Sub has a Signal Sensing ON/OFF

IndiansFan

I have my old Yamaha sub hooked directly up to my Denon AVR-884.

from Yamaha's description "...For convenience, the Yamaha YST-SW40 has a signal sensing circuit. When the subwoofer detects an audio signal, it turns its power on. When it senses no signal for several minutes, it shuts itself off."

Have I done something wrong with the hookup in that it always shuts down after several minutes?

Is there someway to override the system so that it is always on?

Thanks,
IndiansFan

wutadumsn23

Unless it has a switch to be able to select between different modes, I would say there is nothing you could do about it. Is there a reason why you always want it on? If it is being used it should be on, and when it's not being used it will be off, this is normal operation for a sub.

-Jeff

Mon40CSMM10

The issue is very likely caused by an insufficient signal below the crossover frequency for however long the subwoofer will stay on before it shuts off.

I used to have a cheap BSR amplified subwoofer (intended for use with small compact stereos or boombox type stereos with detachable speakers) that did just that. If there wasn't a low enough bass signal (common with radio commercials that are mostly just voice, or soft passages of classical music that don't have low brass sounds), the amplifier would switch off and then when the bass signal came back on, the first bass hit also had and audible pop sound as the amplifier suddenly powered back on.

wutadumsn23

Mon40CSMM10 wrote: »

The issue is very likely caused by an insufficient signal below the crossover frequency for however long the subwoofer will stay on before it shuts off.

I used to have a cheap BSR amplified subwoofer (intended for use with small compact stereos or boombox type stereos with detachable speakers) that did just that. If there wasn't a low enough bass signal (common with radio commercials that are mostly just voice, or soft passages of classical music that don't have low brass sounds), the amplifier would switch off and then when the bass signal came back on, the first bass hit also had and audible pop sound as the amplifier suddenly powered back on.

Very good point, I forgot to mention that. Had a very similar issue with my old Onkyo HTIB sub.

-Jeff

IndiansFan

Thanks. The sub is the last item to replace. It usually cuts out when I have a CD playing. I intend to replace it with the SVS PC12-NDS in several weeks.