and see how long it takes to turn off.

[Peter P. 391]

Most subwoofers will stay on for a period of time after the input signal is removed. With my subwoofer, it's 5 minutes.

 

Leaving the subwoofer on all the time will draw unnecessary idle current, raising your electric bill. Subwoofers using an "Auto On" feature go into a low powered "sleep" mode after that period of no use, drawing substantially less current. In my case it works out to 3 cents/month.

[CECAA850 29393]

17 hours ago, Peter P. said:

Leaving the subwoofer on all the time will draw unnecessary idle current, raising your electric bill.

Ummmm. No.  Can you substantiate that?

[Emile 3663]

36 minutes ago, CECAA850 said:

Can you substantiate that?

Haha ... rough guess is that it draws 10 Watts when left "on" without a signal. That's 0.24KWatt/day ... at an average cost of say $0.10/kWh, that is about 2.4 CENTS per day or $8.76/year    Just skip one of your favorite Starbucks latte's (in a YEAR) and you'll break even  

[CECAA850 29393]

2 hours ago, Emile said:

Haha ... rough guess is that it draws 10 Watts when left "on" without a signal. That's 0.24KWatt/day ... at an average cost of say $0.10/kWh, that is about 2.4 CENTS per day or $8.76/year    Just skip one of your favorite Starbucks latte's (in a YEAR) and you'll break even  

I'd wager it's the same draw whether on or auto.

[Peter P. 391]

On 10/18/2019 at 5:53 PM, CECAA850 said:

Ummmm. No.  Can you substantiate that?

I just measured the current draw on my subwoofer, an SVS-1000.

 

Since it is a recent vintage product, it consumes less power than older, non "Green" energy compliant products. Your subwoofer's power consumption numbers may vary.

 

The manual lists the sub consuming 0.5W while in the low powered, standby mode.

 

Shutting off the stereo, and prior to the sub going into this low powered mode, it consumes 22.8W.

 

So if the Auto-On/Off feature of the sub is not used, it will consume 22.8W while waiting for an input signal versus 0.5W in the Standby Mode.

[CECAA850 29393]

They must have changed things then.  The SVS and Klipsch subs I've owned in the past had virtually identical draws with the switch in auto or on.  

[nitrofan 158]

Whatever it costs it's worth it to me not to have to worry about it being delayed when I want to watch or listen to something

[CECAA850 29393]

5 minutes ago, nitrofan said:

Whatever it costs it's worth it to me not to have to worry about it being delayed when I want to watch or listen to something

If you're worried about pennies you're in the wrong hobby.