Hiya, have you lit the amp up yet? I am so curious to find out if you have listened to her yet?
Ah well back to the bench and a very csick Citation 15 tuner.
S
Ah well back to the bench and a very csick Citation 15 tuner.
S
Hi Shawn,
That's looking like a nice neat job. Way to go dude! (in the best possible way). 😉
-Chris
That's looking like a nice neat job. Way to go dude! (in the best possible way). 😉
-Chris
Raise your glass...
it works! 😀 It's alive and playing music. I dialed it up on the variac with a 1/2 amp fuse in it and started tweaking the potentiometers to adjust the bias settings, which I don't really have a guide for but I used the values on the schematic for reference.
It sounds fantastic. There is nothing wrong with the sound but I will not be able to give any true assessment until I listen to it in a proper set up. More on that later as I still have some serious measuring and adjustments to make.
Everything worked on the first try and I can't believe it! 🙂 I'm missing the ceramic OpAmp, the large filter caps and two decent volume controls. The heat shields that were made were too short but I will have new ones early this week. The front plate is waiting for me to find a small firm that will polish it and anodize it gold tint. The labels and decals will be replaced as well.
DC300A Revisited:
it works! 😀 It's alive and playing music. I dialed it up on the variac with a 1/2 amp fuse in it and started tweaking the potentiometers to adjust the bias settings, which I don't really have a guide for but I used the values on the schematic for reference.
It sounds fantastic. There is nothing wrong with the sound but I will not be able to give any true assessment until I listen to it in a proper set up. More on that later as I still have some serious measuring and adjustments to make.
Everything worked on the first try and I can't believe it! 🙂 I'm missing the ceramic OpAmp, the large filter caps and two decent volume controls. The heat shields that were made were too short but I will have new ones early this week. The front plate is waiting for me to find a small firm that will polish it and anodize it gold tint. The labels and decals will be replaced as well.
DC300A Revisited:
Attachments
I'm gonna vote you DIY'er of the year. Unbelievable (again). Well done.
Raise my glass....for sure...where's that bottle opener....
Cheers
Q
Raise my glass....for sure...where's that bottle opener....
Cheers
Q
WELL DONE Shawn! I think these old Crowns sound remarkable too!
Now if I could only get the notes I have taken from this thread I will try to completely rebuild a couple of my old Mark one DC 300 a's!!!!!
Dont forget to swithch your dvm off!
S
Now if I could only get the notes I have taken from this thread I will try to completely rebuild a couple of my old Mark one DC 300 a's!!!!!
Dont forget to swithch your dvm off!
S
Hey Shawn, how about another pic. One from 73.2619 deg from perpendicular would be great .....
LOL
Q
LOL
Q
quasi said:
I have back ups if you so require? 😉
stewartwen said:
I have to build a web page (ugh) to document this gig. It is a special job and I would like more people to see it. DVM, is now off, thanks for pointing that out. 🙂
rdf said:
The Beast it back for another 30 years plus!!! I am very happy I am able to share this wacky project with you all. I guess this too is by a fanatic for the fanatics ! Who else would do these things? 😀
Thank You,
Shawn.
