 Hey there guys, right It's a difficult one this is to That's all I get you to hear it because well, I'm gonna try plugging it back onto this Speaker, but it's not gonna Yeah, you're not gonna get the best sound out of it because it's not really made for that but What I wanted to say was There's no hiss. There's no hum. There's no noise Okay, I mean if you really listen hard when you've got that bollum up and then nothing going on on the input Yeah, you can hear a little bit of something But it's clean I've got all sorts of components You know, I've just been trying different stuff to get rid of the noise and what it turned out to be was when I shifted this sucker directly to here and The resistor, you know, so that they're in parallel this resistor in this capacitor, but I read into the ground there That helped with a lot Yeah, there is an advantage there is a this is okay being in I've gone ahead and did the office I The option there as you can see that 50 k part or there's a 4.7 K Now this is what this numpty did I put in a 4.7 ohm and the 50 k part You know, so again, it's one of my mistakes But that didn't get rid of all of the noise even when I took that out. I didn't get rid of it What got rid of it was putting this in here I had one strand of wire left on the end of here. I don't know why the rest is stuck in the board I don't know if you can see that This camera is a bit It's not a bit rubbish. It is just rubbish But that's it it's clean It's clean. I'm and I'm happy enough to go ahead doing the other side now Also a nice thing about this is if you know it's on the other video, but when I Unplug, let's just leave it unplugged for a minute or two When I was a I put this big big chunky old cap there. It doesn't really need to have that it's About four seventy. It was okay. I was just experimenting around You know, I've been I've been playing around with lots of different bits and pieces just trying to clean this noise up I've killed a few a few three sixties six thirties Why did I have to pick the one with the smallest writing on it from a different company? And I know that a couple of these LM 317s. I've killed as well IRF 630 a big pile I bought 30 of them. I think for about three pounds It's about pound fifty for delivering And they've come in handy. I know that's not the ones and it says to use up here There's the list and I got five ten Six ten six seven six twelve, but yeah, there's three The six thirty works Right so look what I'm gonna do now is I'm gonna plug it back in if you remember it was like going up to like two amps Which was I don't know I don't know because I haven't done this before with tubes and so, you know, is that normal? So but now Look at that look 400 milliamp and down to two So not only does it not jump up It doesn't it doesn't You know, it was settling on like about four before and Don't absolute no sound That's a bit a bit worrying, but that's good because it's not actually switched on to play anything And there's no sound Which means I haven't got any hums buzzes crackles No motorboarding and motorboating. Sorry And of course that hits There is if you listen hard You can hear something. They're a little tiny bit of his but nothing Lovely I know you probably can't really hear that. I don't even wear the microphone is on this thing But it's fine, I'm gonna what I'm gonna do is I'm gonna Disconnect these wires here, which are going to the mic and I'm just gonna connect it on to you So you can hear it yourself It's not going to play with the same sort of clarity is going through the headphones because it's going to try and drive that Big old speaker up there. Oh I could put it on the little speaker. Couldn't I that's the better way to do it. Sorry. Oh, here we go again You see mine. My head isn't very good at all. I can understand that what my teachers got so frustrated with me. I Can understand this bear with me. Well, I'll just get this camera. So I don't just go off on one Okay But that's that's nice This came out of a TV a really well, it wasn't really all there's a Sony TV. So Oh, no, that's a large because I found the carcass for it Bell Bell Co. It was made in the US Well now I can't even say that kind of be at the zigzags for resistance Which means it wasn't a European Not really driving that very well at all. I am probably better off trying to Plug it into this over here. So let's just see if it would like plug into that one over there I don't know. I don't know what to call it. I've actually got another TV speaker. Maybe I could try one of these I'm actually trying to lose See if they actually work or not. So You go along with the color code, which I believe is correct Plug that into there, and I'll just plug that straight on to there like that We'll give it a go And it's nice to see that it doesn't We're not gonna get it. It's just It's distorting that which isn't very good. So it's not a not very good And what I've done as well as I've put a 4.7k in instead of that pop because like I said the option was there and I've played around with lots of other resistors and I've got all the way up to 22k trying to We're gonna get inside Maybe that's the way it's supposed to be now. I reckon that is because before we were getting quite a bit of punch out of it Oh, I know why that would be because I'm a numpty and I'm doing it again I'm plugging it into the headphone and expecting it to come out of the speaker That's a nice The nice thing is Even though it's not gonna go up very loud, which I don't suppose anyone's gonna expect it to because this is just a But this is the bit that's interesting That's where it switched on of course, but no audio coming up. No noise. No hiss No, uh, you know, so That's it that that's that's sorted That's sorted I don't know if anybody can You know if I'm supposed to be able to get like lots of what's out of this Maybe if I put the other the other capacitors about there because that's what I've changed And I've played around with different resistors down here rather than that pop And I know that if I do it just the part I can get it to have a bit more oomph And There's a pity you can't hear through the headphones because I was doing it with the headphones. I can put a I don't know the natural fast. I don't know if that's the 6.8k here because of it is I think it might be actually a 6.8 Like I said, I went up to the 22k then I could hear I assume that's from the power supply or something but I was trying to get it so it was like half the voltage But of course the more I've been down the voltage here that's going to the plate in here and Well from what I understand you need some positive charge across there to up the electrons And the less I've got there the less it can do it so But to get rid of all that noise that's what I had to do That's what I did there it seemed to make a massive difference once I did that there isn't amongst you know playing around with other stuff Trying different capacitors here You know I was putting capacitors on me On the power I even stuck halfway down where I got my power wires coming in Halfway down I plugged in a End of the capacitor a bit capacitor thinking maybe that's got someone to do with it But uh, I'm going to carry on I'm going to do a little bit more experiment with this because what if I can Oh, I don't know. I don't even know what I'm supposed to be doing with it to be honestly fair I'm just quite quite happy now that there isn't all that horrible noise that circuit there is a good circuit to work off um I would I think I am going to do the other channel But I wouldn't mind trying another circuit as well or something that would give me Or maybe I should I don't know I think maybe trying it so I could get um It to go into another amplifier To use this as like a preamp Into another amplifier And see how that goes But I want to do both sides I want to do I want to do both sides They just seems I don't really have I like to build circuits. I can actually use like this amplifier here I can use that it's nice Um, I've got a nice chill out CD today And when I finish doing this and I'm going to go make myself some food. I'm going to put the laptop here I'm going to put the chill out CD into my auxiliary CD player Into the laptop into the amplifier And I'm going to put some nice vibes around the around this apartment here While I go and do that But to have something for a preamp for a pair of headphones to sit and listen Yeah You know a little music player plug my headphones into and go for a run. Yeah, I'll go for a cycle on my bike but not To sit and listen to but to have a little preamp For an amp and maybe get into Getting some more vowels or something. I'm not sure. I'm just jibbering away. I'm really really happy I'm really really happy that now this thing is um It's actually doing what it's supposed to be doing It's Making a nice clear sound coming through it and I haven't got any Uh undesirable noises or That motorboard and things gone That's great. It was at the stage right if I went close to it It would stop if I moved away it would start just very very faintly But that's the sort of thing that annoys me If I can hear it just very very faintly, you know, and there's no input going in but the pad was on That's just annoying. It annoys me. It makes me want to try and figure it out, but there's nothing now Just a very sort of like in the background You can just you can just barely hear it. I would expect to get that sort of thing off this But this is quiet anyway. It's no real noise at all Anyway, just uh, just that's the update on that and I'm really really chuffed that it works great That circuit is absolutely brilliant. So if there's anybody else out there thinking They don't want to give that a bash I'd say I've used the a12ax7 here not the a12 au7 but Um, I'm not sure if I'll actually buy any more tubes to plug in. It was just a case of I wanted to get the tube I wanted to get one that I could work on low voltage So I could try it And I'm I'm sure I've actually got it working So Yeah brilliant And I cheers for watching guys if you watched and uh I'll come up with something else See if I can put something else together and hopefully not make too many mistakes while I'm doing it Oi Oh, let me just have a little too much check on these Yeah, they're not as hot so It's not sizzling like before They're not as hot That's another good thing Of course it's only running that 200 milliamps. It says over there And when you first put it in it doesn't do that up to two amps Then bring itself down and as it gets you know sort of like a As it gets like 0.8 of an amp that's when this Was starting to come in it was clear until then but now it's just down there and there's no That's all Yay Anyway, I said it again. So I'm going. Bye. Thanks for watching