How much does not add a sound card sound?

Now I have a Logitech X - 540 speakers. When I play sound out of the speakers voice. Really bad / low quality. As I sat on my regular chair. But it sounds good because I heard the speakers at once and sub - woofer. If you buy good quality sound card will add a separate speaker or not. Now I just use on board Realtek. HD audio. In addition to buy a better sound card for audio only. Sound better in general?

Realtek. HD Audio sound device is actually very good. You may see little improvement in sound quality if you use may 40-50 coins from the Creative card. You may view the details of the differences in spending on new speakers. I work for Realtek HD Audio 5.1 surround sound of my voice and me Not a new sound card. But a replacement speaker.

car audio sound hi-fi tuning

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