Hey why isn't my sub woofer working with PC?

Connected my receiver to PC via V. Aux cable... (Before I used HDMI cable, but the result is the same) the sound works fine but the sub woofer doesn't work..

my woofer is the one that comes in the KEF 3005HT package. It has a light on top, when it's off its red and it goes purple then blue when it turns on.

Whenever I put a movie on or play PS3 games or listen to music via iPod it turns itself on automatically. It takes about 10-30 mins to turn it self off.. And it always turns it self off when I switch to PC / V.Aux :(

Also, my PC thinks I've got headphones connected even though its clearly a 7.1 speaker setup :P

Is sound coming out of all the speakers? Is the receiver set in stereo? What is the receivers crossover value set to for the sub?

We need a little more information. There are a lot of variables including your PC settings, but I'm sure its something simple.

Also on a side note did you use a KEF HT with some B&W685s as fronts?

There's usually a separate amp involved in powering a sub unit.

I'm going to agree with NVIDIATI and say that it's probably something simple. I've had the same issue with my own home theater PC. Let me ask this: Does your receiver show that it is receiving a digital audio signal? For example, on my Yamaha each speaker that is being sent a signal lights up on the display.

My guess is that your PC is not outputting a digital signal or, if it is, that the signal is not a digital audio signal. If it's only outputting two channels, that's all that'll be reproduced by your receiver. Your sound card must support Dolby Digital Live to output a constant surround signal.

There are several ways to deal with this issue, but it varies by hardware. My first suggestion is to update your sound card drivers to the latest version, then go into the driver interface and perform a surround sound test.

Once you've done that, come back and let us know what sound card you're using, operating system, receiver model, and content you are playing (movie, music, games, etc.).

If you're just looking to get subwoofer output from two channel audio and your receiver is receiving a two-channel signal, then the solution is going to be on the receiver, not the PC.

Troubleshooting is a pain, but the solution will likely be simple.

Boz

Sorry for absence, I used the "not sure if trolling or stupid" pic and got a 3-4 days ban for it here :/

Anywhoo..

NVIDIATI: My crossover frequency is 150hz LPF

Yes all speakers are working fine. I've set them on "Multi Channel Stereo" as that is the only setting that uses every speaker in my 7.1 setup.

Correct, I do have KEF 3005HT with B&W DM685 has front channels.

I'm going to agree with NVIDIATI and say that it's probably something simple. I've had the same issue with my own home theater PC. Let me ask this: Does your receiver show that it is receiving a digital audio signal? For example, on my Yamaha each speaker that is being sent a signal lights up on the display.

My guess is that your PC is not outputting a digital signal or, if it is, that the signal is not a digital audio signal. If it's only outputting two channels, that's all that'll be reproduced by your receiver. Your sound card must support Dolby Digital Live to output a constant surround signal.

There are several ways to deal with this issue, but it varies by hardware. My first suggestion is to update your sound card drivers to the latest version, then go into the driver interface and perform a surround sound test.

Once you've done that, come back and let us know what sound card you're using, operating system, receiver model, and content you are playing (movie, music, games, etc.).

If you're just looking to get subwoofer output from two channel audio and your receiver is receiving a two-channel signal, then the solution is going to be on the receiver, not the PC.

Troubleshooting is a pain, but the solution will likely be simple.

Boz

Bozanimal

You're going to need some sort of 5.1 encoder (DDL, DTS) in order to get a signal directly for your subwoofer from a single cable solution. If not, there may be a setting on your receiver to pick up the frequencies from the front L/R speakers and play the lower frequencies on the subwoofer.

Another option for you is to buy a crapload of 3.5mm to RCA cables and plug them into your receiver if it has Multi Ch inputs. I tried that out on my system, and it works fine.

Well I have onboard audio... I don't have a soundcard lol :(Mozelleple112

[QUOTE="Mozelleple112"]Well I have onboard audio... I don't have a soundcard lol :(Bozanimal