Yamaha RX-v477 and sub question

[randyr5]

I just got a RX-V477 and have a question. My old receiver, which was audio only - no video switching, I was using optical audio straight from the TV. With my sub on "auto", it would click on when it detected a low frequency signal, as it should. With the 477, using HDMI for audio, the sub is not detecting the low frequency, and is not clicking on. I have to leave the sub "on" the on position for it to work. Is this some quirk with HDMI audio? Should I just leave the sub "on" all the time, which I really don't want to do. Being new to these video switching receivers, can I use HDMI for the video and optical for the audio and see if that will activate the sub?

Thanks....

 

[randyr5]

Plus, my sub instructions say to set the crossover to max on the sub when using the sub pre-out on the receiver. Is that the correct way to set the crossover? I have it set at 120hz in the receiver settings.

 

[Adam]

Welcome to the forum, Randy!

A common cause of this issue is that the signal being sent to the sub isn't quite high enough to activate the sensor in the sub to turn it on. When you set up your new Yamaha, my guess is that the subwoofer level on the receiver is lower than with your older receiver. Something to try is to turn down the volume/gain knob on the sub itself, and turn up the subwoofer output level on the Yamaha (or rerun the YPAO routine). That should get it to trigger your sub.

Also, make sure that you have the speakers set to "small" and the subwoofer set to be on in the speaker menu.

To your second post, yes - set the crossover on the sub to the max setting and let the receiver handle the crossover.

 

[randyr5]

Thanks, I'll give it a try. There is a "volume level" adjustment in the setup menu for all of the speakers, including the sub, and there is a "volume trim" adjustment for the sub in the options menu. Which one should I be tweaking?

Speakers are set to small and sub is on.

 

[randyr5]

After messing around with it, I figured out the problem, which was me. Using the Blu-Ray, it worked fine, but TV was not. I then remembered that the set-top box was set to "stereo", and not "surround". My wife does not like messing around with the HT, so she watches TV using the TV speakers. With my TV, the STB must be set to "stereo" in order for the TV speakers to work. Once I set the STB to "surround", the sub worked as it should in "auto" mode. So basically it was "user error".

 

[Adam]

I'm glad that you figured it out - thanks for letting us know!

 

[JohnT]

Just wanted to give a heads up about this. If the "SW" logo isn't displayed in the speaker arrangement on the receiver's LED, then it isn't sending a LFE signal to the subwoofer. Also, sometimes the sub and surround channels are disabled depending on the source. You can use the "Extra Bass" feature and that will force the receiver to send an LFE signal no matter what your front speakers are set to (either small or large). But this does send extra bass to all your other speakers as well.

 

[3db]

After messing around with it, I figured out the problem, which was me. Using the Blu-Ray, it worked fine, but TV was not. I then remembered that the set-top box was set to "stereo", and not "surround". My wife does not like messing around with the HT, so she watches TV using the TV speakers. With my TV, the STB must be set to "stereo" in order for the TV speakers to work. Once I set the STB to "surround", the sub worked as it should in "auto" mode. So basically it was "user error".

Glad to hear you worked it out. Based on what you said, we should start a poll about spouses to see which preference they have; ie using the HT system or just the TV speakers