Most digital recordings have an extensive dynamic range - that is, a very wide difference between the loudest and softest sounds the recordings can reproduce. On many movie recordings,this can translate into what many find to be an unacceptable presentation, where one persons voice seems drowned out by an orchestra, so forth. the difference may be realistic, in that one persons talking voice would be expected to be many times less loud than say a full 80 piece orchestra, but makes little sense to many in terms of the purpose of listening to the detail of a drama. Often the recording studio is the source of this problem, making assumptions about the sound system the recording would be played back on , outside of a movie theater. and choosing volume differences that make no sense in a home listening environment. On the other hand, many home listeners like the explosive dynamic variation in sound levels, and are happy to dial up the sound so that voices are at a reasonable room level, leaving the orchestral and special effects passages to rattle windows. There are two or three ways to ameliorate this. One is to independently adjust the volume of the center channel, so that dialing down the whole leaves most voicing at useful levels. Another would be to use a control amp setting to compress the sound dynamics and boost voice, many amps have such a feature. Some amps also have a setting to spread the center channel voice to all three front speakers, which tends to increase voicing in many situations. With out a control amp, your choices are fewer, unless such modifications can be done on your source, such as the player, or TV. The point is, the material played itself contains these volume differences, so modifying them will require you to tweak your equipment in some manner to adjust for that, if it is annoying. And, you are not alone. Many find hugely pulsive dynamic recordings to be more a source of irritation than wonder, and many recordings overuse the dynamic range available. Shock and awe isn't everyone's cup of tea. and can often be distracting, or misused, making dramas hard to follow, or playing background music a unsuitable distraction. "Computer" speakers are just self amplified speaker sets usually terminated in a pin jack, to match a sound card output. They are what they are, and mostly depend on controls supplied by the soundcard's app, or/and the software program source. Some have independent volume control ability, but this is usually remedial. Without some mediating control, you would be stuck, obviously, with what you do have, which usually isn't much, unless you are running all your theatre sound sources through your PC. Also obviously, appropriate reproduction gear for theater systems is going to be a better choice.