2. amps-preamps
  3. 170195-161963

Subwoofers going into standby with low volume listening (New Integrated Amplifier).

Hello,

Just got a new Integrated amplifier (Technics SU-R1000) and have dual stereo subwoofers connected via the amplifiers preout R/L RCA connections (RCA Y-splitter at each Line In R/L connection) on my KEF 12b sub's.

While listening at low volume my subwoofers keep going into standby mode and turn off. The subwoofers also don't sound very lively at all. I have the crossover and volume at "Max" just to try to hear them and they don't sound loud or overly bass heavy at all, which at max volume would've sounded very over the top with my previous integrated amplifier. I've adjusted the crossover and volume numerous times and the subwoofers are just extremely soft and quiet. I've also adjusted the volume control on my Innuous sense (volume down) and upped the volume on the i-amplifier with no effect at low volume listening.

Wondering what could be causing this, and how to potentially fix it? Would the amps volume attenuator have anything to do with it? Also before I was running my sub's of my power amp loop outputs, which I'm not using now. Then again the technics is rated at 150w@8ohm/300w@4ohm where my power amp was 200w@8ohm/350w@4ohm, so I figured I wouldn't need the power amps yet.

Speakers are JBL L100 Classic 75th Anniversary. And cables are RCA SVS subwoofer cables with a y-splitter off each R/L RCA cable to then you nnect in to both line level R/L ports on my subwoofers.

But dually concerning is that even when I crank up the volume on the subwoofer, they sound extremely tame and subdued.

Any help would be appreciated.

Thanks!
ja_kub_sz
russ69's avatar
russ69
3,579 posts
 
Not much you can do with the sub turning off at low volumes, that is an internal factory setting. I’ve had subs that do that.
For best sub performance set your sub on the "in room" EQ setting and switch the 0-180 phase switch until you get the best volume. Turn your crossover to 80hz or more. That’s the only thing I can think of.
The other thing that comes to mind is that with the JBLs being fairly efficient, the subs just aren’t getting enough signal to stay up with the loudspeakers.
Scource content with no bass?
yogiboy's avatar
yogiboy
5,906 posts
 
Take the sub out of the standby mode and put it in the on position. If you do that it will not shut off!
russ69's avatar
russ69
3,579 posts
 
"...Take the sub out of the standby mode and put it in the on position. If you do that it will not shut off!..."

I looked at the manual for this sub, just an on off switch, I didn't see a standby mode switch. 
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