Search found 390 matches
- Fri May 31, 2024 7:30 am
- Forum: Secrets of the Lathe Trolls
- Topic: The missing link ? Tefifon
- Replies: 0
- Views: 30
The missing link ? Tefifon
A few weeks ago, when I happened to be passing a second-hand goods market, a strange device literally jumped out at me. On closer inspection, I saw a kind of tape cassette. But instead of a magnetic pick-up, there was a needle as a pick-up? When I looked even closer, I realised that the tape was not...
- Fri May 31, 2024 4:27 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
And because it's so much fun, here we go again (because it's stereo)! . . C02 FP9_FP-comp-amp 1_3 PCB.jpg . . C03 FP9_FP-comp-amp 1_3 PCB.jpg . . C04 FP9_FP-comp-amp 1_3 PCB.jpg . . Whatever you think, I think it looks great. If it works as it looks, then all is well. Greetings from Austria Thomas
- Fri May 31, 2024 4:25 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Feedback Amplifier - Part 3 Now that the components have finally arrived, I can start assembling the circuit boards. First the small and flat parts (diodes and resistors). Then the sockets for the ICs and the small capacitors. Then the larger capacitors (tantalum and ElKo's) and finally the transis...
- Fri May 31, 2024 4:24 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Thank you very much! I endeavour tospinnertownblanks wrote: ↑Thu May 30, 2024 2:34 amThis is absolute gold and somehow you keep making the thread I find most informative and interesting get even better! Endless thanks for all of your work.
- Thu May 30, 2024 4:48 am
- Forum: Experimenters' & Innovators' forum
- Topic: Grabación sobre vinilo. con zafiro reafilado por mi.
- Replies: 4
- Views: 1048
- Wed May 29, 2024 11:05 am
- Forum: Experimenters' & Innovators' forum
- Topic: Professional vinyl record lathe step by step
- Replies: 90
- Views: 79464
Re: Professional vinyl record lathe step by step
I am speechless! First concrete picture. The V-spring and above all the cutting stylus are still missing to determine the actual frequency range when cutting. But a good job for three hours and otherwise nice and small. I'm curious to see what a complete, functioning cutting head looks like on your ...
- Wed May 29, 2024 8:33 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Feedback Amplifier - Part 2
Based on the circuit diagram, I then made circuit boards that fit my case exactly:
.
. .
.
I hope everything works as planned and I don't disgrace Flo!
Greetings from Austria
Thomas
Based on the circuit diagram, I then made circuit boards that fit my case exactly:
.
. .
.
I hope everything works as planned and I don't disgrace Flo!
Greetings from Austria
Thomas
- Wed May 29, 2024 8:24 am
- Forum: Experimenters' & Innovators' forum
- Topic: Professional vinyl record lathe step by step
- Replies: 90
- Views: 79464
Re: Professional vinyl record lathe step by step
You wrote: ... As feedback, I used an Ortofon phono cartridge, which gave a signal of about 5 mV at 1 kHz. After mixing the inverted phase FB signal with the inverted RIAA input signal, I had to drive the 200W amplifier to full output power to get close to the 0dB level and 1kHz recording frequency....
- Tue May 28, 2024 6:36 pm
- Forum: Experimenters' & Innovators' forum
- Topic: Professional vinyl record lathe step by step
- Replies: 90
- Views: 79464
Re: Professional vinyl record lathe step by step
here is a photo of the drive coil of a professional head, it is very easy to burn it... :) A drive coil from a professional head will last for many years if handled professionally and is not easy to destroy. If handled incorrectly, any coil will burn out easily. Whether a professional head for $10k...
- Tue May 28, 2024 6:09 pm
- Forum: Experimenters' & Innovators' forum
- Topic: Professional vinyl record lathe step by step
- Replies: 90
- Views: 79464
Re: Professional vinyl record lathe step by step
So many posts with so little content - that's quite remarkable. I won't argue with you, but I have to tell you this. I tested these Chinese vibrators at half speed and reached a fairly even level at 3kHz, which gave about 6kHz at a specific speed of 33.33 rpm. I had to completely change the correct...
- Tue May 28, 2024 11:51 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Feedback Amplifier - Part 1 I wasn't able to post anything last month. But not because I didn't do anything. On the contrary, I worked so much on my project that there was no time for the presentation. And because I also want to do my contribution properly, I first had to find some time to prepare ...
- Tue May 28, 2024 11:28 am
- Forum: Secrets of the Lathe Trolls
- Topic: Is stereo embossing possible?
- Replies: 20
- Views: 4441
Re: Is stereo embossing possible?
I wish you luckthemagician wrote: ↑Tue May 28, 2024 9:12 am...
About to go emboss a mono lateral -12dB to +12dB 315Hz sine wave test, doubt I'll hit 0dB but I can try - wish me luck!
@ronnied_themagician
Thomas
- Fri May 24, 2024 3:46 pm
- Forum: Experimenters' & Innovators' forum
- Topic: Professional vinyl record lathe step by step
- Replies: 90
- Views: 79464
Re: Professional vinyl record lathe step by step
So many posts with so little content - that's quite remarkable.
- Fri May 24, 2024 3:39 pm
- Forum: Experimenters' & Innovators' forum
- Topic: Marathon for the development of a DIY cutter in 20 days (and the opening of the first record cutting service in Ukraine)
- Replies: 48
- Views: 35056
Re: Marathon for the development of a DIY cutter in 20 days (and the opening of the first record cutting service in Ukra
And again fantastic work! You also managed to turn the cones - congratulations! And the many small parts - sensational! Thanks for the pictures and the videos - always a pleasure to see your work.
Greetings from Austria
Thomas
Greetings from Austria
Thomas
- Fri May 03, 2024 4:08 pm
- Forum: Secrets of the Lathe Trolls
- Topic: stylus heating question (plastic)
- Replies: 27
- Views: 15536
Re: stylus heating question (plastic)
Thank you for your quick reply. The FEP insulation can withstand at least 250°C, which is sufficient for the stylus. In your picture with wire winding, the coil is largely without contact. But if they were touching (without insulation) there would probably be a powerful short circuit with temperatur...
- Thu May 02, 2024 10:51 am
- Forum: Secrets of the Lathe Trolls
- Topic: stylus heating question (plastic)
- Replies: 27
- Views: 15536
Re: stylus heating question (plastic)
Not exactly. OK so the method I use is as follows: 1) cut off a couple of inches of wire (length = 2 x distance of stylus from binding posts, plus 8 x windings, plus a little spare at each end to hold on to) 2) mount the stylus in the head 3) tie one end of the wire to a binding post, leave a littl...
- Tue Apr 30, 2024 7:46 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Hey ! Nice vacuum set up! Well built ! For the filter on mine I use makeup little Cotton rags tape under the succion intake and it work well. Looks a bit like your filter. Thank you and glad you like it. My filter consists of the coarse dust filter that usually comes with the dust bags for househol...
- Tue Apr 30, 2024 7:44 am
- Forum: Experimenters' & Innovators' forum
- Topic: The farmer and his plow - When I set out to build a record cutter
- Replies: 274
- Views: 6500025
Re: The farmer and his plow - When I set out to build a record cutter
Hi Thomas Great project, amazing, thanks for posting the project. Good to read. I am swapping to a channel blower from a vacuum pump. Just got an old one on ebay to try out. Need more power. Best Nik Yes, the disadvantage of the vacuum pump is the lack of air volume (and the pulsating air column). ...
- Tue Apr 30, 2024 7:21 am
- Forum: Experimenters' & Innovators' forum
- Topic: Weird grooves
- Replies: 15
- Views: 3117
Re: Weird grooves
Great! I'm glad you found the error! Well done!
- Fri Apr 26, 2024 3:44 pm
- Forum: Secrets of the Lathe Trolls
- Topic: Caruso parametric curve
- Replies: 18
- Views: 3317