Showing posts with label set. Show all posts
Showing posts with label set. Show all posts

Monday, June 29, 2020

DIY SET TUBE AMP Triode Wired 1625 Part 1

 This lil project has had a couple false starts but now I finally got just about all holes drilled and everything screwed down. Now for the easy part wiring it all up... This lil guy features two RCA 816's, two 1625 tubes wired for triode, and two 6J5GT's. This guy is really heavy but should be good for maybe 2wpc?
 Meeters are the wrong scale gotta X10 8-)


Sunday, February 1, 2015

My 1st DIY SET AMP 2A3/45 Part 1

It's ALIVE!!!!! Welll.. Sort of....

 I've always wanted to build my own tube amp so when I was in New York in May hanging with Jeffrey and Dave they sent me home with a schematic and enough parts to get started on a Stereo 45/2A3 amp. I have been moving toward this project at a glacial pace. I had a bit of help from my friend Chris on layout and the use of his drill press. Metal is so so messy..... 
  
 I like the looks even if it isn't perfectly symmetrical. That makes me abit crazy... loll

 So how did it go? 
Well after my friend Chris went over my work yesterday he only found one issue with a wrong resistor rating which he happened to have so he dropped them by for me today. I completed my homework and plugged it in and turned it on.
CLICK
Some hum.... Only one channel working.... Sound is coming out.
But no smoke no burning no smoke 8-)
 I wasn't going to post until it was working perfectly but that wouldn't be very honest or fun. We learn the most from mistakes anyway.
Stay tuned for part 2. 

EDIT Part 1.34
It turns out parts like LED's have polarity and if one is reversed it does not work. Now I have both channels working and the amp is stable. However it just sounds terrible. Tomorrow I'll dive in to take measurements to see what else I have done wrong and buggered up.