wlinart

U47 style pcb on ebay
« on: December 28, 2018, 10:28:16 AM »


Khron

Re: U47 style pcb on ebay
« Reply #1 on: December 28, 2018, 02:32:07 PM »
Whatever it is, $88 for a board, some random tube and a couple resistors? That's M-P levels of rip-off  ::)
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

wlinart

Re: U47 style pcb on ebay
« Reply #2 on: December 28, 2018, 02:33:44 PM »
Yeah, it is a complete rip-off, probably $10 in components  :o
But still a little bit curious about it.

RuudNL

Re: U47 style pcb on ebay
« Reply #3 on: December 28, 2018, 04:34:47 PM »
This looks in nothing like a U47 circuit.
Miniature tube (they blurred the type number!), small transformer and cheap components.
There is a solution for every problem!

http://www.vansteenisaudio.nl

analogguru

Re: U47 style pcb on ebay
« Reply #4 on: December 28, 2018, 05:24:15 PM »
.....
Miniature tube (they blurred the type number!), .....
From the description:
Quote
Using a US-made JANXXX model tube,....
So the US-made tubes are shipped to china, sweet 12 year old virgins are putting them into the pcb under the moonlight...... everything has its price....
.
.



Re: U47 style pcb on ebay
« Reply #5 on: December 29, 2018, 09:26:04 PM »
However that guy has some cool stuff on his page. Edge terminated capsule for cheap, shipping included. And one very interresting electret capsule i havent seen before ;)

Re: U47 style pcb on ebay
« Reply #6 on: December 30, 2018, 12:31:19 AM »
That seller also has a solid state condenser PCB that's $230 or so.
However that guy has some cool stuff on his page. Edge terminated capsule for cheap, shipping included. And one very interresting electret capsule i havent seen before ;)
Are they the RK-12 or some other one?
« Last Edit: December 30, 2018, 12:42:21 AM by Icantthinkofaname »


Re: U47 style pcb on ebay New
« Reply #8 on: December 30, 2018, 01:53:11 AM »
Seems to be Advanced Audio AK12 type. However it is cardioid only.
https://www.ebay.com/itm/1pc-34mm-Large-Diaphragm-Condenser-Microphone-Cartridge-Core-For-Blue-Mic/312339454897?hash=item48b8e1dbb1:g:nc4AAOSwa1Zb~J9I:rk:49:pf:0

I haven't seen this one before! It is a bit pricey for an electret, but if we find the source...

https://www.ebay.com/itm/25-7mm-Diaphragm-Condenser-MIC-Capsule-Microphone-Cartridge-Electret-Cardioid/312367333741?hash=item48ba8b416d:g:Vk8AAOSwe6JcD3uH:rk:45:pf:0
I believe Rayking makes that CK12 capsule as well, I've seen it on their site and Alibaba store. I'll check their Alibaba store when I get home for that electret capsule. I'm at work right now.

That small diaphragm capsule doesn't appear to be made by Rayking.
« Last Edit: December 30, 2018, 04:37:59 AM by Icantthinkofaname »

 

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