Search found 64 matches
- Thu Apr 25, 2024 9:51 pm
- Forum: Everyones Projects
- Topic: Building the uTracer
- Replies: 170
- Views: 106646
Re: Building the uTracer
I have a uTracer3+. It's very good. I would say: (1) Always use external supply. (2) Go the patch lead route for electrode selection (as shown in this thread). I used an old AVO roller switch and even though I took it apart to clean it, it's still unreliable. Colour-code patch leads are a much more ...
- Wed Apr 24, 2024 10:36 pm
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
That's beautiful woodbashing. I'm sure they'll sound good. But you're right, they do take up the Designated Footprint (and then some). I must dig out comparable pictures of my transmission line loudspeakers (positively compact compared to your washing machines). I wanted to finish said transmission ...
- Wed Apr 24, 2024 11:43 am
- Forum: Assorted Stuff
- Topic: The Audio-Talk Cycling thread.
- Replies: 3793
- Views: 1220265
Re: The Audio-Talk Cycling thread.
And I thought my bike had high gearing (53:16). I note one small flaw in the design though; the sprocket on the rear wheel will come undone. I'm amazed it needs two locks to stop it being stolen - you're not going to hop on that and ride it away. Wonderful.
- Tue Apr 23, 2024 2:04 pm
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
I looked up Blue Diamond Machine Tools. Looks like a very dangerous place for me to visit. I bought a 1960s Luthy sensitive drill press last week. Predictably, the electrical department is a nightmare, but the important bits look fine, although there has clearly been no maintenance for decades.
- Mon Apr 22, 2024 11:54 pm
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
I am hugely impressed by the deviousness of the "Getting the Green Light" post. Have you considered PR for a political party? Despite its tongue-in-cheekness, I may have to steal some ideas from there. Whether they will work is another matter. As to the Lowthers, Steve's Lowthers were pure...
- Mon Apr 22, 2024 6:16 pm
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
Morgan could easily fit those in his room.. And that's what hurts. It's not as if big loudspeakers would mean you couldn't stretch your legs out. I knew I should have kept the previous big loudspeakers. I made them upstairs, so I just had to slide their 50kg (in a controlled manner) down the stairs...
- Mon Apr 22, 2024 9:13 am
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
As you say, they're a bit big. Quite a lot big, actually. I hope they justify their size. I expect they will. I have been trying to persuade the domestic management that washing machine sized loudspeakers are the only way of achieving clean bass but she falls back to the default argument of, "I...
- Wed Apr 17, 2024 8:58 pm
- Forum: Speakers
- Topic: Something Stirs in the Workshop
- Replies: 242
- Views: 307620
Re: Something Stirs in the Workshop
4.5ms sounds perfectly plausible to align something to a subwoofer. You have a low-pass filter that adds a lot of delay, plus a little from the low-pass response of the driver itself.
- Mon Mar 11, 2024 3:25 pm
- Forum: Speakers
- Topic: TG "The Loudspeaker" Build (Sort of)
- Replies: 114
- Views: 10536
Re: TG "The Loudspeaker" Build (Sort of)
Nice work. I was going to warn you that although a router does a beautiful job, you get a lot of leverage on the trammel and it's easy to overload the router's bearings. Looks like you discovered it for yourself; I wrecked my Elu router that way. I then bought a much bigger router. Which I don't muc...
- Fri Mar 08, 2024 5:13 pm
- Forum: Assorted Stuff
- Topic: Audiojumble 03/03/24
- Replies: 36
- Views: 9206
Re: Audiojumble 03/03/24
Could very well be. Either way, it doesn't do what I hoped it might, and further thought and testing says extra poke wouldn't help. So I haven't spent 250 Euro or wasted time making something of my own. I suppose you could call that a win. And I've learned something. I've also noticeably flattened t...
- Fri Mar 08, 2024 11:58 am
- Forum: Assorted Stuff
- Topic: Audiojumble 03/03/24
- Replies: 36
- Views: 9206
Re: Audiojumble 03/03/24
And I've just measured the current drawn from those AA cells. 1.92A! No wonder it pulses 1s on, 1s off - the battery needs time to recover. All in all, a dangerous piece of kit. No need to make anything pokier - if this can't produce a visible glow from residual gas in a valve, then it's probable th...
- Fri Mar 08, 2024 10:04 am
- Forum: Assorted Stuff
- Topic: Audiojumble 03/03/24
- Replies: 36
- Views: 9206
Re: Audiojumble 03/03/24
Further experimentation shows that you need to have your fingers on the contacts or surface of a fluorescent tube or regulator valve to make it work. But I don't recall you doing that? And it's certainly not in the instructions. I don't much like having my fingers near the tip of a high voltage. Per...
- Thu Mar 07, 2024 10:55 pm
- Forum: Assorted Stuff
- Topic: Audiojumble 03/03/24
- Replies: 36
- Views: 9206
Re: Audiojumble 03/03/24
I'll measure what it produces first. But it certainly didn't glow a fluorescent tube when held in contact.
- Thu Mar 07, 2024 7:43 pm
- Forum: Assorted Stuff
- Topic: Audiojumble 03/03/24
- Replies: 36
- Views: 9206
Re: Audiojumble 03/03/24
Arrived. Disappointment. Insufficient poke. Just about managed to produce an orange glow in an 85A1 neon). I am told that:
If it's blue, it's air.
If it's green, it's barium.
If it's pink-purple it's argon.
And Jack's large nixie managed a blue glow with his tester, which I assume is pokier.
If it's blue, it's air.
If it's green, it's barium.
If it's pink-purple it's argon.
And Jack's large nixie managed a blue glow with his tester, which I assume is pokier.
- Wed Mar 06, 2024 10:24 am
- Forum: Everyones Projects
- Topic: On My Bench.
- Replies: 93
- Views: 31904
Re: On My Bench.
Ta for your thoughts all, I was wondering if there were any specific characteristics that Tantlum caps had that electrolytic don't, or vice versa. High ESR. (And very variable.) That's why they're recommended for regulators - the high ESR prevents a high Q resonant circuit forming. They're very fra...