How connect subwoofer to onkyo 8522

Maybe "Polk Audio PSW10 10’’ "&there’s no sound the standby light is red. Connect onkyo av-amp sub pre-out to line in and enter Onkyo av-amp speaker setting then subwoofer level calibration finally set +10db.

You simply connect a RCA type line cable from the subs line input to the dedicated socket on the back of the Onkyo.
When you run speaker set up it will set the subwoofer up.

There should be a input for powered sub on bar, will have black input, and be labeled. Or check your reciever for sub output.

The input jacks on the subwoofer panel are for connection of satellite speakers to it's crossover. The outputs are for the crossed over signal input to your receiver or amplifier, as there will be no amplification or channel processing from the subwoofer connection. It's only an optional crossover that may have a sonic advantage over the crossover in your receiver.

What you also can do is connect the speakers directly to the 703 and set the crossover frequency on it.

Since it does not have a dedicated subwoofer pre-out, you would have to use the "TAPE" outputs. If your powered sub (I'm assuming your using a powered sub) has only one input, you could either just use the left tape out of the receiver, or use an rca splitter to convert the left and right to a single jack. (I'm not a fan of that method, though).

It sounds like you're doing everything right. Did you define the sub to the Onkyo (Subwoofer = Yes, page 22)?

Let's prove the sub works. Set its volume about half-way, cutoff= 170Hz. Temporarily connect an RCA cable from its Line Input to one of the Tape Out connectors on the Onkyo and play some FM through it. If it's alive you'll hear the low end of the music.

Don't buy into the hype that there are different pedigrees of RCA (or speaker) cables that will make an audible difference. Save your money.

Have you connected the Subwoofer out to the "Pre-out Subwoofer" on the left bottom corner jack(looking from the back)?

Have you set subwoofer out in the menu(under speaker settings or similar menu you will find all the channels that you have connected and here you should have "YES" for the subwoofer)?

HTH

Well the next step would be to make sure that all the settings are set to subwoofer yes, and set your crossover as well.  The amp usually has a crossover which tells the microprocessor which frequencys to send to the sub.  

The problem was that some subwoofers (inluding my velodyne model) cannot process the LFE signals through the line level inputs on its amps, so the other way to run your subwoofer is to run the front left and right speaker outputs from your receiver to the speaker-level inputs on your sub, and then plug your front and left speakers into the soeaker level outputs on the sub. you have to set the onkyo receiver to "Subwoofer: No". that way the LFE signals are sent through the front speaker channels and you will get the same BASS output as if using the line-level input. O So yes it does require a bit more speaker cable, but it works fine now.

Onkyo offers access to manuals at their web site. HERE is a link to the receiver line.

Personally, I'd connect the speakers to main left/right. The subwoofer to subwoofer out. The Go VIdeo unit to VCR/Video 1, the cable box to Video 2 and the video output to the Sony TV composite input. No need to connect the TV audio out to the receiver since the audio feed comes from the cable box.