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Discussion in 'Building the Classics' started by Exojam, Aug 4, 2018.
If can get to the point where I do not need more surgeries and get off the antibiotics I may make some real progress.
How does she look so far?
Well it is all put together. In some ways I am happy with how it came out but the MAJOR OCM in me will see a wire that is not perfect and it will bother me.
In the next few days it will go through it voltage checks without and than with the tubes. I will start it with JJ’s even though I just do not like them. Once I am satisfied with how that goes I will put my NOS tubes in. Not sure what will go in the preamp section but I have some (supposed to be) very nice Mullard matching power tubes.
2224EAF3-2A3A-40D7-9E71-4443A153644E by Exojam posted Jan 5, 2019 at 5:51 PM
898D2392-CB14-4A7F-9EEB-88F2786A3A70 by Exojam posted Jan 5, 2019 at 5:51 PM
625D59F4-5700-47F8-9BDD-AC279B4B3AED by Exojam posted Jan 5, 2019 at 5:51 PM
Built a little stand so I can my measurements with.
3C47BA96-A0BA-4B3A-B8B0-734EA448EBD9 by Exojam posted Jan 8, 2019 at 12:28 PM
The black wire that you used on top of the board, is that shielded?
Yes it is.
I think he is confused. It is insulated bus wire. It does not need (or appear to be shielded). The Metro/Valvestorm kit comes with correct bus wire and insulation. I would always encourage builders new to this type of build to do that and ideally use perf'd board to loop the correctly coloured wires through the holes to the turrets to help with trouble shooting if there are problems later.
Sorry for the wrong information.
I definitely wish I would have ran the wires all the way through the turrets when I wired it up.
Run them from the bottom to the top of the turret? On my last build I just wrapped them around the base of the turret. I see that Metro has you fold the end of the wire and insert it into the bottom, is that what you did?
For those black wires and two others I wrapped them around the turrets.
All other wires I installed as directed in the manual.
That build is very clean with the wires run from the bottom. I’m going to try that on my Metro 50 Plexi/2204 conversion project.
I have to give Neikeel a ton of credit for always being there to offer his help and constructive advice. He is one very intelligent person when it comes to amps.
Well I ran into a problem when I started on the voltage checks, the 3 amp fuse was blowing.
With the help of a few folks they noticed I wired the voltage regulator incorrectly. What a dumb as move on my part and as slow as go I am not sure how in the heck I pulled that one off but I did.
Anyway, just waiting for some more fuses and I will rewire the voltage regulator and see what I get.
Voltage regulator? Is that the bridge rectifier?
Oh yeah, I see the problem but I wouldn’t have noticed it without you saying it, the wiring to the rectifier was wrong.
Yeah I meant to say rectifier and not regulator.
I’m getting ready to do a Metro kit with that same rectifier, did you get yours all sorted out yet?
The rectifier is marked with ~ on two pins, +ve on another and -be on the fourth.
The kit uses single pole switches so the PT is hooked directly to the ~ terminals and the + to the standby switch which then goes to the mains cans and choke etc. The -ve has no connection on a 50w. I personally prefer to use two double pole switches for mains (to switch live and neutral synchronously) and to switch the ac from the PT to the diode block But the kit arrangement is ok.
I just got my fuses in yesterday so after a bit of cleaning of my van that was totaled (getting all the stereo stuff out) I will be able to rewire and test a bit today (hopefully).
And if you can do your kit like Neikeel mentions, I would. Unfortunately I reached out to him for help after I already purchased my parts.
This should work a lot better. While I was in there I redid some wiring I was not happy with.
I will fire her up after I run some errands.
I am also thinking I may just use the head with the little stand I made until I can make the proper one for it.
B4EA8FBF-D40B-48CA-8C61-D62EEC6CEE85 by Exojam posted Jan 18, 2019 at 12:37 PM
10BB552A-3540-44C1-87A9-3E1248D6AF11 by Exojam posted Jan 18, 2019 at 12:37 PM