Hi,
Just got myself a yaqin MC-10L tube amplifier and after some tinkering and replacement of dodgy cathode resistors it now sounds really good.
I have purchased some svetlana 6n1p preamp tubes to replace the chinese ones that come with it as I find they seem to go microphonic quite often and trying to find them to purchase is near impossible.
So I rebiased the EL34's and changed the 6n1's for the svetlana 6n1p but after about 30 seconds there is a terrrible hum through the speakers. There is no bias pot on the preamptubes and was wondering what I need to do to get the svetlanas to work.
Any help would be appreciated
Just got myself a yaqin MC-10L tube amplifier and after some tinkering and replacement of dodgy cathode resistors it now sounds really good.
I have purchased some svetlana 6n1p preamp tubes to replace the chinese ones that come with it as I find they seem to go microphonic quite often and trying to find them to purchase is near impossible.
So I rebiased the EL34's and changed the 6n1's for the svetlana 6n1p but after about 30 seconds there is a terrrible hum through the speakers. There is no bias pot on the preamptubes and was wondering what I need to do to get the svetlanas to work.
Any help would be appreciated
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.