Tube DIY Asylum

RE: What is it that you are not exactly getting?

40.136.248.102

vinnie2

A

In Reply to: RE: What is it that you are not exactly getting? posted by elblanco on October 22, 2016 at 18:44:15

Not quite. The problem that started all this was a small buzz I was hearing that I wanted to eliminate. Putting in a grid stop on the input tube helped a lot, but some is still there. I was pretty sure it is due to the bread board wiring being a bit of a rats nest, so I decided to not worry about it for the moment. By that time however the 'scope thread had taken on a life of it's own. That's ok though, because I do want to learn how to make better use of it, and some of the suggestions for videos I am getting could help with that. I hope so.

Follow Ups:

Make sure your using shielded internal wiring ... - Cougar 19:24:09 10/22/16 (4)
For all the input connectors. From that pic you posted those are just at the length of being too long and maybe picking garbage from within the amp. Just one more thing in the process of elimination. 🙂
- RE: Make sure your using shielded internal wiring ... - vinnie2 03:40:11 10/23/16 (3)
  I noticed less buzz after I moved a few wires around that I guessed were likely trouble makers, so I think when I get it built proper like it will clear up. Just to be sure, what are saying is maybe too long, the rca interconnects to the amp?
  - The picture you posted when I had asked... - Cougar 08:05:47 10/23/16 (2)
    In one of your post about this same problem a few weeks back. Is that the same project you are having issues with and this thread is about? If so, then those wires that are coming from all those input connectors maybe too long without shielding. If the wires were shorter like 1-2 inches long shouldn't be an issue.
    - RE: The picture you posted when I had asked... - vinnie2 09:56:03 10/23/16 (1)
      That was the 845 amp, this one is an 813 and I re-did the wiring somewhat. I have done bread boards lots of times and got away with wiring like that, but my luck may have run out. Not worried right now though as I think it will disappear when I do a final build and I have it low enough that I can listen to the amp at least.
      Got through the first video awhile ago finally, and I think they will help. Thanks!
      
      Edits: 10/23/16
      - Glad to hear they are helping you. - Cougar 10:41:19 10/23/16 (0)
        
        In Reply to: RE: The picture you posted when I had asked... posted by vinnie2 on October 23, 2016 at 09:56:03
        
        It's hard to grab the concept without seeing how it's actually done. He even discusses how some signals that look good to the untrained eye, actually are showing issues. This should go a long way to help you out.
        
        You should try doing what he is doing in those video. The one about charging a cap and viewing it as it's charging is a good one.
        
        Have fun with the videos!

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