Hello,
I have a lot of questions :freak: to try and get to the bottom of this...
I'm kinda confused. Do you have a picture of your speakers? What Bose speakers in particular do you have? You say that your system is not 5.1, but stereo...while others are saying 2.1 (which implies a subwoofer). However, does it have a subwoofer, or is it just two stereo speakers?
Despite whether the system has two speakers or two speakers plus a subwoofer, the
Speaker Settings in the Windows
Sounds and Audio Devices (or any other place) should be set to
Stereo or
Desktop stereo speaker, because a 2.1 speaker system does not have a dedicated subwoofer (LFE) channel (hence why 2.1 option does not exist in Windows sound settings). The sub signals are taken from the front left and right channels after the stereo signal leaves the PC.
If you don't get the same effect with other speakers or headphones connected to your soundcard, then I would suspect that the Bose speakers has a problem, and not your soundcard or software.
Also, I see that you have RCA cables connected to a Y adaptor, but how are the speakers wired? (Are they wired to the subwoofer if there is one?). And...where has this Y adaptor come from? Is it one of these...
...and did it come with the speaker system, or did you buy it and plug the speakers directly to it, and then plug the 3.5mm end to the PC's soundcard (with not subwoofer in between)?
If the speakers are in one original, complete unit...then perhaps the wiring has split somewhere. Usually, it's the joint of the 3.5mm jack / RCA jacks and wiring where the copper wiring on the inside becomes frayed. Though, any part of the internal copper wiring could be damaged. Also, check to make sure that the 3.5mm jack and RCA jacks are clean, and that they are plugged in securely.