Bottlehead Forum

Bottlehead Kits => Moreplay => Topic started by: patrick620 on December 29, 2020, 03:08:51 PM

Title: 1n4007 sub
Post by: patrick620 on December 29, 2020, 03:08:51 PM

In a previous GE integrated amp restoration my customer wanted me to sub the 1N4007 diodes with FR307 "fast recovery" diodes. I still have a few on hand. My question is, does it really matter on this new build?

Title: Re: 1n4007 sub
Post by: Paul Birkeland on December 29, 2020, 03:14:44 PM

The UF4007 diodes we supply are a bit of an improvement over normal/fast diodes.  UF is "ultra-fast".  Does it matter?  I suspect not so much! To impress your customer, you could recommend the UF4007 in place of the FR307 though.  Whenever I see an old tube amp with SS high voltage diodes, I always replace them with UF4007s.

Title: Re: 1n4007 sub
Post by: patrick620 on December 29, 2020, 03:24:25 PM

Just took another look at the parts list. They are UF. My bad. In that old GE resto I actually replaced the old Selenium rectifier with FR307. Upgrade either way at the time ;) I really like this forum and am really looking forward to getting into this build. Thank you for the response.