Super Amateur VinylCd recorder

[zdenek]

Hi ,first record vinyl on CD-r ...
you tube sound Genesis https://www.youtube.com/watch?v=9GXAlO4SilA

[zdenek]

[Thelatheofus]

Nice haha
That has to be the cutest lathe I've seen

[zdenek]

https://www.youtube.com/watch?v=-9vGIbm9SlQ
thanks, I also laughed when I heard such a recording on Vinyl CD-r for the first time, I didn't think it would sound so good, here is a video recorded with a slightly better camera [the sound floats a lot, but unfortunately that's the charm of a belt drive with a very light platter], Regards

[displacedsnail]

wow, that sounds really clear and strong! and i'll second the comment that it's a very attractive, chunky lathe. great work!

[zdenek]

thanks, wow flutter..., if it weren't for this... unfortunately the deviation of the smoothness of the platter operation is very large, close to +/-5% and it is very audible, but in return the signal to noise ratio is very high for the standards of vinyl records of this size size, let's say 1:100, i.e. 40dB, it seems to me that the frequency response also covers the human audible spectrum, right?
The most important thing, of course, is that the recording is original, it is not faked by mixing the noise of a vinyl record and superimposing a digital source signal, which is very common in false tests and so-called record cuts.
Besides, it is very easy to prove whether the recording is real or fake, all you need is a little trick with the right device and the owners of such equipment know about it...
What is interesting about this so-called amateur recorder is that the platter is under pressure.
This was done mainly for testing different heads etc...
The cost of making it, including materials, was no more than $100, so I think it was worth investing in such a toy.
I am currently building an advanced, large and heavy machine, but it is still a long way from completion, although the first cuts in copper are already promising.
Regards .

[zdenek]

a primitive vacuum plate with bottom vacuum
https://www.youtube.com/watch?v=1uUBIM6GHL0

[Fattcamp]

Awesome!

[tape]

great !

[zdenek]

thanks ,full power head https://www.youtube.com/watch?v=tVVo6sqGz1U

[zdenek]

https://www.youtube.com/watch?v=Xno2Eb41AKo
the video may be blocked in some regions, so I'm posting another video
https://www.youtube.com/watch?v=Xno2Eb41AKo

[zdenek]

https://www.youtube.com/watch?v=WEh6fhSEueM
oh my life...

[zdenek]

I should call this toy ecological [because very little material is needed and available everywhere]
What should I say about this so-called experimental machine?
First of all, this device, whatever you call it, records microgroove records with very high repeatability.
Secondly, it is very cheap to make.
Thirdly, it passed the test because it did not break down during my experiments, or in other words, when I write surgery and the patient, I mean the heads I made did not burn out.
Generally speaking, I am very pleased with what I have done and I was not disappointed. The Super Amateur vinyl record recorder project has come to an end. I would like to thank the people who were friendly towards my work and the final result.
The project has been completed. I can provide any additional information via private mail.
It's time to get serious... greetings to all board turners.

[Mary]

Congratulations on bringing what you had in mind to life!

[CutR]

Superb work zdenek, I really like the Neumann/Scully-esq styling of the machince, very eye pleasing if i do say so. Regarding the wow/flutter, have you tried a different motor with better torque?
It's the same problem with the Gakken, since i swapped out the stock DC motor with a stepper motor using Mark Rob's driver board I was amazed how it solved the problem when i initially thought it was something to do with the wobbly silde track. Maybe something for you to look into.....

[zdenek]

thanks, indeed, I mentioned it earlier that a belt drive is very suitable for playing gramophone records, but for cutting grooves in polycarbonate, plastic, and not even galvanized or rolled metal, not even those very shallow micro-grooves for recording records. such a belt drive is suitable because in this case the load on the motor is at least 50 times greater than when playing records. The sound will simply float and vibrate, let's face it, these are the laws of physics. Even the slightest inaccuracy in the thickness of the belt itself causes such strange effects .I have come to terms with this fact, because it is a very primitive and amateur thing, more for fun than for any sensible recording of sounds. For $100, it is even great when I often play recordings on sound postcards, the recordings with this toy are simply amazing, apart from wow, of course flutter. Finally, an exclusive solution would be a motor of the latest, but hackneyed generation, for a turntable costing $22k, but this far-fetched 4kg of power per cm would certainly not be enough to record signals in copper, you would need at least 25kg/cm to produce the output on the outer side of the disc with 14-inch electroplated copper, the moment was approximately 1 kg/cm [I don't want to calculate, so I hit the door five times], but it would make sense.
Therefore, an engine with the same construction as in this turntable should be built but at least five times stronger. Can anyone figure it out?

[zdenek]

Good news.
The super amateur vinyl record recorder was sold and I did not encourage the buyer at all.
How did it happen?
A guy wrote to me on YouTube and asked me if this machine was for sale or was it an improvisation?
I can sell it to you, I replied. I would like to see this machine recording live, this guy says to me.
I answered correctly, I have the rest of the week off, please come, I tell the guy, and I will demonstrate the recording live. A guy came to see me. I immediately noticed that the guy's eyes lit up like fires. I demonstrated to the guy how to record and play back with this machine. Guy I can see that he is in shock. The guy is well over sixty. Sir, I would like to buy this machine for you, how much do you want for it? I replied to the guy, joking of course, and I said 1000 Euro for the machine and 500 Euro for the amplifiers and the line controlling the machine and the head. Agreed, the guy replied! I'm also in shock and I don't say anything. The guy, the merchant, takes out a thick wad of money and quickly counts out 1,500 euros and gives it to me. The guy says to me: I'm a former mastering specialist, I worked on German machines for many years, but this quality of recordings I've never heard it on such a small disc before and I've never been able to record it so well on professional machines. I'm buying it from you out of sentiment and I'm extremely happy with the purchase!
And I'm making another Super Amateur recorder.

[zdenek]

https://www.youtube.com/watch?v=ELosCVNkQg0
this recording is a head without a V spring... or whatever it is called, the head cost one hour of work and the speakers from the laptop were used, I don't even know what power because the manufacturer did not specify, the quality of the recording is astonishing and it is true

[zdenek]

Fasct shows an absolutely real film with a recording made with a 3D printer, you can learn a lot from this guy. You can see and hear that the recording is real and without retouching.
https://www.youtube.com/watch?v=I4MDqn6rg7M

[zdenek]

We have encountered a serious problem with the drive coils of amateur heads, namely, after a few hours of operation of the head at an elevated temperature, the factory glue evaporates and the coil lies loosely on the body, which causes a drastic increase in distortion and a reduction in power, and consequently the head burns the drive coils.
The conclusion is that the loudspeaker drive coils can work as loudspeakers in open air for a long time, but for a very short time under mechanical overload, the head must be thrown away, it will not work for long, rather a very short operating time for such a head made of commercial loudspeakers, especially Chinese ones. for $20 each.
Professional heads must be made differently.