So I decided to rewatch Alien, Aliens, Alien3 and Alien: Resurrection before Alien: Isolation...

idk, never watched any Alien movies. Except when they're co-starring in Predator movies.

One thing I have noticed with some movies that feature 5.1 or better audio is that the center channel (voice) is often extremely low. Most sound systems remix the center channel into the two front channels if there is no dedicated center channel available. In that case the foreground noise will drown out speech. There's not a lot you can do about that without a proper sound system unless the movie comes with another separate 2-channel track that you can switch to.

On that note, I am really hoping that Isolation gives me my Alien fix considering the disaster that was Colonial Marines.

edit: The game is awesome.

It's been several years since I watched the various Alien movies last, but the funny thing is, I remember the first one being the one with some sound level issues.

ive never had any issues with understanding what they were saying in the Aliens series. i have the collection & have never had any trouble with having to adjust volume or change to subtitles. it might be that the words are a bit advanced for where you are at in understanding English, due to it being a Sci-Fi movie. so some of the words wont be used a lot in standard dialog, or made up due to it being a Sci-Fi film. such as the word "Xenomorph," it never existed before until the movies happened.

Subtitles.

I am a native English speaker, and usually enable English subtitles anyway in films, for exactly these reasons. Either some stuff is too loud e.g. explosions, or voices are too quiet.

I had no problem with it.

I guess there´s no localization in your language? I think it´s some kind of difficult to watch a movie, when it´s not your motherlanguage. I understand most, but it´s hard to follow the storyline when you have to translate it for yourself/ or read the subtitles, so I´m happy here in Germany all movies are localized and mostly very well.

What is your source? Buy the latest bluray version and play it on a good sound sytem. Dont download it and use inferious sound (earphones, laptop speakers).

Never saw any Alien movie, except if you count Alien vs Predator :P

I just did the same last Sunday. Watched Alien 1,2,3 & 4 on Popcorn Time. And you're right, speeches were bad, but movies were pretty good especially the first and the second.

The third one is more psychological, the fourth I think was just made for commercial purpose and was not that good (CGI nice but storyline was a mess).

Just watched the whole Alien movies line as well, OP (except AVP, since I never watched anything about Predator).

English isn't my native language, but I guess it's the problem either with your language knowledge or with the quality of the films you downloaded. I understood all pretty easy without any problem, but I also used subtitles just in case. There is also a localisation for my language, but it sucks balls as usual.

P.S. Alien 7.5/10, Aliens 6.5/10, Alien 3 7/10, Alien: Resurrection 3/10

If I'm watching a film on TV, things are generally ok, but if I'm watching a DVD, I always put on [decent] headphones now. Otherwise, it's a case of turning the volume way up in order to hear the dialogue and inflicting muffled explosions/music/whatever on everyone else in the house. Conversely, listening through headphones, not only do I not have to turn the volume up as high but the overall sound mix is significantly better and dialogue is much easier to hear properly.

tl;dr get headphones

I watched all Alien and Predator movies a while back and I enjoyed them more than I expected.

if there is anybody out there who never saw the original alien movie yet, i deeply advice to read the novel. i did it back in the day and it scared the shirt out of me.

Resurrection was definitely the funniest.

Unrelated to OP's post:

As a huge Aliens fan, I'd say the first two are the only ones that I'd say are a "must watch". Aliens 3, Aliens: Resurrection, AvP, and AvP2 are just too cheesy for me. I also watched the Predator movies, but yeah, 2cheesy4me.

I have the first one on DVD and its very clear, but I think it was "digitally remastered". Also don't forget to watch Prometheus! I don't know if its been confirmed but this new series sure seemed like the "prequel" to Alien. Its by the same director and everything.

Aliens > Alien. The others I pretend they don't exist.

If you can see the directors cut's of the movies, do it. Specially alien 3 had a very interesting version... and yes forget Prometheus

All 5 Alien movies have very different qualities, which makes comparing them very difficult. I'd say 2 and 4 are the most similar, but their directors are wildly different, which means both movies still feel completely differently.

Overview of the Aliens V Predator games includes Alien Colonel Marines by a Youtuber, Its interesting and you may watch it as you took the time to watch the movies

I always use English subtitles so I can read it when someone is sounding like a mumbling drunk.

You might want to play Alien Colonial Marines while you're at it. JK.

I always use subtitles, mostly because I don't turn my volume all the way up and I hate missing out on the dialogue, especially for movies. The volume levels for Sitcoms and dramas are usually more predictable.