Search found 4 matches
- Tue Jun 20, 2023 5:13 am
- Forum: Solid State
- Topic: DIY Transistor Amp Using NVA Boards
- Replies: 435
- Views: 186384
Re: DIY Transistor Amp Using NVA Boards
Never thought you could manage to squeeze in 3 sets of PSU into that chassis, but they look really good. Would you consider putting in RC filter at the end of the power rails for the 2 smaller PSUs? I'm still wondering if the input coupling caps are necessary especially when you have the source in t...
- Wed Jun 14, 2023 1:56 am
- Forum: Solid State
- Topic: DIY Transistor Amp Using NVA Boards
- Replies: 435
- Views: 186384
Re: DIY Transistor Amp Using NVA Boards
Hello Cressy, Quite a bit of change this time. I'm a bit surprise that you have reduced the value of the capacitors on the feedback and added the input coupling caps. I read somewhere (can't find it now :oops: ) recommending increasing the feedback cap value to ~100uF, and also I thought this amp wo...
- Thu Jun 01, 2023 8:21 am
- Forum: Solid State
- Topic: DIY Transistor Amp Using NVA Boards
- Replies: 435
- Views: 186384
Re: DIY Transistor Amp Using NVA Boards
Thanks, good to know that my old amp's quiescent current is not abnormal
The RFb on my boards are the original, 18kR. I will try to parallel another 18k to see how it turn out.
The RFb on my boards are the original, 18kR. I will try to parallel another 18k to see how it turn out.
- Wed May 31, 2023 8:15 am
- Forum: Solid State
- Topic: DIY Transistor Amp Using NVA Boards
- Replies: 435
- Views: 186384
Re: DIY Transistor Amp Using NVA Boards
Hello, Looking at Post#364 and #365, I see you now have a RC after the main cap bank. If I read the TNTAudio article correctly (https://www.tnt-audio.com/clinica/ssps3_e.html) these are best implemented near to the board since it is supposed to take away any remaining inductance on the power rail. F...