PX25 to 300B pins - diyAudio
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Old 2nd December 2011, 06:32 PM   #1
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Default PX25 to 300B pins

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?

Click the image to open in full size.

Thanks!
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Old 2nd December 2011, 07:46 PM   #2
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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.
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Old 2nd December 2011, 08:45 PM   #3
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whats the problem are euro 5 pins not available ?

cheers
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Old 3rd December 2011, 12:03 AM   #4
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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.
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