50watt build. Langner style with PPIMV
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- metalhead3ecr
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50watt build. Langner style with PPIMV
This is my first build. I bought the chassis from triode...it is intended for a 100watt. I am trying to make a Curt Mitchell Langner amp with a PPIMV. Advice and comments are welcomed!
-Ed
-Ed
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Re: 50watt build. Langner style with PPIMV
Why did you leave the first preamp tubes heater wires untwisted? Otherwise looking good.
- metalhead3ecr
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Re: 50watt build. Langner style with PPIMV
Good Question! I actually do not know the math behind it...but if you go to Curt Mitchell's site, you can see that Langner left them untwisted on his amp too....so I just copied Langner's wiring. I don't know if it is done on purpose or just lazy
Here it is.
Here it is.
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Re: 50watt build. Langner style with PPIMV
Yeah I think you can get away with it but if you have hum issues when you finish it you better suspect those untwisted heaters. I'd twist them now when it still is easy. You've done great heaters, do the icing on the cake now.
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Re: 50watt build. Langner style with PPIMV
seems logical! I will twist them up this weekend. All that is left to do is hook up the power indicator, fuses, and power inlet, then connect the PTP board and bias the thing. Hopefully she will make some type of noise this weekend!
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Re: 50watt build. Langner style with PPIMV
One thing I just noticed is that you are going to put the ppimv to input jack hole. That won't work. It will oscillate, even if you use shielded wire. Put it to one of your speaker jack holes OR the indicator light hole.
Last edited by julkke on Thu Nov 15, 2012 1:16 pm, edited 1 time in total.
- metalhead3ecr
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Re: 50watt build. Langner style with PPIMV
Alright. I will try to find a better location for it! thanks
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Re: 50watt build. Langner style with PPIMV
Oh and also, twist your OT secondarys together (the wires going to the impedance switch).
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Re: 50watt build. Langner style with PPIMV
Yea I was wondering about that. Ok will do! Thanks
I will keep you updated on the build!
I will keep you updated on the build!