Connection question for Subwoofer

[lucid]

Hi lucid,
Thanks for getting back. But whatever about pants, should I be wearing some type of rubber soled shoes trying to do this? Well at least I've had a good NYE if it all comes to an end shortly.

Just a quick clarification before I try this. I should try it with the cable plugged into the 'LFE In' at the back of the sub first. Then if nothing, try it in 'L Line Input' second?

Do I need to lick anything? Feels like I should - either the cable or my finger. Hmmm....

By the way, I have now connected all my speakers in case that was the problem. Now running 7, but still no 7.1 as of yet... Didn't make the slightest difference. Tried it again both manually and autosetup - again setting all the speakers to small.

Did either the speaker or amp manufacturer tell you to wear rubber shoes when connecting your gear?....No. Did you get an electric shock?....No. A little bit of common sense will tell you that we are dealing with the same connections as you've been happily playing with since setting up your system....and you're still alive to tell the tale. As Mark M succinctly put it - "Just touch the ruddy cable"

Lick whatever you want - and please spare us the details - but you're making a hell of a mountain out of a very small mole hill.

 

[ucdier]

It's a basic question but does the amp auto detect the sub connected to it? My old Yamaha 795 has a setting for LFE out via EITHER the main speakers OR the sub output.
Oh n don't lick your LFE cable, you might get a numb tongue!

Nope, it doesn't autodetect. Nor does it work when I manually set it up and use test tones to try and send a signal to it.

Presumably the old Yamaha 795 setting to LFE out via main speakers or the sub output has been superseded by having the option to set the bass cross over frequency? I've set this at 90Hz so it should be basically doing the same thing as setting LFE out to sub output? So signal should be sent to sub also - its not.

 

[ucdier]

Okay, what we need to establish is if the sub is working and if the cable is working. The test is simple, although it'll probably scare the pants off you the first time you try it.

Turn off both amp and sub. Disconnect the sub lead from the amp end. Turn the sub volume control down to 1 notch above minimum. Turn sub on. Touch your finger to the end of the phono cable centre pin. The sub should buzz. If you hear nothing try the volume at 2 notches. If you still get nothing then I'd suspect a duff lead first. Turn off the sub and swap out the cable with something else just as a test. If still no sound try the Left Line In socket. Repeat the test at the lower volume.

If you do hear a buzz when running on the LFE input then you know the sub is working. The issue then has to be the amp.

I tried this - no buzz.

Guess it looks like its the cable(s) or the sub? I tried two cables (both new - although 1 yr old - from box) and neither worked.

 

[lucid]

If you've tried different cables then it sounds like the sub has a problem. It's gotta go back to the retailer then.