Posted on Saturday, 26th May 2012 by Auw Jimmy
Perhaps you still remember the first article about designing the PCB? Now finally, the PCB has been done.
The result is quite awesome, as the specs also set at premium grade. This 2.5 mm thick red PCB has 2 oz Copper and TG170 grade. All solder pads are through-hole type, double layer with Immersion Gold finish. Tracks are on the bottom side. With this specs, I believe it will become a quite overkill solution for anyone who expects ultimate performance without compromise.
The idea actually comes from the situation where I find it’s quite difficult to solder a 9-pin Teflon socket directly. The spacing are too tight between those pins. So I feel very insecure when assembling my preamp. I’m always afraid some of my wires could touch each other then produce a short.
Beside that, usually we forget to solder the pins for longer time than it should (due to some reason like the wire is not joined well or one of the pin is shorted with other pin, etc). The heat (when becomes overheated) definitely will change some metal structure on the pin (not a good idea for the insulator also, although real Teflon is quite durable with such over temperature condition). Definitely heat is not a good friend for us (that’s why we know such Cryogenic treatment). With this PCB, the soldering becomes an easy job to be done (you will know how desperate to solder those wires to the tube socket’s pin rather than to the PCB’s hole). We can avoid the risk of overheating by using this PCB. And off course, esthetically wise, this kind of PCB looks gorgeous
It’s ok if you are using $10 socket which you can always replace them anytime without feeling guilty to your wife (ups!). But how about $70 Yamamoto or a ‘slightly’ cheaper, Luciano socket?
After looking around, I find a solution from Yamamoto which I like the tube socket very much. Yamamoto has extension PCB which will enlarge the spacing between the pins. But it seems the spacing is not enough for a ‘greedy’ guy like me. So forgive me Shigeki (Yamamoto), I have to make my own this time. But surely for the socket, Yamamoto is my reference idol.
So here we come with custom made PCB specifically for this purpose.
Below you can see the final result. Left side is the bottom view, while right side is the top view. Note the tracing is on the bottom side. Two extra holes on the side will allow us to screw this PCB to another PCB or chassis.
Tags: 9pin, PCB, Teflon, Tube Socket, Yamamoto
Posted in Collectible Stuff, DIY Audio | Comments (10)