New Receiver, no sub output

[Ryom]

I decided to up my PC audio game a bit and got the following:

• YAMAHA RX-V867 7.2-Channel Digital Network Home Theater Receiver
• Polk Audio PSW Series PSW10 Powered Subwoofer
• Polk Audio RM8 Satellite speakers

I also have some pretty nice Altec Lansing satellites that I'll use as surrounds eventually. Moving on...

I got some cables from Monoprice as well:

• RG6/U 75ohm (for S/PDIF, Digital Coax, Subwoofer, and Composite Video)
• Optical Toslink Cable
• 14awg speaker wire and banana plugs

I have Realtek HD Audio onboard sound. I used the TosLink optical cable to connect to the receivers AV1 input. I connected my satellites with speaker cables to the Front Speaker connections, and I connected the receiver's Sub1 Pre-out to the sub's Line-In with the RG-6 RCA pin cable, I set the Optical out to the default sound device on my PC. Then I set the receiver up for 2.1 sound, two small fronts and a subwoofer enabled and I powered on the sub. However, while I get audio output from the satellites the sub gives off no sound whatsoever.

Any ideas what could have gone wrong?

 

[Ryom]

Well, nevermind... the sub is working now, the cable must not have been seated in all the way. Sounds pretty good

 

[LeninGHOLA]

always set your mains to small in this pricerange.

 

[Ryom]

They were set to small

Already solved the problem though, the RCA cable was just a little too snug to fit on all the way, unplugging it a few times loosened it up so that it seated properly.