other than being wary of any brand named "Trust", I can't say I have any idea. Their website doesn't even offer drivers... apparently they're quite certain the speakers will work fine with default Windows drivers. I also googled 'bass problems' and came up empty. The fact it works in test mode means your wiring, windows settings, and speakers themselves are all good, so I don't know. What program are you using to test the bass with? WMP? If so, it just totally rides the O/S settings, so there's not anything you can do to alter that behavior. If it works at all, it should work with your sub.

So...yea... that's a long way of saying I have no clue.

Heh, It looks like I went down exactly the same path as you. I googled "no bass in 5.1" and came accross a few people with the same problem. All of their issues were fixed by either fixing an error with which ports the speakers were plugged in to, turning the volume up on the sub or enabling the sub to support the sattelite speakers.

Now, the first two, I have done. I can test them as you already know, and they all work. However, the last one the "enabling bass support" I can't find a specific option to do. The closest thing I can find was that stuff about telling windows that my sattelite speakers are not full spectrum speakers.

I've yet to actually test it in something that fully supports 5.1 - so maybe it will work with that, but I need to find something that will let me try. Maybe it's just the fact the MP3's are recorded in stereo. Still, it seems a bit pathetic that all I basically have is a set of simple speakers, and I Can't find an option in windows to "add bass" to the sounds.

EDIT: Got it! Go to Sounds, Enhancements, Enable "Bass Management".

Just gotta play with the levels to get it right now, Getting too much Bass on the kick drum but not enough on the rest of the song!

EDIT 2: New problem, it seems to have completely killed my PC's actual output level. You know when you have the volume mixer up, and it shows you the little green bar? Well that is hovering pretty much at the bottom. (See attachement)

Now the system is by no means "quiet", it's more like a comfortable listening level. But I know this system can produce a near deafening sound...

Sounds like you have one of the advanced mixer options set real low. In Win7, go to your control panels, sound, and double click on your speakers. There should be a tab for levels... one of those is probably low. Awesome you got it working, though... congrats.

That was my first thought. Well, that's a lie - the result of many thoughts. But I checked, and even if I turned every avialable option up to max, the system was still kicking out nothing in comparison to it's old ways.

Upon fiddling about, suddenly all audio switched to the headphone jack (despite a lack of headphones) and that screwy behaviour lead me to think "driver reinstall" which so far, seems to have done the trick.

Thanks for letting me bounce ideas about

Yea, no worries, glad you got her running.