Power chord for SEX amp 3.0? (and other questions about SEX) [resolved]
- Thread starter slankoe
- Start date
Check to see if the 1000uF capacitor connected to terminals 11 and 12 has perhaps been installed backwards. Black stripe side should be connected to terminal 12. Also make sure white wire from the OT-2 output transformer terminal 10 has been properly connected to terminal strip terminal 11 and not some other terminal by accident.
Right channel still dead, left channel still... sounds fantastic.
Hey wait so get this. Not sure if this is normal. Not sure if anything is normal, but I unplugged the left RCA input channel from the source to the amp, and kept the right one plugged in. I heard very quiet sound coming in. As if the right channel was crossfeeding a bit into the left. Still zero sound on the right. Does this mean anything?
Hey wait so get this. Not sure if this is normal. Not sure if anything is normal, but I unplugged the left RCA input channel from the source to the amp, and kept the right one plugged in. I heard very quiet sound coming in. As if the right channel was crossfeeding a bit into the left. Still zero sound on the right. Does this mean anything?
It means that the signal is getting partway through the right side circuitry, enough to bleed into the left. Maybe try disconnecting the 1000uF cap at terminal 12 and see if that changes the voltage reading at terminal 10. Also, posting an image of the circuitry around that socket and strips might be helpful.
Terminals 3 and 17 are wired together at the cathode of the output triode of that 6FJ7. Getting 0V there means that either the tube isn't conducting or a part is loose/damaged and not permitting conduction.slankoe said:
Not passing your voltage checks means that your amp shouldn't be used. We will not respond to any commentary on what you do or don't hear from your headphones until you pass your voltage checks and the amplifier is safe to operate.slankoe said:
When you post your voltages, it should be a list of the terminal, the voltage you have, and the voltage you're supposed to have. Having 400V where you're supposed to have 385V is an issue, but you haven't actually told us at which terminals you have that issue.slankoe said:
Successfully installed C4S update, sounds good! Noticeable improvement in reduced noise (nearly silent background where there was a slight hiss at max volume with no music playing).
Thanks to all who assisted me during this build and thanks to Bottlehead for making such cool kits available. It was a really neat first build experience, despite the hiccups (simply caused by missing one step) ;D
Maybe someday I will make another order, 'till then I shall enjoy my lovely SEX AMP.
Thanks to all who assisted me during this build and thanks to Bottlehead for making such cool kits available. It was a really neat first build experience, despite the hiccups (simply caused by missing one step) ;D
Maybe someday I will make another order, 'till then I shall enjoy my lovely SEX AMP.
