Passed the checks with Mr 8, still can't understand a word of what he/it is saying. It's always like "BzzzT! BzzzT!" There are some comments in the toolset on what he actually says, some comments are missing, so I had to invent some stuff, but now his words actually appear on screen as subtitles AFTER the player passes the perception / science check for his voice module. I am going to post the dialog here, it's funny.

8: BzzT!
player: HUUUH? What was that?
8: BzzT!
player: I have no idea what you're saying right now.
8: BzzT!
player: You need to put an "Out of Order" sign on that voice module of yours!
8: BzzT!

player: science 75: Wait, after listening a bit - that's RobCo termlink protocol you're broadcasting, right?
player: science < 75, permanent perception == 10: You're emitting characters in patterns of 8, bracketed, with tone adjustment at the end.
8: < Why, yes, that's correct. Well done. >

player: science < 75, permav perception < 10: The more you speak... something's... technical about the way you're squawking at me.
8: BzzT!
player: science < 75, permav perception < 10: There's a... pattern to your speech or something.
8: BzzT!
player: science < 75, permav perception < 10: I have no idea what you just said. Moreso than usual.
8: BzzT! /essentially ends the dialog and completely blocks 8 out from dialog with player at this point /

player, passed science check: Yep. I've read enough Big Books of Science. I am acquainted with all protocols.
player. passed PER check: Well, I just heard the rhythm in the sequence is all. I am very perceptive, you know...
8: < I am quite impressed. >

player: Not to brag, but I am perfect. Wait, I think I just bragged... Anyway, you have my condolence.
8: < Finally! Someone, who takes me seriously, instead of ridiculing me all the time! >

player: I agree. If someone took the time! You're more than just sound effects in a tank.
8: < Exactly! I am a living human floating bot and demand respect! >

player: science < 95: Uh... if you're speaking that code stuff, I can hack you, right?
8: [FAILED] < NONSENSE! > /essentially blocks player out from hacking 8 /

player: science >= 95: If that's RobCo termlink protocol doesn't that mean it can be hacked?
8: [SUCCEEDED] < Why, yes, that's correct. Oh my... >

player, passed the hack check: It'll only take a second to violate your rights and make your voice mine.
OR
player, passed the hack check: Don't worry, I'm not going to take advantage of your exposed code.

8, player threatened to hack him:
< What da hell are you talking about?! >
< I REALLY hope for you it was not meant as a threat. >
< CAUSE OTHERWISE I'LL /CENSORED/ >

player: Shut up. All right, let's see what I can extort from you. First, gimme some energy cells...
8: < I'll rip out your brain and eat it for breakfast! Oh, wait, you don't have a brain. Damn!!! > /gives player some EC/

player. Nice. I told you to shut up! Let me think... microfusion cells! Yeah, gimme some!
8: < This [censored] violates the European Convention on Human Rights! Oh, wait, we are on US soil right now. > /gives player some MC/

player: Convention-shmokvention! Unlock your room, I want what's in there! /his room is now locked 255, so this is the only way to get inside /
8: < You are going to pay for this!!! > /unlock room/

player: And lastly, if I ever need you to blindly agree with me you will. Understood?
8: < What help? The pacification field makes us immortal, you can't start a fight in here while it's active! > /player controls are no longer disabled in think tank area, but all bots are essentialled and ghosted, so had to change the dialog somewhat/

player: I know that. Still, I may need someone on my side in a debate. /need to check if Obsidian provided some option to have 8 fight for you against Klein /
8: < DAMN YOU!!! >

player: You don't really have a choice. And thanks for the gear.
8: < Humans! Isn't that typical... > /hack dialog ends at this point, continue non-hack dialogue below:/

player: Who are you actually? Now that we've discussed your voice module, introductions are in order.
8: < Who I am? I am Dr. 8, audio engineer at this facility. >
8: < I have a very important role here doing stuff. >

player: Tell me about the sonic emitter.
8: < A sonic emitter uses sound to injure, incapacitate, cojagulate, or kill an opponent. >
8: < In addition, it was equipped with an EMP module that deals bonus EMP damage and disrupts force fields. >
8: < It got lost, however. Borous, the idiot, lost it somewhere in the X8 facility. >
8: < There are many different mods a sonic emitter can be upgraded with. >
8: < Hmm, let me think. May still have an upgrade or two... >
8: < Have you been to Higgs? Got a dwelling there. >

player: Higgs' Village? Can you point it out on my Pip-Boy? /map marker == 0, show it/
player:Yeah, I know where it is. /map marker visible/
8: < Yes, so, inside the house... >
8: < ...inside, are two audio samples - one can be used to activate the jukebox upstairs, the other is used for sonic emitter repairs. >

player: What did you do to the sonic emitter that made Klein so angry?
8: < Um... I... I kind of... I creamed hard into your gun! >

player: Whaaaat?! I *** touched that thing!!! HEEEELP!!! Someone, some disinfectant, quickly!!!
8: < Yes... ahem... sorry about that. >

player, female: I usually just take a fusion cell and oscillate its charge, vibrates for like an hour.
player, male: Usually, I can find some cram lying around. Put some duct tape around the lid, good to go.
8: < That's not a bad idea! Thanks! >
8: < Here, take this... In case you need some privacy. > /give player some MC or cram depending on six/

player: Um... got some more to help me "pass" the "time?"
8: < I beg your pardon? >

player: You know... sonjaculate. There, I said it. HAPPY NOW, HUH? HAPPY THAT YOU EMBARASSED ME LIKE THIS?
8: < Ok, here's some additional stuff. >
8: < Don't sonjaculate it all at once, haha. >
8: < Sonjaculation poses certain risks to your health! Please, always consult your GP first! > /give player some additional stuff as above/

player, got the EMP module for sonic emitter: I got your emitter EMP-upgraded.
8: < You did? Well, that's great! >
8: < I am emotionally attached to this baby. Hope it meets your expectations. >

player: Cool stuff, baby. Bing Bang!
8: < HOORAY!!! >

player: Hey, come down! It's just a weapon.
8: < Just a weapon?! Just a weapon? >
8: < It's a work of art! I am so proud I could sonjaculate into my panties... if I had panties, i.e. >

player: All right, all right, I got it, you are very proud of your weapon.
8: < Hip hop hooray! >
8: < Hip hop hooray! Some bonus sonjaculation-ammo (SEA) for my friend here! Not you, stupid human, the WEAPON. > /give player some more sonja-stuff, haha/

player: Why does Klein want the technologies he asked me to recover?
8: < These technologies are extremely dangerous... I think. But they are all that will protect us! >

player: You sound agitated. Or you're percolating. Or sonjaculating. Or something.
8: < Don't be a fool! You must retrieve them! >

player: Tell me about the Big Empty.
8: < Big Empty? I don't know of any such place! >

player, commenting on the idiots' refusal to accept this name: I mean THE *** SPOT WHERE YOU *** RESIDES AT THIS VERY MOMENT. What is it with these people???!
8: < Well, it's the nexus of all our research. Our home, you might say. >
8: < It's seen better days, better times... long ago. >

player: Tell me about Moby.
8: < Dr. Mobius! Where? Is he here? He'll destroy us all! >

player: Calm the *** down! He's not here, I am just asking you to provide some info on him.
8: < I apologize for my emotional display. But it is a serious matter you've brought up. >

player: Your voice module got damaged, I heard. In an attack. /got info from Klein etc./
8: < Sort of. It's hard to explain, but yes, the voice module is broken. >
8: < The module wasn't literally damaged, it was re-programmed by one of the attackers. >

player, speech 50: I know what it means to be attacked without warning, trust me, 8.
8: [SUCCEEDED] < I appreciate the sympathy. >

player, speech < 50: Well, and then what? Come on, tell me, quickly! Don't just stop there, it's so exciting!
8: [FAILED] < I am sorry, but I am an emotional wrack right now. Can't talk about it. >

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Ha! So now you can actually understand what the damn bot is yapping at you. Thank God! His "BzzT" was driving me insane.