PX25 to 300B pins

marvchen · 2nd December 2011, 06:32 PM

Making a PX25 to 300B adapter from parts I got from Ebay. Basically a PX25 socket into a 300Bcup with pins at the bottom.

Can someone confirm that the anode and the grid aren't reversed?

Thanks!

HollowState · 2nd December 2011, 07:46 PM

By direct examination of a WE 300B I can confirm that the connections are correct as pictured looking at he base bottom. I have no experience with the PX25.

v4lve lover · 2nd December 2011, 08:45 PM

whats the problem are euro 5 pins not available ?

cheers

marvchen · 3rd December 2011, 12:03 AM

Thank you, the PX25 is less of a question because of its pin out, just wanted to confirm 300B pins.

Just would like to keep these fancy 4 pins teflon sockets on the amp, and make an adapter instead. Want to be able to switch between the 300Bs and some ancient PX4s - and don't want to install combo sockets.

2nd December 2011, 07:46 PM	#2
HollowState diyAudio Member Join Date: Aug 2006 Location: Taxland, New Jersey	By direct examination of a WE 300B I can confirm that the connections are correct as pictured looking at he base bottom. I have no experience with the PX25. __________________ "The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University

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2nd December 2011, 08:45 PM	#3
v4lve lover diyAudio Member Join Date: Aug 2010	whats the problem are euro 5 pins not available ? cheers

3rd December 2011, 12:03 AM	#4
marvchen diyAudio Member Join Date: May 2005 Location: la la la	Thank you, the PX25 is less of a question because of its pin out, just wanted to confirm 300B pins. Just would like to keep these fancy 4 pins teflon sockets on the amp, and make an adapter instead. Want to be able to switch between the 300Bs and some ancient PX4s - and don't want to install combo sockets.