3D Printed DIY Ribbon Microphone | Lundahl LL2912 vs Hand Made Transformers

Longest project and video so far :D
Project additional info and STL files for purchase:
https://dimapavlenko.com/3d-printed-diy-ribbon-microphone

Inspired by Ulf Blomberg | Hoborec Recording Studios channel:
His mic sound tests - https://youtu.be/HVRdMsXSm5o
Ulf making his mic - https://youtu.be/SpWUpGbVeJo

00:00 Intro song cover - "Life" by Anton Oparin: https://youtu.be/GPXwsvLct40
1:06 Shure SM57 vs DIY Ribbon Mic and blend (with premade Lundahl LL2912 transformer) guitar sound test
2:50 Introduction to 3D printing (ribbon mic voice test)
3:59 How I got into ribbon microphones (recording and mic blending)
5:07 Royer R121 history and budget alternatives
6:12 modeling concepts - implementation steps planning, parametric design, simplify everything, etc.
7:58 First prototype
10:05 Searching for XLR connector, sockets and inserts
11:19 Alternatives to XLR connectors - mini XLR or donor cable.
11:50 [PROTOTYPE] Cap snapfit
12:10 [PROTOTYPE] Transducer (a.k.a ribbon motor)
12:31 [PROTOTYPE] Pop filters
12:49 [PROTOTYPE] XLR connector threading and transformer
13:44 Cloudlifter - ribbon and dynamic mics 48V phantom power amplifier
14:38 Cotton and transformer soldering
15:12 Corrugator design
16:00 DIY transformer
16:44 Premade Lundahl LL2912 transformer test
18:23 DIY ferrite core transformer test
19:29 Basic shielding and grounding idea of a DIY toroidal transformer
21:38 DIY amorphous core transformer test
22:06 Premade vs DIY transformers guitar sound test
23:13 Which transformer to choose?
24:23 Amorphous metal bounce test
24:54 How to make DIY amorphous core toroidal transformer
26:56 What happens to a ribbon when passing current through it (simulate phantom power)
27:26 Shielding and grounding concepts, ideas and alternatives
30:50 3D models (STL files) slicing and printing settings
31:52 Pop filter mesh slicing technique
32:28 Hot water molding technique
33:28 Ribbon motor (transducer) assembly
39:17 Summary, more crazy ideas and motivational speech
41:27 Soviet nostalgia ending

=== RECOMMENDED PARTS ===

Neodymium magnets BX842 (1 1/2″ x 1/4″ x 1/8″ thick) grade N42 - https://www.kjmagnetics.com/proddetail.asp?prod=BX842
(get the stronger grade N52 if available)

DIY transformer amorphous core toroids (10*14*4.5mm):
https://www.aliexpress.com/item/32276192605.html

Premade transformers:
- Lundahl LL2912 - https://www.lundahltransformers.com/product/ll2912
- Mesanovic - https://www.mesanovicmicrophones.com/transformers

XLR connector (similar to Neutrik NC3MPRHD:
https://www.aliexpress.com/item/32801422573.html (5pcs/lot)
https://www.aliexpress.com/item/32803591731.html (50pcs/lot)

Regular XLR inserts:
https://www.aliexpress.com/item/32947446568.html
https://www.thomann.de/intl/shure_xlr_buchse_fuer_sm58.htm

Видео 3D Printed DIY Ribbon Microphone | Lundahl LL2912 vs Hand Made Transformers канала Dima Pavlenko