Tube-Town Forum
Technik => Tech-Talk TT-Projekte => Thema gestartet von: dani_s am 3.02.2019 21:36
-
Hi,
finished my second projected: the TT Tube Reverb with the upgrade PCB.
Assembly was straight forward, I get all the measurements to spot on.
The sound is great! I drive it before a 3W G3 MadAmp, which is a quite clean amp.
To be 100% happy I am asking for some advice to reduce the rest of hum and noise I have:
If the mix is all the way on bypass there is only a bit of noise added to the dry signal, not sure if it should be super clean.
If I mix in reverb signal I get a bit of both signal noise and a fixed 50hz-ish noise too.
It is not hearable on small mix settings, but if the mix is quite large it is quite obvious.
The noise gets affected by the tone setting a lot.
Attached are a few pictures of my assembly. Hopefully, I just forgot something super obvious, or I made a stupid mistake somewhere (I am quite new to this).
Thanks for your feedback
D
-
Hey,
You can try to rewire the heatersupply. I am not sure if that is leading to your issue but your heater wiring is not considered to be optimal by a lot of people.
Read this and follow the instructions at the end: http://www.valvewizard.co.uk/heater.html
As well I would rewire the pots. Make shorter leads and do not twist them.
Cheers,
Simon
-
Hi,
looking at the last picture one might assume that the reverb tank is picking up some noise. Have you tried relocating it away from the power supply and/or transformer?
Good luck!
Sebastian