I have a Matsonic MS8147C motherboard with in-built audio and the sound volume when playing a pre-recorded DVD is very low, even after putting all the settings for volume to maximum. Sound levels from other sources are acceptable. The DVD drive is a LG Super Multi DVD drive GSA-4081B. My speakers are from my old Siemens computer and are of unknown make, they can be either passive or active; on my old computer they did emit sound in the passive mode, however on my new set-up they have to have power to work. In order to get an acceptable level of sound, do I need to change my speakers or install a better sound card?